DIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONS
Note. Refer to the applicable service information to diagnose the body and chassis DTCs.
DTC INDEX
| DTC | Description |
|---|---|
| DTC P0010 | INTAKE CAMSHAFT POSITION ACTUATOR CIRCUIT/OPEN (BANK 1) |
| DTC P0011 | INTAKE CAMSHAFT POSITION TIMING - OVER-ADVANCED (BANK 1) |
| DTC P0012 | INTAKE CAMSHAFT POSITION TIMING - OVER-RETARDED (BANK 1) |
| DTC P0016 | CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION - BANK 1 SENSOR A |
| DTC P0018 | CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION - BANK 2 SENSOR A |
| DTC P0020 | INTAKE CAMSHAFT POSITION ACTUATOR CIRCUIT/OPEN (BANK 2) |
| DTC P0021 | INTAKE CAMSHAFT POSITION TIMING - OVER-ADVANCED (BANK 2) |
| DTC P0022 | INTAKE CAMSHAFT POSITION TIMING - OVER-RETARDED (BANK 2) |
| DTC P0040 | OXYGEN SENSOR SIGNALS SWAPPED BANK 1 SENSOR 1/BANK 2 SENSOR 1 |
| DTC P0041 | OXYGEN SENSOR SIGNALS SWAPPED BANK 1 SENSOR 2/BANK 2 SENSOR 2 |
| DTC P0053 | HO2S HEATER RESISTANCE (BANK 1, SENSOR 1) |
| DTC P0054 | HO2S HEATER RESISTANCE (BANK 1, SENSOR 2) |
| DTC P0055 | HO2S HEATER RESISTANCE (BANK 1, SENSOR 3) |
| DTC P0059 | HO2S HEATER RESISTANCE (BANK 2, SENSOR 1) |
| DTC P0060 | HO2S HEATER RESISTANCE (BANK 2, SENSOR 2) |
| DTC P0068 | MANIFOLD ABSOLUTE PRESSURE (MAP)/MASS AIR FLOW (MAF) - THROTTLE POSITION CORRELATION |
| DTC P0102 | MASS OR VOLUME AIR FLOW A CIRCUIT LOW |
| DTC P0103 | MASS OR VOLUME AIR FLOW A CIRCUIT HIGH |
| DTC P0104 | MASS OR VOLUME AIR FLOW A CIRCUIT INTERMITTENT/ERRATIC |
| DTC P0106 | MANIFOLD ABSOLUTE PRESSURE (MAP/BARO) SENSOR RANGE/PERFORMANCE |
| DTC P0107 | MANIFOLD ABSOLUTE PRESSURE (MAP)/BAROMETRIC PRESSURE (BARO) SENSOR LOW |
| DTC P0108 | MANIFOLD ABSOLUTE PRESSURE (MAP)/BAROMETRIC PRESSURE (BARO) SENSOR HIGH |
| DTC P0109 | MANIFOLD ABSOLUTE PRESSURE (MAP)/BAROMETRIC PRESSURE (BARO) SENSOR INTERMITTENT |
| DTC P0112 | INTAKE AIR TEMPERATURE (IAT) SENSOR 1 CIRCUIT LOW |
| DTC P0113 | INTAKE AIR TEMPERATURE (IAT) SENSOR 1 CIRCUIT HIGH |
| DTC P0114 | INTAKE AIR TEMPERATURE (IAT) SENSOR 1 INTERMITTENT/ERRATIC |
| DTC P0116 | ENGINE COOLANT TEMPERATURE (ECT) SENSOR 1 CIRCUIT RANGE/PERFORMANCE |
| DTC P0117 | ENGINE COOLANT TEMPERATURE (ECT) SENSOR 1 CIRCUIT LOW |
| DTC P0118 | ENGINE COOLANT TEMPERATURE (ECT) SENSOR 1 CIRCUIT HIGH |
| DTC P0119 | ENGINE COOLANT TEMPERATURE (ECT) SENSOR 1 CIRCUIT INTERMITTENT/ERRATIC |
| DTC P0121 | THROTTLE/PEDAL POSITION SENSOR A CIRCUIT RANGE/PERFORMANCE |
| DTC P0122 | THROTTLE/PEDAL POSITION SENSOR A CIRCUIT LOW |
| DTC P0123 | THROTTLE/PEDAL POSITION SENSOR A CIRCUIT HIGH |
| DTC P0125 | INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROL |
| DTC P0127 | INTAKE AIR TEMPERATURE (IAT) TOO HIGH |
| DTC P0128 | COOLANT THERMOSTAT (COOLANT TEMPERATURE BELOW THERMOSTAT REGULATING TEMPERATURE) |
| DTC P0132 | O2 CIRCUIT HIGH VOLTAGE (BANK 1, SENSOR 1) |
| DTC P0133 | O2 CIRCUIT SLOW RESPONSE (BANK 1, SENSOR 1) |
| DTC P0135 | O2 HEATER CIRCUIT (BANK 1, SENSOR 1) |
| DTC P0138 | O2 CIRCUIT HIGH VOLTAGE (BANK 1, SENSOR 2) |
| DTC P0141 | O2 HEATER CIRCUIT (BANK 1, SENSOR 2) |
| DTC P0144 | O2 CIRCUIT HIGH VOLTAGE (BANK 1, SENSOR 3) |
| DTC P0147 | O2 HEATER CIRCUIT (BANK 1, SENSOR 3) |
| DTC P0148 | FUEL DELIVERY ERROR |
| DTC P0152 | O2 CIRCUIT HIGH VOLTAGE (BANK 2, SENSOR 1) |
| DTC P0153 | O2 CIRCUIT SLOW RESPONSE (BANK 2, SENSOR 1) |
| DTC P0155 | O2 HEATER CIRCUIT (BANK 2, SENSOR 1) |
| DTC P0158 | O2 CIRCUIT HIGH VOLTAGE (BANK 2, SENSOR 2) |
| DTC P0161 | O2 HEATER CIRCUIT (BANK 2, SENSOR 2) |
| DTC P0171 | SYSTEM TOO LEAN (BANK 1) |
| DTC P0172 | SYSTEM TOO RICH (BANK 1) |
| DTC P0174 | SYSTEM TOO LEAN (BANK 2) |
| DTC P0175 | SYSTEM TOO RICH (BANK 2) |
| DTC P0180 | FUEL TEMPERATURE SENSOR A CIRCUIT |
| DTC P0181 | FUEL TEMPERATURE SENSOR A CIRCUIT RANGE/PERFORMANCE |
| DTC P0182 | FUEL TEMPERATURE SENSOR A CIRCUIT LOW |
| DTC P0183 | FUEL TEMPERATURE SENSOR A CIRCUIT HIGH |
| DTC P0190 | FUEL RAIL PRESSURE SENSOR A CIRCUIT |
| DTC P0191 | FUEL RAIL PRESSURE SENSOR A CIRCUIT RANGE/PERFORMANCE |
| DTC P0192 | FUEL RAIL PRESSURE SENSOR A CIRCUIT LOW |
| DTC P0193 | FUEL RAIL PRESSURE SENSOR A CIRCUIT HIGH |
| DTC P0196 | ENGINE OIL TEMPERATURE (EOT) SENSOR CIRCUIT RANGE/PERFORMANCE |
| DTC P0197 | ENGINE OIL TEMPERATURE (EOT) SENSOR CIRCUIT LOW |
| DTC P0198 | ENGINE OIL TEMPERATURE (EOT) SENSOR CIRCUIT HIGH |
| DTC P020X | INJECTOR CIRCUIT/OPEN - CYLINDER X |
| DTC P0210 | INJECTOR CIRCUIT/OPEN - CYLINDER 10 |
| DTC P0217 | ENGINE COOLANT OVER-TEMPERATURE CONDITION |
| DTC P0218 | TRANSMISSION FLUID TEMPERATURE OVER-TEMPERATURE CONDITION |
| DTC P0219 | ENGINE OVER SPEED CONDITION |
| DTC P0221 | THROTTLE/PEDAL POSITION SENSOR/SWITCH B CIRCUIT RANGE/PERFORMANCE |
| DTC P0222 | THROTTLE/PEDAL POSITION SENSOR/SWITCH B CIRCUIT LOW |
| DTC P0223 | THROTTLE/PEDAL POSITION SENSOR/SWITCH B CIRCUIT HIGH |
| DTC P0230 | FUEL PUMP PRIMARY CIRCUIT |
| DTC P0231 | FUEL PUMP SECONDARY CIRCUIT LOW |
| DTC P0232 | FUEL PUMP SECONDARY CIRCUIT HIGH |
| DTC P0234 | TURBOCHARGER/SUPERCHARGER A OVERBOOST CONDITION |
| DTC P0243 | TURBOCHARGER/SUPERCHARGER WASTEGATE SOLENOID A |
| DTC P0261 | CYLINDER 1 INJECTOR CIRCUIT LOW |
| DTC P0262 | CYLINDER 1 INJECTOR CIRCUIT HIGH |
| DTC P0264 | CYLINDER 2 INJECTOR CIRCUIT LOW |
| DTC P0265 | CYLINDER 2 INJECTOR CIRCUIT HIGH |
| DTC P0267 | CYLINDER 3 INJECTOR CIRCUIT LOW |
| DTC P0268 | CYLINDER 3 INJECTOR CIRCUIT HIGH |
| DTC P0270 | CYLINDER 4 INJECTOR CIRCUIT LOW |
| DTC P0271 | CYLINDER 4 INJECTOR CIRCUIT HIGH |
| DTC P0273 | CYLINDER 5 INJECTOR CIRCUIT LOW |
| DTC P0274 | CYLINDER 5 INJECTOR CIRCUIT HIGH |
| DTC P0276 | CYLINDER 6 INJECTOR CIRCUIT LOW |
| DTC P0277 | CYLINDER 6 INJECTOR CIRCUIT HIGH |
| DTC P0279 | CYLINDER 7 INJECTOR CIRCUIT LOW |
| DTC P0280 | CYLINDER 7 INJECTOR CIRCUIT HIGH |
| DTC P0282 | CYLINDER 8 INJECTOR CIRCUIT LOW |
| DTC P0283 | CYLINDER 8 INJECTOR CIRCUIT HIGH |
| DTC P0297 | VEHICLE OVER SPEED CONDITION |
| DTC P0298 | ENGINE OIL OVER TEMPERATURE CONDITION |
| DTC P0300 | RANDOM MISFIRE DETECTED |
| DTC P0301 - P0309 | CYLINDER X MISFIRE DETECTED |
| DTC P0310 | CYLINDER 10 MISFIRE DETECTED |
| DTC P0315 | CRANKSHAFT POSITION SYSTEM VARIATION NOT LEARNED |
| DTC P0316 | MISFIRE DETECTED ON STARTUP (FIRST 1000 REVOLUTIONS) |
| DTC P0320 | IGNITION/DISTRIBUTOR ENGINE SPEED INPUT CIRCUIT |
| DTC P0325 | KNOCK SENSOR 1 CIRCUIT (BANK 1) |
| DTC P0326 | KNOCK SENSOR 1 CIRCUIT RANGE/PERFORMANCE (BANK 1) |
| DTC P0330 | KNOCK SENSOR 2 CIRCUIT (BANK 2) |
| DTC P0331 | KNOCK SENSOR 2 CIRCUIT RANGE/PERFORMANCE (BANK 2) |
| DTC P0340 | CAMSHAFT POSITION SENSOR A CIRCUIT (BANK 1 OR SINGLE SENSOR) |
| DTC P0344 | CAMSHAFT POSITION SENSOR A CIRCUIT INTERMITTENT (BANK 1 OR SINGLE SENSOR) |
| DTC P0345 | CAMSHAFT POSITION SENSOR A CIRCUIT (BANK 2) |
| DTC P0349 | CAMSHAFT POSITION SENSOR A CIRCUIT INTERMITTENT (BANK 2) |
| DTC P0350 | IGNITION COIL PRIMARY/SECONDARY CIRCUIT |
| DTC P0351 | IGNITION COIL A PRIMARY/SECONDARY CIRCUIT |
| DTC P0352 | IGNITION COIL B PRIMARY/SECONDARY CIRCUIT |
| DTC P0353 | IGNITION COIL C PRIMARY/SECONDARY CIRCUIT |
| DTC P0354 | IGNITION COIL D PRIMARY/SECONDARY CIRCUIT |
| DTC P0355 | IGNITION COIL E PRIMARY/SECONDARY CIRCUIT |
| DTC P0356 | IGNITION COIL F PRIMARY/SECONDARY CIRCUIT |
| DTC P0357 | IGNITION COIL G PRIMARY/SECONDARY CIRCUIT |
| DTC P0358 | IGNITION COIL H PRIMARY/SECONDARY CIRCUIT |
| DTC P0359 | IGNITION COIL I PRIMARY/SECONDARY CIRCUIT |
| DTC P0360 | IGNITION COIL J PRIMARY/SECONDARY CIRCUIT |
| DTC P0400 | EXHAUST GAS RECIRCULATION (EGR) FLOW |
| DTC P0401 | EXHAUST GAS RECIRCULATION (EGR) FLOW INSUFFICIENT DETECTED |
| DTC P0402 | EXHAUST GAS RECIRCULATION (EGR) FLOW EXCESSIVE DETECTED |
| DTC P0403 | EXHAUST GAS RECIRCULATION (EGR) CONTROL CIRCUIT |
| DTC P0405 | EXHAUST GAS RECIRCULATION (EGR) SENSOR A CIRCUIT LOW |
| DTC P0406 | EXHAUST GAS RECIRCULATION (EGR) SENSOR A CIRCUIT HIGH |
| DTC P0410 | SECONDARY AIR INJECTION (AIR) SYSTEM |
| DTC P0412 | SECONDARY AIR INJECTION (AIR) SYSTEM - SWITCHING VALVE A CIRCUIT |
| DTC P0420 | CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD (BANK 1) |
| DTC P0430 | CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD (BANK 2) |
| DTC P0442 | EVAPORATIVE EMISSION SYSTEM LEAK DETECTED (SMALL LEAK) |
| DTC P0443 | EVAPORATIVE EMISSION SYSTEM PURGE CONTROL VALVE CIRCUIT |
| DTC P0446 | EVAPORATIVE EMISSION SYSTEM VENT CONTROL CIRCUIT |
| DTC P0451 | EVAPORATIVE EMISSION SYSTEM PRESSURE SENSOR/SWITCH RANGE/PERFORMANCE |
| DTC P0452 | EVAPORATIVE EMISSION SYSTEM PRESSURE SENSOR/SWITCH LOW |
| DTC P0453 | EVAPORATIVE EMISSION SYSTEM PRESSURE SENSOR/SWITCH HIGH |
| DTC P0454 | EVAPORATIVE EMISSION SYSTEM PRESSURE SENSOR/SWITCH INTERMITTENT |
| DTC P0455 | EVAPORATIVE EMISSION SYSTEM LEAK DETECTED (GROSS LEAK/NO FLOW) |
| DTC P0456 | EVAPORATIVE EMISSION SYSTEM LEAK DETECTED (VERY SMALL LEAK) |
| DTC P0457 | EVAPORATIVE EMISSION SYSTEM LEAK DETECTED (FUEL CAP LOOSE/OFF) |
| DTC P0460 | FUEL LEVEL SENSOR A CIRCUIT |
| DTC P0461 | FUEL LEVEL SENSOR A CIRCUIT RANGE/PERFORMANCE |
| DTC P0462 | FUEL LEVEL SENSOR A CIRCUIT LOW |
| DTC P0463 | FUEL LEVEL SENSOR A CIRCUIT HIGH |
| DTC P0480 | FAN 1 CONTROL CIRCUIT |
| DTC P0481 | HIGH FAN CONTROL (HFC)/FAN CONTROL 3 (FC3) PRIMARY CIRCUIT MALFUNCTION |
| DTC P0482 | MEDIUM FAN CONTROL (MFC)/ FAN CONTROL 2 (FC2) PRIMARY CIRCUIT FAILURE |
| DTC P0483 | VARIABLE FAN CONTROL (FC V) FAN PERFORMANCE |
| DTC P0491 | SECONDARY AIR INJECTION (AIR) SYSTEM INSUFFICIENT FLOW (BANK 1) |
| DTC P0500 | VEHICLE SPEED SENSOR (VSS) A |
| DTC P0503 | VEHICLE SPEED SENSOR (VSS) A INTERMITTENT/ERRATIC/HIGH |
| DTC P0505 | IDLE AIR CONTROL (IAC) SYSTEM |
| DTC P0506 | IDLE AIR CONTROL (IAC) SYSTEM RPM LOWER THAN EXPECTED |
| DTC P0507 | IDLE AIR CONTROL (IAC) SYSTEM RPM HIGHER THAN EXPECTED |
| DTC P050A | COLD START IDLE AIR CONTROL PERFORMANCE |
| DTC P050B | COLD START IGNITION TIMING PERFORMANCE |
| DTC P0511 | IDLE AIR CONTROL (IAC) CIRCUIT |
| DTC P0528 | FAN SPEED SENSOR CIRCUIT NO SIGNAL |
| DTC P0532 | AIR CONDITIONING PRESSURE (ACP) SENSOR LOW VOLTAGE DETECTED |
| DTC P0533 | AIR CONDITIONING PRESSURE (ACP) SENSOR HIGH VOLTAGE DETECTED |
| DTC P0534 | LOW A/C CYCLING PERIOD |
| DTC P0537 | A/C EVAPORATOR TEMPERATURE (ACET) CIRCUIT LOW INPUT |
| DTC P0538 | A/C EVAPORATOR TEMPERATURE (ACET) CIRCUIT HIGH INPUT |
| DTC P0552 | POWER STEERING PRESSURE (PSP) SENSOR/SWITCH CIRCUIT LOW |
| DTC P0553 | POWER STEERING PRESSURE (PSP) SENSOR CIRCUIT HIGH INPUT |
| DTC P0579 | CRUISE CONTROL MULTIFUNCTION INPUT A CIRCUIT RANGE / PERFORMANCE |
| DTC P0581 | CRUISE CONTROL MULTIFUNCTION INPUT A CIRCUIT HIGH |
| DTC P0600 | SERIAL COMMUNICATION LINK |
| DTC P0602 | POWERTRAIN CONTROL MODULE (PCM) PROGRAMMING ERROR |
| DTC P0603 | INTERNAL CONTROL MODULE KEEP ALIVE MEMORY (KAM) ERROR |
| DTC P0604 | INTERNAL CONTROL MODULE RANDOM ACCESS MEMORY (RAM) ERROR |
| DTC P0605 | INTERNAL CONTROL MODULE READ ONLY MEMORY (ROM) ERROR |
| DTC P0606 | POWERTRAIN CONTROL MODULE (PCM) PROCESSOR |
| DTC P0607 | CONTROL MODULE PERFORMANCE |
| DTC P060A | INTERNAL CONTROL MODULE MONITORING PROCESSOR PERFORMANCE |
| DTC P060B | INTERNAL CONTROL MODULE A/D PROCESSING PERFORMANCE |
| DTC P060C | INTERNAL CONTROL MODULE MAIN PROCESSOR PERFORMANCE |
| DTC P0611 | FUEL INJECTOR CONTROL MODULE PERFORMANCE |
| DTC P061B | INTERNAL CONTROL MODULE TORQUE CALCULATION PERFORMANCE |
| DTC P061C | INTERNAL CONTROL MODULE ENGINE RPM PERFORMANCE |
| DTC P061D | INTERNAL CONTROL MODULE ENGINE AIR MASS PERFORMANCE |
| DTC P061F | INTERNAL CONTROL MODULE THROTTLE ACTUATOR CONTROLLER PERFORMANCE |
| DTC P0620 | GENERATOR CONTROL CIRCUIT |
| DTC P0622 | GENERATOR FIELD TERMINAL CIRCUIT |
| DTC P0625 | GENERATOR FIELD TERMINAL CIRCUIT LOW |
| DTC P0626 | GENERATOR FIELD TERMINAL CIRCUIT HIGH |
| DTC P062C | INTERNAL CONTROL MODULE VEHICLE SPEED PERFORMANCE |
| DTC P0645 | AIR CONDITIONING CLUTCH RELAY (A/CCR) PRIMARY CIRCUIT MALFUNCTION |
| DTC P0657 | ACTUATOR SUPPLY VOLTAGE A CIRCUIT/OPEN |
| DTC P0660 | INTAKE MANIFOLD TUNING VALVE (IMTV) CONTROL CIRCUIT OPEN - BANK 1 |
| DTC P0685 | ELECTRONIC CONTROL MODULE (ECM)/POWERTRAIN CONTROL MODULE (PCM) POWER RELAY CONTROL CIRCUIT/OPEN |
| DTC P0689 | ELECTRONIC CONTROL MODULE (ECM)/POWERTRAIN CONTROL MODULE (PCM) POWER RELAY SENSE CIRCUIT LOW |
| DTC P0690 | ELECTRONIC CONTROL MODULE (ECM)/POWERTRAIN CONTROL MODULE (PCM) POWER RELAY SENSE CIRCUIT HIGH |
| DTC P0703 | BRAKE SWITCH B INPUT CIRCUIT |
| DTC P0704 | CLUTCH PEDAL POSITION (CPP) SWITCH MALFUNCTION |
| DTC P0705 | TRANSMISSION RANGE SENSOR A CIRCUIT (PRNDL) INPUT |
| DTC P0707 | TRANSMISSION RANGE SENSOR A CIRCUIT LOW |
| DTC P0708 | TRANSMISSION RANGE SENSOR A CIRCUIT HIGH |
| DTC P071X | TRANSMISSION CODE |
| DTC P0720 | OUTPUT SHAFT SPEED (OSS) SENSOR CIRCUIT |
| DTC P0721 | OUTPUT SHAFT SPEED (OSS) SENSOR CIRCUIT RANGE/PERFORMANCE |
| DTC P0722 | OUTPUT SHAFT SPEED (OSS) SENSOR CIRCUIT NO SIGNAL |
| DTC P0723 | OUTPUT SHAFT SPEED (OSS) SENSOR CIRCUIT INTERMITTENT |
| DTC P073X | TRANSMISSION CODE |
| DTC P074X | TRANSMISSION CODE |
| DTC P075X | TRANSMISSION CODE |
| DTC P076X | TRANSMISSION CODE |
| DTC P077X | TRANSMISSION CODE |
| DTC P078X | TRANSMISSION CODE |
| DTC P079X | TRANSMISSION CODE |
| DTC P0815 | UPSHIFT SWITCH CIRCUIT |
| DTC P0830 | CLUTCH PEDAL SWITCH A CIRCUIT |
| DTC P0833 | CLUTCH PEDAL SWITCH B CIRCUIT |
| DTC P0840 | TRANSMISSION FLUID PRESSURE SENSOR/SWITCH A CIRCUIT |
| DTC P09XX | TRANSMISSION CODE |
| DTC P1000 | ON-BOARD DIAGNOSTIC (OBD) SYSTEMS READINESS TEST NOT COMPLETE |
| DTC P1001 | KEY ON ENGINE RUNNING (KOER) NOT ABLE TO COMPLETE, KOER ABORTED |
| DTC P1100 | MASS AIR FLOW (MAF) SENSOR CIRCUIT INTERMITTENT |
| DTC P1101 | MASS AIR FLOW (MAF) SENSOR OUT OF SELF-TEST RANGE |
| DTC P1112 | INTAKE AIR TEMPERATURE (IAT) CIRCUIT INTERMITTENT |
| DTC P1114 | INTAKE AIR TEMPERATURE 2 (IAT2) CIRCUIT LOW (SUPERCHARGED/TURBOCHARGED ENGINES) |
| DTC P1115 | INTAKE AIR TEMPERATURE 2 (IAT2) CIRCUIT HIGH (SUPERCHARGED/TURBOCHARGED ENGINES) |
| DTC P1116 | ENGINE COOLANT TEMPERATURE (ECT) SENSOR OUT OF SELF-TEST RANGE |
| DTC P1117 | ENGINE COOLANT TEMPERATURE (ECT) SENSOR CIRCUIT INTERMITTENT |
| DTC P1120 | THROTTLE POSITION SENSOR A OUT OF RANGE LOW (RATCH TOO LOW) |
| DTC P1124 | THROTTLE POSITION SENSOR A OUT OF SELF-TEST RANGE |
| DTC P1125 | THROTTLE POSITION SENSOR A INTERMITTENT |
| DTC P1127 | EXHAUST TEMPERATURE OUT OF RANGE, O2 SENSOR TESTS NOT COMPLETED |
| DTC P1156 | FUEL SELECT SWITCH CIRCUIT |
| DTC P115E | THROTTLE ACTUATOR CONTROL (TAC) THROTTLE BODY AIR FLOW TRIM AT MAX LIMIT |
| DTC P117A | ENGINE OIL OVER TEMPERATURE - FORCED LIMITED POWER |
| DTC P1184 | ENGINE OIL TEMPERATURE (EOT) SENSOR OUT OF SELF-TEST RANGE |
| DTC P1229 | CHARGE AIR COOLER (CAC) PUMP DRIVER |
| DTC P1233 | FUEL PUMP DRIVER MODULE DISABLED OR OFF LINE |
| DTC P1234 | FUEL PUMP DRIVER MODULE DISABLED OR OFF LINE |
| DTC P1235 | FUEL PUMP CONTROL OUT OF RANGE |
| DTC P1236 | FUEL PUMP CONTROL OUT OF RANGE |
| DTC P1237 | FUEL PUMP SECONDARY CIRCUIT |
| DTC P1238 | FUEL PUMP SECONDARY CIRCUIT |
| DTC P1244 | ALTERNATOR LOAD HIGH INPUT |
| DTC P1245 | ALTERNATOR LOAD LOW INPUT |
| DTC P1246 | ALTERNATOR LOAD INPUT |
| DTC P1260 | THEFT DETECTED, VEHICLE IMMOBILIZED |
| DTC P1261 | CYLINDER 1 HIGH TO LOW SIDE SHORT |
| DTC P1262 | CYLINDER 2 HIGH TO LOW SIDE SHORT |
| DTC P1263 | CYLINDER 3 HIGH TO LOW SIDE SHORT |
| DTC P1264 | CYLINDER 4 HIGH TO LOW SIDE SHORT |
| DTC P1265 | CYLINDER 5 HIGH TO LOW SIDE SHORT |
| DTC P1266 | CYLINDER 6 HIGH TO LOW SIDE SHORT |
| DTC P1267 | CYLINDER 7 HIGH TO LOW SIDE SHORT |
| DTC P1268 | CYLINDER 8 HIGH TO LOW SIDE SHORT |
| DTC P1270 | ENGINE RPM OR VEHICLE SPEED LIMITER REACHED |
| DTC P1271 | CYLINDER 1 HIGH TO LOW SIDE OPEN |
| DTC P1272 | CYLINDER 2 HIGH TO LOW SIDE OPEN |
| DTC P1273 | CYLINDER 3 HIGH TO LOW SIDE OPEN |
| DTC P1274 | CYLINDER 4 HIGH TO LOW SIDE OPEN |
| DTC P1275 | CYLINDER 5 HIGH TO LOW SIDE OPEN |
| DTC P1276 | CYLINDER 6 HIGH TO LOW SIDE OPEN |
| DTC P1277 | CYLINDER 7 HIGH TO LOW SIDE OPEN |
| DTC P1278 | CYLINDER 8 HIGH TO LOW SIDE OPEN |
| DTC P1285 | CYLINDER HEAD OVER TEMPERATURE CONDITION |
| DTC P1288 | CYLINDER HEAD TEMPERATURE (CHT) SENSOR OUT OF SELF-TEST RANGE |
| DTC P1289 | CYLINDER HEAD TEMPERATURE (CHT) SENSOR CIRCUIT HIGH |
| DTC P128A | CYLINDER HEAD TEMPERATURE (CHT) SENSOR CIRCUIT INTERMITTENT/ERRATIC |
| DTC P1290 | CYLINDER HEAD TEMPERATURE (CHT) SENSOR CIRCUIT LOW |
| DTC P1299 | CYLINDER HEAD OVER TEMPERATURE PROTECTION ACTIVE |
| DTC P1309 | MISFIRE MONITOR HARDWARE - CAMSHAFT POSITION SENSOR (CMP) MISALIGNED, CRANKSHAFT POSITION SENSOR (CKP)/CMP NOISE, POWERTRAIN CONTROL MODULE (PCM) AICE CHIP |
| DTC P1336 | CRANKSHAFT/CAMSHAFT SENSOR RANGE/PERFORMANCE |
| DTC P1397 | SYSTEM VOLTAGE OUT OF SELF-TEST RANGE |
| DTC P1405 | DIFFERENTIAL PRESSURE FEEDBACK (DPF) SENSOR UPSTREAM HOSE OFF OR PLUGGED |
| DTC P1406 | DIFFERENTIAL PRESSURE FEEDBACK (DPF) SENSOR DOWNSTREAM HOSE OFF OR PLUGGED |
| DTC P1408 | EXHAUST GAS RECIRCULATION (EGR) FLOW OUT OF SELF-TEST RANGE (NON-MIL) |
| DTC P1409 | EXHAUST GAS RECIRCULATION (EGR) VACUUM REGULATOR (EGRVR) SOLENOID CIRCUIT |
| DTC P1436 | A/C EVAPORATOR TEMPERATURE (A/CET) CIRCUIT LOW INPUT |
| DTC P1437 | A/C EVAPORATOR TEMPERATURE (A/CET) CIRCUIT HIGH INPUT |
| DTC P1443 | EVAPORATIVE EMISSION SYSTEM CONTROL VALVE (LOW/NO FLOW) |
| DTC P1450 | UNABLE TO BLEED UP FUEL TANK VACUUM |
| DTC P1451 | EVAPORATIVE EMISSION SYSTEM VENT CONTROL CIRCUIT |
| DTC P1460 | A/C CLUTCH RELAY (A/CCR) PRIMARY CIRCUIT MALFUNCTION (ALSO REFERRED TO AS WAC CIRCUIT) |
| DTC P1461 | AIR CONDITIONING PRESSURE (A/CP) SENSOR HIGH VOLTAGE DETECTED |
| DTC P1462 | AIR CONDITIONING PRESSURE (A/CP) SENSOR LOW VOLTAGE DETECTED |
| DTC P1463 | AIR CONDITIONING PRESSURE SENSOR (A/CP) INSUFFICIENT PRESSURE CHANGE |
| DTC P1464 | A/C DEMAND OUT OF SELF-TEST RANGE |
| DTC P1469 | LOW A/C CYCLING PERIOD |
| DTC P1474 | LOW FAN CONTROL (LFC)/FAN CONTROL 1 (FC1) PRIMARY CIRCUIT MALFUNCTION |
| DTC P1477 | MEDIUM FAN CONTROL (MFC)/ FAN CONTROL 2 (FC2) PRIMARY CIRCUIT FAILURE |
| DTC P1479 | HIGH FAN CONTROL (HFC)/FAN CONTROL 3 (FC3) PRIMARY CIRCUIT MALFUNCTION |
| DTC P1489 | PCV HEATER CONTROL CIRCUIT |
| DTC P1500 | VEHICLE SPEED SENSOR (VSS) |
| DTC P1501 | VEHICLE SPEED SENSOR (VSS) OUT OF SELF-TEST RANGE |
| DTC P1502 | VEHICLE SPEED SENSOR (VSS) INTERMITTENT |
| DTC P1504 | IDLE AIR CONTROL (IAC) CIRCUIT |
| DTC P1506 | IDLE AIR CONTROL (IAC) OVERSPEED ERROR |
| DTC P1507 | IDLE AIR CONTROL (IAC) UNDERSPEED ERROR |
| DTC P1512 | INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK CLOSED (BANK 1) |
| DTC P1513 | INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK CLOSED (BANK 2) |
| DTC P1516 | INTAKE MANIFOLD RUNNER CONTROL (IMRC) INPUT ERROR (BANK 1) |
| DTC P1517 | INTAKE MANIFOLD RUNNER CONTROL (IMRC) INPUT ERROR (BANK 2) |
| DTC P1518 | INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK OPEN BANK 1 |
| DTC P1519 | INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK CLOSED BANK 1 |
| DTC P151A | INTAKE MANIFOLD RUNNER CONTROLLER PERFORMANCE |
| DTC P1520 | INTAKE MANIFOLD RUNNER CONTROL (IMRC) CIRCUIT |
| DTC P1537 | INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK OPEN (BANK 1) |
| DTC P1538 | INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK OPEN (BANK 2) |
| DTC P1549 | INTAKE MANIFOLD COMMUNICATION CONTROL (IMCC) CIRCUIT (BANK 1) |
| DTC P1550 | POWER STEERING PRESSURE (PSP) SENSOR OUT OF SELF-TEST RANGE |
| DTC P1565 | SPEED CONTROL COMMAND SWITCH OUT OF RANGE HIGH |
| DTC P1566 | SPEED CONTROL COMMAND SWITCH OUT OF RANGE LOW |
| DTC P1567 | SPEED CONTROL OUTPUT CIRCUIT |
| DTC P1568 | SPEED CONTROL UNABLE TO HOLD SPEED |
| DTC P1572 | BRAKE PEDAL SWITCH CIRCUIT |
| DTC P1582 | ELECTRONIC THROTTLE MONITOR DATA AVAILABLE |
| DTC P1633 | KEEP ALIVE POWER (KAPWR) VOLTAGE TOO LOW |
| DTC P1635 | TIRE/AXLE RATIO OUT OF ACCEPTABLE RANGE |
| DTC P1636 | INDUCTIVE SIGNATURE CHIP COMMUNICATION ERROR |
| DTC P1639 | VEHICLE ID (VID) BLOCK CORRUPTED, NOT PROGRAMMED |
| DTC P1640 | POWERTRAIN DTCS AVAILABLE IN ANOTHER MODULE |
| DTC P1641 | FUEL PUMP PRIMARY CIRCUIT |
| DTC P1650 | POWER STEERING PRESSURE (PSP) SWITCH OUT OF SELF-TEST RANGE |
| DTC P1651 | POWER STEERING PRESSURE (PSP) SWITCH INPUT |
| DTC P1674 | CONTROL MODULE SOFTWARE CORRUPTED |
| DTC P1703 | BRAKE SWITCH OUT OF SELF-TEST RANGE |
| DTC P1705 | TRANSMISSION RANGE SENSOR OUT OF SELF-TEST RANGE |
| DTC P1709 | PARK/NEUTRAL POSITION (PNP) SWITCH OUT OF SELF-TEST RANGE |
| DTC P1729 | 4X4L SWITCH CIRCUIT MALFUNCTION |
| DTC P1780 | TRANSMISSION CONTROL SWITCH (TCS) OUT OF SELF-TEST RANGE |
| DTC P1781 | 4X4L SWITCH OUT OF SELF-TEST RANGE |
| DTC P17XX | |
| DTC P18xx | |
| DTC P1900 | OUTPUT SHAFT SPEED (OSS) SENSOR CIRCUIT INTERMITTENT |
| DTC P1901 | TURBINE SHAFT SPEED (TSS) SENSOR CIRCUIT INTERMITTENT |
| DTC P1910 | REVERSE LAMP CONTROL CIRCUIT CONDITION |
| DTC P2004 | INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK OPEN (BANK 1) |
| DTC P2005 | INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK OPEN (BANK 2) |
| DTC P2006 | INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK CLOSED (BANK 1) |
| DTC P2007 | INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK CLOSED (BANK 2) |
| DTC P2008 | INTAKE MANIFOLD RUNNER CONTROL (IMRC) CIRCUIT OPEN (BANK 1) |
| DTC P2014 | INTAKE MANIFOLD RUNNER POSITION SENSOR/SWITCH CIRCUIT (BANK 1) |
| DTC P2015 | INTAKE MANIFOLD RUNNER POSITION SENSOR/SWITCH CIRCUIT RANGE/PERFORMANCE (BANK 1) |
| DTC P2019 | INTAKE MANIFOLD RUNNER POSITION SENSOR/SWITCH CIRCUIT (BANK 2) |
| DTC P2020 | INTAKE MANIFOLD RUNNER POSITION SENSOR/SWITCH CIRCUIT RANGE/PERFORMANCE (BANK 2) |
| DTC P2065 | FUEL LEVEL SENSOR B CIRCUIT |
| DTC P2066 | FUEL LEVEL SENSOR B CIRCUIT RANGE/PERFORMANCE |
| DTC P2067 | FUEL LEVEL SENSOR B CIRCUIT LOW |
| DTC P2068 | FUEL LEVEL SENSOR B CIRCUIT HIGH |
| DTC P2070 | INTAKE MANIFOLD TUNING VALVE (IMTV) STUCK OPEN BANK 1 |
| DTC P2071 | INTAKE MANIFOLD TUNING VALVE (IMTV) STUCK CLOSED BANK 1 |
| DTC P2072 | THROTTLE ACTUATOR CONTROL SYSTEM - ICE BREAKAGE |
| DTC P2100 | THROTTLE ACTUATOR CONTROL (TAC) MOTOR CIRCUIT/OPEN |
| DTC P2101 | THROTTLE ACTUATOR CONTROL (TAC) MOTOR RANGE/PERFORMANCE |
| DTC P2104 | THROTTLE ACTUATOR CONTROL (TAC) SYSTEM - FORCED IDLE |
| DTC P2105 | Throttle Actuator Control (TAC) System - Forced Engine Shutdown |
| DTC P2106 | Throttle Actuator Control (TAC) System - Forced Limited Power |
| DTC P2107 | Throttle Actuator Control (TAC) Motor Processor |
| DTC P2110 | Throttle Actuator Control (TAC) System - Forced Limited RPM |
| DTC P2111 | Throttle Actuator Control (TAC) System - Stuck Open |
| DTC P2112 | Throttle Actuator Control (TAC) System - Stuck Closed. |
| DTC P2121 | THROTTLE/PEDAL POSITION SENSOR/SWITCH D CIRCUIT RANGE/PERFORMANCE |
| DTC P2122 | THROTTLE/PEDAL POSITION SENSOR/SWITCH D CIRCUIT LOW |
| DTC P2123 | THROTTLE/PEDAL POSITION SENSOR/SWITCH D CIRCUIT HIGH |
| DTC P2126 | THROTTLE/PEDAL POSITION SENSOR/SWITCH E CIRCUIT RANGE/PERFORMANCE |
| DTC P2127 | THROTTLE/PEDAL POSITION SENSOR/SWITCH E CIRCUIT LOW |
| DTC P2128 | THROTTLE/PEDAL POSITION SENSOR/SWITCH E CIRCUIT HIGH |
| DTC P2131 | THROTTLE/PEDAL POSITION SENSOR/SWITCH F CIRCUIT RANGE/PERFORMANCE |
| DTC P2132 | THROTTLE/PEDAL POSITION SENSOR/SWITCH F CIRCUIT LOW |
| DTC P2133 | THROTTLE/PEDAL POSITION SENSOR/SWITCH F CIRCUIT HIGH |
| DTC P2135 | THROTTLE/PEDAL POSITION SENSOR/SWITCH A/B VOLTAGE CORRELATION |
| DTC P2195 | O2 SENSOR SIGNAL BIASED/STUCK LEAN - BANK 1, SENSOR 1 |
| DTC P2196 | O2 SENSOR SIGNAL BIASED/STUCK RICH - BANK 1, SENSOR 1 |
| DTC P2197 | O2 SENSOR SIGNAL BIASED/STUCK LEAN - BANK 2, SENSOR 1 |
| DTC P2198 | O2 SENSOR SIGNAL BIASED/STUCK RICH - BANK 2, SENSOR 1 |
| DTC P2257 | SECONDARY AIR INJECTION (AIR) SYSTEM CONTROL A CIRCUIT LOW |
| DTC P2258 | SECONDARY AIR INJECTION (AIR) SYSTEM CONTROL A CIRCUIT HIGH |
| DTC P2270 | O2 SENSOR SIGNAL STUCK LEAN - BANK 1, SENSOR 2 |
| DTC P2271 | O2 SENSOR SIGNAL STUCK RICH - BANK 1, SENSOR 2 |
| DTC P2272 | O2 SENSOR SIGNAL STUCK LEAN - BANK 2, SENSOR 2 |
| DTC P2273 | O2 SENSOR SIGNAL STUCK RICH - BANK 2, SENSOR 2 |
| DTC P2274 | O2 SENSOR SIGNAL STUCK LEAN - BANK 1, SENSOR 3 |
| DTC P2275 | O2 SENSOR SIGNAL STUCK RICH - BANK 1, SENSOR 3 |
| DTC P2448 | SECONDARY AIR INJECTION SYSTEM HIGH AIRFLOW (BANK 1) |
| DTC P260F | EVAPORATIVE SYSTEM MONITORING PROCESSOR PERFORMANCE |
| DTC U0101 | LOST COMMUNICATION WITH TRANSAXLE CONTROL MODULE (TCM) |
| DTC U0121 | LOST COMMUNICATION WITH THE ANTI-LOCK BRAKE SYSTEM (ABS) CONTROL MODULE |
| DTC U0133 | LOST COMMUNICATION WITH ACTIVE ROLL CONTROL MODULE |
| DTC U0155 | LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER CONTROL MODULE |
| DTC U0300 | INTERNAL CONTROL MODULE SOFTWARE INCOMPATIBILITY |
| DTC U0434 | INVALID DATA RECEIVED FROM ACTIVE ROLL CONTROL MODULE |
| DTC U1021 | SCP INVALID OR MISSING DATA FOR AIR CONDITIONING CLUTCH |
| DTC U1039 | SCP INVALID OR MISSING DATA FOR VEHICLE SPEED |
| DTC U1051 | SCP INVALID OR MISSING DATA FOR BRAKES |
| DTC U1131 | SCP INVALID OR MISSING DATA FOR FUEL SYSTEM |
| DTC U1147 | SCP INVALID OR MISSING DATA FOR VEHICLE SECURITY |
| DTC U1262 | SCP Communication Bus Fault - Perform Network Communication Test |
| DTC U1451 | SCP Invalid or Missing Data for Anti-Theft module |
DIAGNOSTIC TROUBLE CODES (DTC) LIST
DTC P0010: INTAKE CAMSHAFT POSITION ACTUATOR CIRCUIT/OPEN (BANK 1)
| Description | The powertrain control module (PCM) monitors the variable camshaft timing (VCT) circuit to the PCM for high and low voltage. If during testing the voltage exceeds or falls below a calibrated limit for a calibrated amount of time the test fails. | ||
|---|---|---|---|
| Possible Causes | Open or short in the VCT circuit Open VPWR circuit Open or short in the VCT solenoid valve | ||
| Diagnostic Aids | This DTC is a circuit check. Testing should include the harness and solenoid coil. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HK . | ||
P0010 - INTAKE CAMSHAFT POSITION ACTUATOR CIRCUIT/OPEN (BANK 1)
DTC P0011: INTAKE CAMSHAFT POSITION TIMING - OVER-ADVANCED (BANK 1)
| Description | The powertrain control module (PCM) monitors the variable camshaft timing (VCT) position for an over-advanced camshaft timing. The test fails when the camshaft timing exceeds a maximum calibrated value or remains in an advanced position. | ||
|---|---|---|---|
| Possible Causes | Camshaft timing improperly set Continuous oil flow to the VCT piston chamber VCT solenoid valve stuck open Camshaft advance mechanism binding (VCT unit) | ||
| Diagnostic Aids | This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate ENGINE SYSTEM - GENERAL INFORMATION article . | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HK . | GO to Pinpoint Test HK . | |
P0011 - INTAKE CAMSHAFT POSITION TIMING - OVER-ADVANCED (BANK 1)
DTC P0012: INTAKE CAMSHAFT POSITION TIMING - OVER-RETARDED (BANK 1)
| Description | The powertrain control module (PCM) monitors the variable camshaft timing (VCT) position for over-retarded camshaft timing. The test fails when the camshaft timing exceeds a maximum calibrated value or remains in a retarded position. | ||
|---|---|---|---|
| Possible Causes | Camshaft timing improperly set Continuous oil flow to the VCT piston chamber VCT solenoid valve stuck open Camshaft advance mechanism binding (VCT unit) | ||
| Diagnostic Aids | This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate ENGINE SYSTEM - GENERAL INFORMATION article . | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HK . | GO to Pinpoint Test HK . | |
P0012 - INTAKE CAMSHAFT POSITION TIMING - OVER-RETARDED (BANK 1)
DTC P0016: CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION - BANK 1 SENSOR A
| Description | The powertrain control module (PCM) monitors the variable camshaft timing (VCT) position for a misalignment between the camshaft and crankshaft. The test fails when the misalignment is 1 tooth or greater. This DTC can also be set due to VCT system concerns (oil contamination or VCT solenoid stuck). | ||
|---|---|---|---|
| Possible Causes | Camshaft timing incorrectly set VCT solenoid stuck in position Camshaft advance mechanism binding (VCT unit) | ||
| Diagnostic Aids | This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate ENGINE SYSTEM - GENERAL INFORMATION article . | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HK . | ||
P0016 - CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION - BANK 1 SENSOR A
DTC P0018: CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION - BANK 2 SENSOR A
| Description | See the description for DTC P0016. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0016. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0016. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HK . | ||
P0018 - CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION - BANK 2 SENSOR A
DTC P0020: INTAKE CAMSHAFT POSITION ACTUATOR CIRCUIT/OPEN (BANK 2)
| Description | See the description for DTC P0010. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0010. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0010. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HK . | ||
P0020 - INTAKE CAMSHAFT POSITION ACTUATOR CIRCUIT/OPEN (BANK 2)
DTC P0021: INTAKE CAMSHAFT POSITION TIMING - OVER-ADVANCED (BANK 2)
P0021 - INTAKE CAMSHAFT POSITION TIMING - OVER-ADVANCED (BANK 2)
DTC P0022: INTAKE CAMSHAFT POSITION TIMING - OVER-RETARDED (BANK 2)
P0022 - INTAKE CAMSHAFT POSITION TIMING - OVER-RETARDED (BANK 2)
DTC P0040: OXYGEN SENSOR SIGNALS SWAPPED BANK 1 SENSOR 1/BANK 2 SENSOR 1
| Description | The heated oxygen sensor (HO2S) monitor determines if the HO2S signal response for a fuel shift corresponds to the correct engine bank. The test fails when a response from the HO2S being tested is not present. | ||
|---|---|---|---|
| Possible Causes | Crossed HO2S harness connectors Crossed HO2S wiring at the harness connectors Crossed HO2S wiring at the PCM connectors | ||
| Diagnostic Aids | Connect the HO2S connector to the correct bank. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DW . | ||
P0040 - OXYGEN SENSOR SIGNALS SWAPPED BANK 1 SENSOR 1/BANK 2 SENSOR 1
DTC P0041: OXYGEN SENSOR SIGNALS SWAPPED BANK 1 SENSOR 2/BANK 2 SENSOR 2
| Description | The heated oxygen sensor (HO2S) monitor determines if the HO2S signal response for a fuel shift corresponds to the correct engine bank. The test fails when a response from the HO2S being tested is not present. | ||
|---|---|---|---|
| Possible Causes | Crossed HO2S harness connectors Crossed HO2S wiring at the harness connectors Crossed HO2S wiring at the PCM connectors | ||
| Diagnostic Aids | Connect the HO2S connector to the correct bank. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DW . | ||
P0041 - OXYGEN SENSOR SIGNALS SWAPPED BANK 1 SENSOR 2/BANK 2 SENSOR 2
DTC P0053: HO2S HEATER RESISTANCE (BANK 1, SENSOR 1)
| Description | Heater current requirements too low or high in the heated oxygen sensor (HO2S) heater control circuit. | ||
|---|---|---|---|
| Possible Causes | VPWR circuit open HO2S heater circuit open HO2S heater circuit short in the harness Damaged HO2S heater | ||
| Diagnostic Aids | Inspect the connectors for signs of damage, water ingress, or corrosion. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DW . | ||
P0053 - HO2S HEATER RESISTANCE (BANK 1, SENSOR 1)
DTC P0054: HO2S HEATER RESISTANCE (BANK 1, SENSOR 2)
| Description | See the description for DTC P0053. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0053. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0053. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DW . | ||
P0054 - HO2S HEATER RESISTANCE (BANK 1, SENSOR 2)
DTC P0055: HO2S HEATER RESISTANCE (BANK 1, SENSOR 3)
| Description | See the description for DTC P0053. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0053. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0053. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DW . | ||
P0055 - HO2S HEATER RESISTANCE (BANK 1, SENSOR 3)
DTC P0059: HO2S HEATER RESISTANCE (BANK 2, SENSOR 1)
| Description | See the description for DTC P0053. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0053. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0053. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DW . | ||
P0059 - HO2S HEATER RESISTANCE (BANK 2, SENSOR 1)
DTC P0060: HO2S HEATER RESISTANCE (BANK 2, SENSOR 2)
| Description | See the description for DTC P0053. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0053. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0053. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DW . | ||
P0060 - HO2S HEATER RESISTANCE (BANK 2, SENSOR 2)
DTC P0068: MANIFOLD ABSOLUTE PRESSURE (MAP)/MASS AIR FLOW (MAF) - THROTTLE POSITION CORRELATION
| Description | The powertrain control module (PCM) monitors a vehicle operation rationality check by comparing sensed throttle position to mass air flow readings. If during a key on engine running (KOER) selftest, the comparison of the throttle position (TP) sensor and MAF sensor readings are not consistent with the calibrated load values, the test fails and a DTC is stored in continuous memory. | ||
|---|---|---|---|
| Possible Causes | Air leak between MAF sensor and throttle body TP sensor not seated properly Damaged TP sensor Damaged MAF sensor | ||
| Diagnostic Aids | Drive the vehicle and exercise the throttle and the TP sensor in all gears. A TP PID (TP V PID) less than 4.82% (0.24 volt) with a LOAD PID greater than 55%, or a TP PID (TP V PID) greater than 49.05% (2.44 volts) with a LOAD PID less than 30% indicates a concern is present. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles With Electronic Throttle Control (ETC) | GO to Pinpoint Test DV . | GO to Pinpoint Test DV . | |
| All others | GO to Pinpoint Test DH . | GO to Pinpoint Test DH . | |
P0068 - MANIFOLD ABSOLUTE PRESSURE (MAP)/MASS AIR FLOW (MAF) - THROTTLE POSITION CORRELATION
DTC P0102: MASS OR VOLUME AIR FLOW A CIRCUIT LOW
| Description | The mass air flow (MAF) sensor circuit is monitored by the powertrain control module (PCM) for low air flow (or voltage) input through the comprehensive component monitor (CCM). If during key on, engine running (KOER) the air flow (or voltage) changes below a minimum calibrated limit, the test fails. | ||
|---|---|---|---|
| Possible Causes | MAF sensor disconnected MAF circuit open to PCM VPWR open to MAF sensor PWR GND open to the MAF sensor MAF RTN circuit open to PCM MAF circuit shorted to GND Intake air leak (near the MAF sensor) A closed throttle indication (throttle position [TP] sensor system) Damaged MAF sensor | ||
| Diagnostic Aids | A MAF V PID reading less than 0.23 volt in continuous memory or KOER indicates a hard fault. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DC . | GO to Pinpoint Test DC . | |
P0102 - MASS OR VOLUME AIR FLOW A CIRCUIT LOW
DTC P0103: MASS OR VOLUME AIR FLOW A CIRCUIT HIGH
| Description | The mass air flow (MAF) sensor circuit is monitored by the powertrain control module (PCM) for high air flow (or voltage) input through the comprehensive component monitor (CCM). If during key on, engine off (KOEO), or key on, engine running (KOER), the air flow (or voltage) changes above a maximum calibrated limit, the test fails. | ||
|---|---|---|---|
| Possible Causes | MAF sensor screen is blocked MAF circuit shorted to voltage Damaged MAF sensor | ||
| Diagnostic Aids | A MAF V PID (MAF PID) reading greater than 4.6 volts during KOER indicates a hard fault. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DC . | ||
P0103 - MASS OR VOLUME AIR FLOW A CIRCUIT HIGH
DTC P0104: MASS OR VOLUME AIR FLOW A CIRCUIT INTERMITTENT/ERRATIC
| Description | A concern exists in the mass air flow (MAF) sensor A circuit, or the air tube containing the sensor, causing an incorrect air flow reading. | ||
|---|---|---|---|
| Possible Causes | Intermittent circuit A open or short. Air leaks in the tube from the MAF to the throttle body | ||
| Diagnostic Aids | Verify the integrity of the MAF sensor circuit A, for intermittent concern. Check the MAF sensor tube for air leaks. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DC . | GO to Pinpoint Test DC . | |
P0104 - MASS OR VOLUME AIR FLOW A CIRCUIT INTERMITTENT/ERRATIC
DTC P0106: MANIFOLD ABSOLUTE PRESSURE (MAP/BARO) SENSOR RANGE/PERFORMANCE
| Description | MAP sensor input to the powertrain control module (PCM) is monitored and is not within the calibrated value. | ||
|---|---|---|---|
| Possible Causes | Slow responding MAP sensor Electrical circuit failure Damaged MAP sensor | ||
| Diagnostic Aids | VREF voltage should be between 4.0 and 6.0 volts. The PID reading is in frequency. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DM . | ||
P0106 - MANIFOLD ABSOLUTE PRESSURE (MAP/BARO) SENSOR RANGE/PERFORMANCE
DTC P0107: MANIFOLD ABSOLUTE PRESSURE (MAP)/BAROMETRIC PRESSURE (BARO) SENSOR LOW
| Description | Sensor operating voltage is less than 0.25 volt (VREF). As a result it failed below the minimum allowable calibrated parameter. | ||
|---|---|---|---|
| Possible Causes | Open in the circuit, or short to ground VREF circuit open, or short to ground Damaged MAP sensor | ||
| Diagnostic Aids | VREF should be greater than 4.0 volts. The PID reading is in frequency/volts. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DM . | ||
P0107 - MANIFOLD ABSOLUTE PRESSURE (MAP)/BAROMETRIC PRESSURE (BARO) SENSOR LOW
DTC P0108: MANIFOLD ABSOLUTE PRESSURE (MAP)/BAROMETRIC PRESSURE (BARO) SENSOR HIGH
| Description | Sensor operating voltage is greater than 5 volts (VREF). As a result it failed above the maximum allowable calibrated parameter. | ||
|---|---|---|---|
| Possible Causes | VREF shorted to VPWR MAP signal shorted to VPWR VREF should be less than 6.0 volts. The PID reading is in frequency/volts Open circuit | ||
| Diagnostic Aids | VREF should be greater than 4.0 volts. The PID reading is in frequency/volts. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DM . | ||
P0108 - MANIFOLD ABSOLUTE PRESSURE (MAP)/BAROMETRIC PRESSURE (BARO) SENSOR HIGH
DTC P0109: MANIFOLD ABSOLUTE PRESSURE (MAP)/BAROMETRIC PRESSURE (BARO) SENSOR INTERMITTENT
| Description | The sensor signal to the powertrain control module (PCM) is failing intermittently. | ||
|---|---|---|---|
| Possible Causes | Loose electrical connection Damaged MAP sensor | ||
| Diagnostic Aids | Check the harness and connection. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DM . | ||
P0109 - MANIFOLD ABSOLUTE PRESSURE (MAP)/BAROMETRIC PRESSURE (BARO) SENSOR INTERMITTENT
DTC P0112: INTAKE AIR TEMPERATURE (IAT) SENSOR 1 CIRCUIT LOW
| Description | Indicates the sensor signal is less than the self-test minimum. The IAT sensor minimum is 0.2 volt or 121°C (250°F). | ||
|---|---|---|---|
| Possible Causes | Grounded circuit in the harness Damaged sensor Improper harness connection | ||
| Diagnostic Aids | An IAT V PID reading less than 0.2 volt with key ON engine OFF or during any engine operating mode indicates a concern is present. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DA . | ||
P0112 - INTAKE AIR TEMPERATURE (IAT) SENSOR 1 CIRCUIT LOW
DTC P0113: INTAKE AIR TEMPERATURE (IAT) SENSOR 1 CIRCUIT HIGH
| Description | Indicates the sensor signal is greater than the self-test maximum. The IAT sensor maximum is 4.6 volts or -50°C (-58°F). | ||
|---|---|---|---|
| Possible Causes | Open circuit in the harness Sensor signal short to voltage Damaged sensor Improper harness connection | ||
| Diagnostic Aids | An IAT V PID reading greater than 4.6 volts with the key ON engine OFF or during any engine operating mode indicates a concern is present. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DA . | ||
P0113 - INTAKE AIR TEMPERATURE (IAT) SENSOR 1 CIRCUIT HIGH
DTC P0114: INTAKE AIR TEMPERATURE (IAT) SENSOR 1 INTERMITTENT/ERRATIC
| Description | Indicates the sensor signal was intermittent during the comprehensive component monitor. | ||
|---|---|---|---|
| Possible Causes | Damaged harness Damaged sensor Damaged harness connector | ||
| Diagnostic Aids | Monitor the IAT on a diagnostic tool. Look for sudden changes in the reading when the harness is wiggled or the sensor is tapped. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DA . | ||
P0114 - INTAKE AIR TEMPERATURE (IAT) SENSOR 1 INTERMITTENT/ERRATIC
DTC P0116: ENGINE COOLANT TEMPERATURE (ECT) SENSOR 1 CIRCUIT RANGE/PERFORMANCE
| Description | Indicates the engine coolant temperature rationality test has failed. The powertrain control module (PCM) logic that sets this DTC indicates that ECT or cylinder head temperature (CHT) drifted higher than the nominal sensor calibration curve and could prevent 1 or more on-board diagnostic (OBD) monitors from completing. The PCM runs this logic after an engine off and a calibrated soak period (typically 6 hours). This soak period allows the intake air temperature (IAT) and engine coolant temperature (CHT or ECT) to stabilize and not differ by more than a calibrated value. DTC P0116 is set when all of the following conditions are met: The engine coolant temperature at engine start exceeds the IAT at engine start by more than a calibrated value, typically 17°C (30°F). The engine coolant temperature exceeds a calibrated value, typically 107°C (225°F). The fuel system, heated oxygen and misfire monitors have not completed. The calibrated time to set DTC P0116 has expired. | ||
|---|---|---|---|
| Possible Causes | Engine coolant temperature (ECT) or cylinder head temperature (CHT) sensor Coolant system concern | ||
| Diagnostic Aids | Make sure the IAT and the engine coolant temperature are similar when the engine is cold. Also make sure the ECT or CHT sensor and the actual engine operating temperatures are the same. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles with only a (CHT) sensor | GO to Pinpoint Test DL . | ||
| All others | GO to Pinpoint Test DX . | ||
P0116 - ENGINE COOLANT TEMPERATURE (ECT) SENSOR 1 CIRCUIT RANGE/PERFORMANCE
DTC P0117: ENGINE COOLANT TEMPERATURE (ECT) SENSOR 1 CIRCUIT LOW
| Description | Indicates the sensor signal is less than the self-test minimum. The ECT sensor minimum is 0.2 volt or 121°C (250°F). | ||
|---|---|---|---|
| Possible Causes | Grounded circuit in the harness Damaged sensor Incorrect harness connection | ||
| Diagnostic Aids | An ECT V PID reading less than 0.2 volt with key ON engine OFF or during any engine operating mode indicates a concern is present. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DX . | ||
P0117 - ENGINE COOLANT TEMPERATURE (ECT) SENSOR 1 CIRCUIT LOW
DTC P0118: ENGINE COOLANT TEMPERATURE (ECT) SENSOR 1 CIRCUIT HIGH
| Description | Indicates the sensor signal is greater than the self-test maximum. The ECT sensor maximum is 4.6 volts or -50°C (-58°F). | ||
|---|---|---|---|
| Possible Causes | Open circuit in the harness Sensor signal short to voltage Improper harness connection Damaged sensor | ||
| Diagnostic Aids | An ECT V PID reading greater than 4.6 volts with the key ON engine OFF or during any engine operating mode indicates a concern is present. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DX . | ||
P0118 - ENGINE COOLANT TEMPERATURE (ECT) SENSOR 1 CIRCUIT HIGH
DTC P0119: ENGINE COOLANT TEMPERATURE (ECT) SENSOR 1 CIRCUIT INTERMITTENT/ERRATIC
| Description | Indicates the ECT circuit became intermittently open or shorted while the engine was running. On vehicles that are not equipped with an ECT sensor, the cylinder head temperature (CHT) sensor can be used and can set this DTC. | ||
|---|---|---|---|
| Possible Causes | Damaged harness Damaged sensor Damaged harness connector Low engine coolant | ||
| Diagnostic Aids | Monitor the ECT or the CHT on a diagnostic tool, look for sudden changes in the reading when the harness is wiggled or the sensor is tapped. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles with only a CHT sensor | GO to Pinpoint Test DL . | ||
| All others | GO to Pinpoint Test DX . | ||
P0119 - ENGINE COOLANT TEMPERATURE (ECT) SENSOR 1 CIRCUIT INTERMITTENT/ERRATIC
DTC P0121: THROTTLE/PEDAL POSITION SENSOR A CIRCUIT RANGE/PERFORMANCE
| For Vehicles With Electronic Throttle Control (ETC) | |||
|---|---|---|---|
| Description | The electronic throttle control (ETC) throttle position (TP) sensor 1 circuit was flagged as a concern by the powertrain control module (PCM) indicating an out of range in either the closed or wide open throttle (WOT) modes. | ||
| Possible Causes | Obstruction in the throttle plate movement Damaged throttle body TP circuit open to PCM Damaged TP sensor SIG RTN circuit open to the TP sensor | ||
| Diagnostic Aids | This concern exhibits a symptom of limited power. A TP1 PID (TP V PID) reading less than 13% (0.65 volt), or greater than 93% (4.65 volts) in key ON, engine OFF or key ON, engine running indicates a concern is present. | ||
| For All Others | |||
| Description | The throttle position (TP) sensor circuit is monitored by the powertrain control module (PCM) for a non-closed throttle position at idle. If the key on engine running (KOER) self-test terminates upon placing the transmission gear selector in DRIVE or REVERSE or when closing the throttle (idle) after opening it (in PARK or NEUTRAL) the TP closed throttle position is not attained, and the test fails. | ||
| Possible Causes | Binding throttle linkage Damaged throttle body TP circuit open to PCM Damaged TP sensor SIG RTN circuit open to the TP sensor | ||
| Diagnostic Aids | Drive the vehicle, bring it to a stop, and turn the key to the OFF position. Start the vehicle, and run the key on engine running (KOER) self-test at idle. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles With Electronic Throttle Control (ETC) | GO to Pinpoint Test DV . | ||
| All others | GO to Pinpoint Test DH . | ||
P0121 - THROTTLE/PEDAL POSITION SENSOR A CIRCUIT RANGE/PERFORMANCE
DTC P0122: THROTTLE/PEDAL POSITION SENSOR A CIRCUIT LOW
| For Vehicles With Electronic Throttle Control (ETC) | |||
|---|---|---|---|
| Description | The electronic throttle control (ETC) throttle position (TP) sensor 1 circuit was flagged as a concern by the powertrain control module (PCM) indicating a low voltage or open circuit. | ||
| Possible Causes | Open ETC TP sensor harness Short to ground in the ETC TP sensor harness Damaged TP sensor SIG RTN circuit open to the TP sensor | ||
| Diagnostic Aids | This concern exhibits a symptom of limited power. A TP1 PID (TP V PID) reading less than 3.42% (0.17 volt) in key ON, engine OFF or key ON, engine running indicates a concern is present. | ||
| For All Others | |||
| Description | The throttle position (TP) sensor circuit is monitored by the powertrain control module (PCM) for a high TP rotation angle (or voltage) input through the comprehensive component monitor (CCM). If during key ON, engine OFF or key ON, engine running the TP rotation angle (or voltage) changes above the maximum calibrated limit, the test fails. | ||
| Possible Causes | TP sensor not seated properly TP circuit open to PCM VREF open to TP sensor TP circuit short to GND Damaged TP sensor | ||
| Diagnostic Aids | This concern exhibits a symptom of limited power. A TP PID (TP V PID) reading less than 3.42% (0.17 volt) in key ON, engine OFF or key ON, engine running indicates a concern is present. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles With Electronic Throttle Control (ETC) | GO to Pinpoint Test DV . | ||
| All others | GO to Pinpoint Test DH . | ||
P0122 - THROTTLE/PEDAL POSITION SENSOR A CIRCUIT LOW
DTC P0123: THROTTLE/PEDAL POSITION SENSOR A CIRCUIT HIGH
| For Vehicles With Electronic Throttle Control (ETC) | |||
|---|---|---|---|
| Description | The electronic throttle control (ETC) throttle position (TP) sensor 1 circuit was flagged as a concern by the powertrain control module (PCM) indicating a high voltage. | ||
| Possible Causes | TP sensor harness shorted to VREF TP sensor harness is shorted to voltage Damaged TP sensor VREF circuit shorted to TP sensor | ||
| Diagnostic Aids | Drive the vehicle, bring it to a stop, and turn the key to the OFF position. Start the vehicle and carry out the key on engine running (KOER) self-test at idle. Access KOER DTCs on the diagnostic tool. The TP1 signal is normally at a high voltage at closed throttle, and a lower voltage at wide open throttle (opposite of TP2). | ||
| For All Others | |||
| Description | The throttle position (TP) sensor circuit is monitored by the powertrain control module (PCM) for a high TP rotation angle (or voltage) input through the comprehensive component monitor (CCM). If during key ON, engine OFF or key ON, engine running the TP rotation angle (or voltage) changes above the maximum calibrated limit, the test fails. | ||
| Possible Causes | TP sensor not seated properly TP sensor harness is shorted to voltage TP sensor harness shorted to VREF SIG RTN circuit open to the TP sensor Damaged TP sensor | ||
| Diagnostic Aids | A TP PID (TP V PID) reading greater than 93% 4.65 volts in key ON, engine OFF or key ON, engine running indicates a concern is present. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles With Electronic Throttle Control (ETC) | GO to Pinpoint Test DV . | ||
| All others | GO to Pinpoint Test DH . | ||
P0123 - THROTTLE/PEDAL POSITION SENSOR A CIRCUIT HIGH
DTC P0125: INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROL
| Description | Indicates the engine coolant temperature (ECT) or the cylinder heat temperature (CHT) sensor has not achieved the required temperature level to enter closed loop operating conditions within a specified amount of time after starting the engine. | ||
|---|---|---|---|
| Possible Causes | Insufficient warm up time Low engine coolant level Leaking or stuck open thermostat Malfunctioning ECT sensor Malfunctioning CHT sensor | ||
| Diagnostic Aids | Compare the thermostat specification to the actual engine coolant temperature using the engine temperature PID (ECT or CHT). The temperature reading should be similar when the engine is at a normal operating temperature. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles with only a CHT sensor | GO to Pinpoint Test DL . | ||
| All others | GO to Pinpoint Test DX . | ||
P0125 - INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROL
DTC P0127: INTAKE AIR TEMPERATURE (IAT) TOO HIGH
| Description | Indicates that the IAT2 sensor has detected a potential abnormality in the intercooler system. This condition will cause the boost from the supercharger to be bypassed to avoid potential engine damage. | ||
|---|---|---|---|
| Possible Causes | Blockage of heat exchangers Low fluid level Fluid leakage Intercooler pump or relay failure Crossed intercooler coolant lines | ||
| Diagnostic Aids | Monitor the IAT2 PID. A typical IAT2 temperature should be greater than the IAT1 temperature. Refer to REFERENCE VALUES for ranges. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DU . | ||
P0127 - INTAKE AIR TEMPERATURE (IAT) TOO HIGH
DTC P0128: COOLANT THERMOSTAT (COOLANT TEMPERATURE BELOW THERMOSTAT REGULATING TEMPERATURE)
| Description | Indicates that the thermostat monitor has not achieved the required engine operating temperature within a specified amount of time after starting the engine. | ||
|---|---|---|---|
| Possible Causes | Insufficient warm up time Low engine coolant level Leaking or stuck open thermostat Inoperative engine coolant temperature (ECT) sensor Inoperative cylinder head temperature (CHT) sensor | ||
| Diagnostic Aids | Refer to THERMOSTAT MONITOR for system information. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles with only a CHT sensor | GO to Pinpoint Test DL . | ||
| All others | GO to Pinpoint Test DX . | ||
P0128 - COOLANT THERMOSTAT (COOLANT TEMPERATURE BELOW THERMOSTAT REGULATING TEMPERATURE)
DTC P0132: O2 CIRCUIT HIGH VOLTAGE (BANK 1, SENSOR 1)
| Description | The heated oxygen sensor (HO2S) signals are monitored for an over voltage condition. The code is set when the HO2S signal voltage is 1.5 volts or greater. | ||
|---|---|---|---|
| Possible Causes | Short to VPWR in the harness or HO2S | ||
| Diagnostic Aids | An HO2S PID switching across 0.45 volt from 0.2 to 0.9 volt indicates a normal switching HO2S. An HO2S PID voltage of 1.5 volts or greater indicates a short to voltage. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DW . | ||
P0132 - O2 CIRCUIT HIGH VOLTAGE (BANK 1, SENSOR 1)
DTC P0133: O2 CIRCUIT SLOW RESPONSE (BANK 1, SENSOR 1)
| Description | The heated oxygen sensor (HO2S) monitor checks the HO2S frequency and amplitude. If during testing the frequency and amplitude fall below a calibrated limit, the test fails. | ||
|---|---|---|---|
| Possible Causes | Contaminated HO2S Exhaust leaks Shorted/open wiring Incorrect fueling MAF sensor Deteriorating HO2S Inlet air leaks | ||
| Diagnostic Aids | Access the HO2S test results from the generic OBD menu to verify the DTC. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DW . | ||
P0133 - O2 CIRCUIT SLOW RESPONSE (BANK 1, SENSOR 1)
DTC P0135: O2 HEATER CIRCUIT (BANK 1, SENSOR 1)
| Description | During testing the heated oxygen sensor (HO2S) heaters are checked for open and short circuits and excessive current draw. The test fails when the current draw exceeds a calibrated limit or an open or short circuit is detected. | ||
|---|---|---|---|
| Possible Causes | Vacuum hose disconnected on exhaust gas recirculation (EGR) system module (ESM) applications Short to VPWR in the harness or HO2S Water in the harness connector Open VPWR circuit Open GND circuit Low battery voltage Corrosion or incorrect harness connections Damaged HO2S heater | ||
| Diagnostic Aids | Check the HO2S electrical connector for damage, corrosion, and water intrusion. Damaged HO2S heater. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DW . | ||
P0135 - O2 HEATER CIRCUIT (BANK 1, SENSOR 1)
DTC P0138: O2 CIRCUIT HIGH VOLTAGE (BANK 1, SENSOR 2)
| Description | See the description for DTC P0132. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0132. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0132. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DW . | ||
P0138 - O2 CIRCUIT HIGH VOLTAGE (BANK 1, SENSOR 2)
DTC P0141: O2 HEATER CIRCUIT (BANK 1, SENSOR 2)
| Description | See the description for DTC P0135. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0135. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0135. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DW . | ||
P0141 - O2 HEATER CIRCUIT (BANK 1, SENSOR 2)
DTC P0144: O2 CIRCUIT HIGH VOLTAGE (BANK 1, SENSOR 3)
| Description | See the description for DTC P0132. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0132. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0132. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DW . | ||
P0144 - O2 CIRCUIT HIGH VOLTAGE (BANK 1, SENSOR 3)
DTC P0147: O2 HEATER CIRCUIT (BANK 1, SENSOR 3)
| Description | See the description for DTC P0135. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0135. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0135. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DW . | ||
P0147 - O2 HEATER CIRCUIT (BANK 1, SENSOR 3)
DTC P0148: FUEL DELIVERY ERROR
| Description | At least 1 bank is lean at wide open throttle. | ||
|---|---|---|---|
| Possible Causes | Severely restricted fuel filter Severely restricted fuel supply line Damaged or worn fuel pump Damaged or contaminated mass air flow (MAF) sensor | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HC . | ||
P0148 - FUEL DELIVERY ERROR
DTC P0152: O2 CIRCUIT HIGH VOLTAGE (BANK 2, SENSOR 1)
P0152 - O2 CIRCUIT HIGH VOLTAGE (BANK 2, SENSOR 1)
DTC P0153: O2 CIRCUIT SLOW RESPONSE (BANK 2, SENSOR 1)
| Description | See the description for DTC P0133. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0133. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0133. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DW . | ||
P0153 - O2 CIRCUIT SLOW RESPONSE (BANK 2, SENSOR 1)
DTC P0155: O2 HEATER CIRCUIT (BANK 2, SENSOR 1)
| Description | See the description for DTC P0135. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0135. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0135. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DW . | ||
P0155 - O2 HEATER CIRCUIT (BANK 2, SENSOR 1)
DTC P0158: O2 CIRCUIT HIGH VOLTAGE (BANK 2, SENSOR 2)
P0158 - O2 CIRCUIT HIGH VOLTAGE (BANK 2, SENSOR 2)
DTC P0161: O2 HEATER CIRCUIT (BANK 2, SENSOR 2)
| Description | See the description for DTC P0135. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0135. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0135. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DW . | ||
P0161 - O2 HEATER CIRCUIT (BANK 2, SENSOR 2)
DTC P0171: SYSTEM TOO LEAN (BANK 1)
| Description | The adaptive fuel strategy continuously monitors the fuel delivery hardware. The test fails when the adaptive fuel tables reach a rich calibrated limit. Refer to powertrain control software, FUEL TRIM for more information. | ||
|---|---|---|---|
| Possible Causes | Fuel System: Damaged or leaking fuel pulse damper Fuel filter plugged or dirty Damaged or worn fuel pump Leaking fuel pump check valve Leaking/contaminated fuel injectors Low fuel pressure or running out of fuel EVAP canister purge valve is leaking when the canister is clean Fuel supply line restricted Fuel rail pressure sensor bias Air Induction System: Air leaks after the mass air flow (MAF) sensor Vacuum leaks PCV system is leaking or the valve is stuck open Improperly seated engine oil dipstick Air induction turbulence due to incorrect air filter Exhaust System: Exhaust leaks in the exhaust manifold gasket or mating gaskets before or near the HO2S EGR System: Vacuum hose disconnected on exhaust gas recirculation (EGR) system module (ESM) applications EGR valve tube/gasket leak EVR solenoid vacuum leak Secondary Air Injection: Damaged secondary air injection system or a mechanically stuck valve Air Measurement System: Damaged or contaminated MAF sensor | ||
| Diagnostic Aids | View freeze frame data to determine the operating conditions when the DTC was set. Observe the LONGFT1 and LONGFT2 PIDs. Refer to ADAPTIVE FUEL DTC DIAGNOSTIC TECHNIQUES for more information. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test H . | ||
P0171 - SYSTEM TOO LEAN (BANK 1)
DTC P0172: SYSTEM TOO RICH (BANK 1)
| Description | The adaptive fuel strategy continuously monitors the fuel delivery hardware. The test fails when the adaptive fuel tables reach a rich calibrated limit. Refer to powertrain control software, FUEL TRIM for more information. | ||
|---|---|---|---|
| Possible Causes | Fuel System: Damaged or leaking fuel pulse damper Leaking fuel injectors Fuel return line restricted Fuel rail pressure sensor bias EVAP canister purge valve is leaking when the canister is full Base engine. Engine oil contamination Air Measurement System: Damaged or contaminated mass air flow (MAF) sensor | ||
| Diagnostic Aids | View freeze frame data to determine the operating conditions when the DTC was set. Observe the LONGFT1 and LONGFT2 PIDs. Refer to ADAPTIVE FUEL DTC DIAGNOSTIC TECHNIQUES for more information. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test H . | ||
P0172 - SYSTEM TOO RICH (BANK 1)
DTC P0174: SYSTEM TOO LEAN (BANK 2)
| Description | See the description for DTC P0171. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0171. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0171. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test H . | ||
P0174 - SYSTEM TOO LEAN (BANK 2)
DTC P0175: SYSTEM TOO RICH (BANK 2)
| Description | See the description for DTC P0172. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0172. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0172. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test H . | ||
P0175 - SYSTEM TOO RICH (BANK 2)
DTC P0180: FUEL TEMPERATURE SENSOR A CIRCUIT
| Description | The comprehensive component monitor (CCM) monitors the fuel temperature sensor circuit to the powertrain control module (PCM) for low and high voltage. If voltage falls below or exceeds a calibrated limit and amount of time during testing, the test fails. | ||
|---|---|---|---|
| Possible Causes | Open or short in the harness Low ambient temperature operation Improper harness connection Damaged fuel temperature sensor | ||
| Diagnostic Aids | Verify the FRT PID value to determine an open or short. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DD . | ||
P0180 - FUEL TEMPERATURE SENSOR A CIRCUIT
DTC P0181: FUEL TEMPERATURE SENSOR A CIRCUIT RANGE/PERFORMANCE
| Description | The comprehensive component monitor (CCM) monitors the fuel temperature sensor for acceptable operating temperature. If voltage falls below or exceeds a calibrated limit, for a calibrated amount of time during testing, the test fails. | ||
|---|---|---|---|
| Possible Causes | Open or short in the harness Low ambient temperature operation Incorrect harness connection Damaged fuel temperature sensor Damaged powertrain control module (PCM) | ||
| Diagnostic Aids | Verify the FRT PID value to determine an open or short. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DD . | GO to Pinpoint Test DD . | |
P0181 - FUEL TEMPERATURE SENSOR A CIRCUIT RANGE/PERFORMANCE
DTC P0182: FUEL TEMPERATURE SENSOR A CIRCUIT LOW
| Description | The comprehensive component monitor (CCM) monitors the fuel temperature sensor circuit to the powertrain control module (PCM) for low voltage. If voltage falls below a calibrated limit for a calibrated amount of time during testing, the test fails. | ||
|---|---|---|---|
| Possible Causes | Short in the harness VREF open or shorted Low ambient temperature operation Incorrect harness connection Damaged fuel temperature sensor | ||
| Diagnostic Aids | Verify the EFT/FRT-PID and VREF values to determine an open or short. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DD . | ||
P0182 - FUEL TEMPERATURE SENSOR A CIRCUIT LOW
DTC P0183: FUEL TEMPERATURE SENSOR A CIRCUIT HIGH
| Description | The comprehensive component monitor (CCM) monitors the fuel temperature sensor circuit to the powertrain control module (PCM) for high voltage. If voltage exceeds a calibrated limit for a calibrated amount of time during testing, the test fails. | ||
|---|---|---|---|
| Possible Causes | Open circuit Open or short to voltage in the harness Incorrect harness connection Damaged fuel temperature sensor | ||
| Diagnostic Aids | Verify the FRT PID value to determine an open or short. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DD . | ||
P0183 - FUEL TEMPERATURE SENSOR A CIRCUIT HIGH
DTC P0190: FUEL RAIL PRESSURE SENSOR A CIRCUIT
| Description | The comprehensive component monitor (CCM) monitors the fuel rail pressure (FRP) sensor to the powertrain control module (PCM) for VREF voltage. The test fails when the VREF voltage from the PCM drops to a voltage less than a minimum calibrated value. | ||
|---|---|---|---|
| Possible Causes | VREF open in harness VREF open in sensor Vacuum leaks | ||
| Diagnostic Aids | Verify a VREF voltage between 4 and 6 volts. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DD . | ||
P0190 - FUEL RAIL PRESSURE SENSOR A CIRCUIT
DTC P0191: FUEL RAIL PRESSURE SENSOR A CIRCUIT RANGE/PERFORMANCE
| Description | The comprehensive component monitor (CCM) checks the fuel rail pressure (FRP) sensor for an acceptable fuel pressure. The test fails when the fuel pressure falls below or exceeds a minimum/maximum calibrated value for a calibrated period of time. | ||
|---|---|---|---|
| Possible Causes | High fuel pressure Low fuel pressure Damaged FRP sensor Excessive resistance in the circuit Vacuum leaks Low or no fuel | ||
| Diagnostic Aids | A FRP PID value during key ON, engine running of 138 kPa (20 psi) to 413 kPa (60 psi) is acceptable. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DD . | ||
P0191 - FUEL RAIL PRESSURE SENSOR A CIRCUIT RANGE/PERFORMANCE
DTC P0192: FUEL RAIL PRESSURE SENSOR A CIRCUIT LOW
| Description | The comprehensive component monitor (CCM) monitors the fuel rail pressure (FRP) sensor circuit to the powertrain control module (PCM) for low voltage. If voltage falls below a calibrated limit for a calibrated amount of time during testing, the test fails. | ||
|---|---|---|---|
| Possible Causes | FRP signal shorted to SIG RTN or PWR GND Damaged FRP sensor | ||
| Diagnostic Aids | A FRP PID value during key ON, engine OFF or key ON, engine running less than 0.3 volt indicates a concern is present. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DD . | ||
P0192 - FUEL RAIL PRESSURE SENSOR A CIRCUIT LOW
DTC P0193: FUEL RAIL PRESSURE SENSOR A CIRCUIT HIGH
| Description | The comprehensive component monitor (CCM) monitors the fuel rail pressure (FRP) sensor circuit to the powertrain control module (PCM) for high voltage. If voltage exceeds a calibrated limit for a calibrated amount of time during testing, the test fails. | ||
|---|---|---|---|
| Possible Causes | FRP signal shorted to VREF or VPWR FRP signal open Damaged FRP sensor | ||
| Diagnostic Aids | An FRP signal high condition can be caused by any number of conditions, including a short on FRP signal to VREF, a more positive voltage level, an open FRP signal or signal return. The FRP signal line is pulled up by the PCM and VREF at the sensor, and down by the sensor through SIGRTN. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DD . | ||
P0193 - FUEL RAIL PRESSURE SENSOR A CIRCUIT HIGH
DTC P0196: ENGINE OIL TEMPERATURE (EOT) SENSOR CIRCUIT RANGE/PERFORMANCE
| Description | Indicates the value from the EOT sensor is not within the powertrain control module (PCM) predicted engine oil temperature range, based on other PCM inputs. | ||
|---|---|---|---|
| Possible Causes | Engine not at operating temperature Cooling system problem or stuck thermostat EOT circuit failure | ||
| Diagnostic Aids | The EOT rationality test looks for the EOT sensor value to be within a calibrated delta of the PCM predicted engine oil temperature. Make sure the EOT sensor reading is similar to engine temperature. If the EOT reading greatly differs from engine temperature, check the EOT circuitry for correct operation. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DY . | ||
P0196 - ENGINE OIL TEMPERATURE (EOT) SENSOR CIRCUIT RANGE/PERFORMANCE
DTC P0197: ENGINE OIL TEMPERATURE (EOT) SENSOR CIRCUIT LOW
| Description | Indicates EOT signal voltage is low (high temperature). | ||
|---|---|---|---|
| Possible Causes | Damaged harness Damaged harness connector Damaged sensor | ||
| Diagnostic Aids | An EOT V PID reading less than 0.2 volt with the key on engine off (KOEO) or during any engine operating mode indicates a short to ground. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DY . | ||
P0197 - ENGINE OIL TEMPERATURE (EOT) SENSOR CIRCUIT LOW
DTC P0198: ENGINE OIL TEMPERATURE (EOT) SENSOR CIRCUIT HIGH
| Description | Indicates EOT signal voltage is high (low temperature). | ||
|---|---|---|---|
| Possible Causes | Damaged harness Damaged harness connector Damaged sensor | ||
| Diagnostic Aids | An EOT V PID reading greater than 4.5 volts with the key ON engine OFF or during any engine operating mode indicates an open circuit. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DY . | ||
P0198 - ENGINE OIL TEMPERATURE (EOT) SENSOR CIRCUIT HIGH
DTC P020X: INJECTOR CIRCUIT/OPEN - CYLINDER X
| Description | Note: x represents injector number 1 through 9. The comprehensive component monitor (CCM) monitors the operation of the fuel injector drivers in the powertrain control module (PCM). The test fails when the fuel injector circuitry is inoperative. | ||
|---|---|---|---|
| Possible Causes | Open circuit Damaged fuel injector Damaged PCM Damaged fuel injector interface module (Ford GT only) | ||
| Diagnostic Aids | PID Data Monitor INJxF fault flags equals YES. For the Ford GT, this DTC is set when a concern is detected in the circuit between the PCM and the fuel injector interface module. For all others, this DTC is set when a concern is detected between the PCM and the fuel injector. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Ford GT | GO to Pinpoint Test HL . | ||
| All others | GO to Pinpoint Test KG . | ||
P020X - INJECTOR CIRCUIT/OPEN - CYLINDER X
DTC P0210: INJECTOR CIRCUIT/OPEN - CYLINDER 10
| Description | See the description for DTC P020x. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P020x. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P020x. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KG . | ||
P0210 - INJECTOR CIRCUIT/OPEN - CYLINDER 10
DTC P0217: ENGINE COOLANT OVER-TEMPERATURE CONDITION
| Description | Indicates an engine overheat condition was detected by the engine temperature sensor (CHT or ECT depending how the vehicle is equipped). This condition causes the boost from the supercharger to be bypassed to avoid potential engine damage. | ||
|---|---|---|---|
| Possible Causes | Engine cooling system concerns Low engine coolant level Base engine concerns | ||
| Diagnostic Aids | Monitor the engine temperature PID (CHT or ECT) for an overheat condition. Typical engine temperature should be close to cooling system thermostat specification. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DX . | ||
P0217 - ENGINE COOLANT OVER-TEMPERATURE CONDITION
DTC P0218: TRANSMISSION FLUID TEMPERATURE OVER-TEMPERATURE CONDITION
| Description | Indicates a transmission overheat condition was sensed by the transmission fluid temperature (TFT) sensor. | ||
|---|---|---|---|
| Possible Causes | Low transmission fluid level Transmission cooling system concerns | ||
| Diagnostic Aids | Monitor the transmission temperature PID TFT for an overheat condition. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P0218 - TRANSMISSION FLUID TEMPERATURE OVER-TEMPERATURE CONDITION
DTC P0219: ENGINE OVER SPEED CONDITION
| Description | Indicates the vehicle has been operated in a manner which caused the engine speed to exceed a calibrated limit. The engine RPM is continuously monitored and evaluated by the powertrain control module (PCM). The DTC is set when the RPM exceeds the calibrated limit set within the PCM. For additional information on the engine RPM limiter, refer to POWERTRAIN CONTROL SOFTWARE . | ||
|---|---|---|---|
| Possible Causes | Wheel slippage (water, ice, mud, and snow) Excessive engine RPM in NEUTRAL or operated in the wrong transmission gear | ||
| Diagnostic Aids | The DTC indicates the vehicle has been operated in a manner which caused the engine speed to exceed a calibrated limit. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test ND . | ||
P0219 - ENGINE OVER SPEED CONDITION
DTC P0221: THROTTLE/PEDAL POSITION SENSOR/SWITCH B CIRCUIT RANGE/PERFORMANCE
| Description | The electronic throttle control (ETC) throttle position (TP) sensor 2 circuit was flagged as a concern by the powertrain control module (PCM) indicating an out of range in either the closed or wide open throttle (WOT) modes. | ||
|---|---|---|---|
| Possible Causes | Binding throttle linkage Damaged throttle body TP circuit open to PCM Damaged TP sensor SIG RTN circuit open to the TP sensor Self-test operator error (foot resting on the accelerator pedal during test) | ||
| Diagnostic Aids | This concern exhibits a symptom of limited power. A TP2 PID (TP V PID) reading greater than 96.42% (4.65 volts) during key ON, engine OFF or key ON, engine running indicates a concern is present. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DV . | ||
P0221 - THROTTLE/PEDAL POSITION SENSOR/SWITCH B CIRCUIT RANGE/PERFORMANCE
DTC P0222: THROTTLE/PEDAL POSITION SENSOR/SWITCH B CIRCUIT LOW
| Description | The electronic throttle control (ETC) throttle position (TP) sensor 2 circuit was flagged as a concern by the powertrain control module (PCM) indicating a low voltage, or open circuit. | ||
|---|---|---|---|
| Possible Causes | Open ETC TP sensor harness Short to ground in the ETC TP sensor harness Damaged TP sensor SIG RTN circuit open to the TP sensor | ||
| Diagnostic Aids | This concern exhibits a symptom of limited power. A TP2 PID (TP V PID) reading less than 3.42% (0.17 volt) during key ON, engine OFF or key ON, engine running indicates a concern is present. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DV . | ||
P0222 - THROTTLE/PEDAL POSITION SENSOR/SWITCH B CIRCUIT LOW
DTC P0223: THROTTLE/PEDAL POSITION SENSOR/SWITCH B CIRCUIT HIGH
| Description | The electronic throttle control (ETC) throttle position (TP) sensor 2 circuit was flagged as a concern by the powertrain control module (PCM) indicating a high voltage. | ||
|---|---|---|---|
| Possible Causes | ETC TP sensor harness shorted to VREF Damaged TP sensor ETC TP2 circuit open VREF circuit shorted to TP sensor | ||
| Diagnostic Aids | This concern exhibits a symptom of limited power. A TP2 PID (TP V PID) reading greater than 93% (4.65 volts) in key ON, engine OFF or key ON, engine running indicates a concern is present. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DV . | ||
P0223 - THROTTLE/PEDAL POSITION SENSOR/SWITCH B CIRCUIT HIGH
DTC P0230: FUEL PUMP PRIMARY CIRCUIT
| Description | The powertrain control module (PCM) monitors the fuel pump (FP) circuit output from the PCM. The test fails when the FP output is commanded ON (grounded) and excessive current draw is detected on the FP circuit. The test also fails when the FP output is commanded OFF and voltage is not detected on the FP circuit. The PCM expects to detect VPWR voltage coming through the fuel pump relay coil to the FP circuit. | ||
|---|---|---|---|
| Possible Causes | Open or shorted (FP) circuit Open VPWR circuit to the fuel pump relay Damaged fuel pump relay Damaged PCM | ||
| Diagnostic Aids | When the FPF PID reads YES, a concern is present. An open circuit or short to ground can only be detected with the fuel pump commanded OFF. A short to voltage can only be detected with the fuel pump commanded ON. During the key on engine off (KOEO) and key on engine running (KOER) selftest, the fuel pump output command is cycled on and off. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KA . | ||
P0230 - FUEL PUMP PRIMARY CIRCUIT
DTC P0231: FUEL PUMP SECONDARY CIRCUIT LOW
| Description | The powertrain control module (PCM) monitors the fuel pump monitor (FPM) circuit. The test fails if the PCM commands the fuel pump ON and B+ voltage is not detected on the FPM circuit. | ||
|---|---|---|---|
| Possible Causes | Open B+ circuit to the fuel pump relay Open FP PWR circuit between the fuel pump relay and its connection to the FPM circuit Damaged fuel pump relay | ||
| Diagnostic Aids | During the key on engine off (KOEO) self-test, the PCM commands the fuel pump ON so this test can be carried out. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KA . | ||
P0231 - FUEL PUMP SECONDARY CIRCUIT LOW
DTC P0232: FUEL PUMP SECONDARY CIRCUIT HIGH
| Description | The powertrain control module (PCM) monitors the fuel pump monitor (FPM) circuit. This test fails when the PCM detects voltage on the FPM circuit while the fuel pump is commanded OFF. The FPM circuit is wired to a pull-up voltage inside the PCM. The FPM circuit goes high if, with the key ON, engine OFF and the fuel pump commanded OFF, the FPM/FP PWR circuit loses its path to ground through the fuel pump. The FPM circuit also goes high if the FPM/FP PWR circuit is short to voltage. | ||
|---|---|---|---|
| Possible Causes | Inertia fuel shutoff (IFS) switch not reset or electrically open Open circuit between the fuel pump and the FPM connection to the FP PWR circuit Poor fuel pump ground Fuel pump electrically open Fuel pump secondary circuits short to voltage Fuel pump relay contacts always closed Open FPM circuit between the PCM and the connection to the FP PWR circuit | ||
| Diagnostic Aids | Continuous memory P0232 can be set if the IFS switch is tripped then reset, or if the fuel pump circuit is activated when the PCM expected the circuit to be off. This DTC may set during a fuel system test or prime procedure. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KA . | ||
P0232 - FUEL PUMP SECONDARY CIRCUIT HIGH
DTC P0234: TURBOCHARGER/SUPERCHARGER A OVERBOOST CONDITION
| Description | The powertrain control module (PCM) disables (bypasses) the supercharger boost and sets a DTC to prevent damaging the powertrain (engine or transmission) during potentially harmful operating conditions. | ||
|---|---|---|---|
| Possible Causes | Engine over temperature Ignition misfire exceeds the calibrated threshold Fuel or fuel system concern. High or low IAT2 sensor reading. Damaged IAT2 sensor | ||
| Diagnostic Aids | Check for other DTCs accompanying the P0234, or check appropriate and available PIDs related to possible causes. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KJ . | ||
P0234 - TURBOCHARGER/SUPERCHARGER A OVERBOOST CONDITION
DTC P0243: TURBOCHARGER/SUPERCHARGER WASTEGATE SOLENOID A
| Description | The powertrain control module (PCM) monitors the supercharger bypass (SCB) solenoid circuit for an electrical failure. The test fails when the signal moves outside the minimum or maximum allowable calibrated parameters for a specified SCB solenoid duty cycle (100% or 0%) by PCM command. | ||
|---|---|---|---|
| Possible Causes | VPWR circuit open to SCB solenoid SCB solenoid circuit shorted to PWR GND or CHASSIS GND Damaged SCB solenoid SCB solenoid circuit open SCB solenoid circuit shorted to VPWR | ||
| Diagnostic Aids | With the test lamp connected to the SCB solenoid harness connector, cycle the solenoid on and off using output state control (OSC). If the test lamp cycles on and off the SCB solenoid is a suspect. If the test lamp is always on suspect the SCB solenoid driver circuit for short to ground. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KJ . | ||
P0243 - TURBOCHARGER/SUPERCHARGER WASTEGATE SOLENOID A
DTC P0261: CYLINDER 1 INJECTOR CIRCUIT LOW
| Description | This DTC is set when a concern is detected by the fuel injector interface module in the primary (forward) fuel injector circuit. | ||
|---|---|---|---|
| Possible Causes | Injector circuit is open Injector circuit is shorted to GND Damaged fuel injector Damaged fuel injector interface module | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P0261 - CYLINDER 1 INJECTOR CIRCUIT LOW
DTC P0262: CYLINDER 1 INJECTOR CIRCUIT HIGH
| Description | See the description for DTC P0261. | ||
|---|---|---|---|
| Possible Causes | Injector circuit is shorted to VPWR Damaged fuel injector Damaged fuel injector interface module | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P0262 - CYLINDER 1 INJECTOR CIRCUIT HIGH
DTC P0264: CYLINDER 2 INJECTOR CIRCUIT LOW
| Description | See the description for DTC P0261. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0261. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P0264 - CYLINDER 2 INJECTOR CIRCUIT LOW
DTC P0265: CYLINDER 2 INJECTOR CIRCUIT HIGH
| Description | See the description for DTC P0261. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0262. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P0265 - CYLINDER 2 INJECTOR CIRCUIT HIGH
DTC P0267: CYLINDER 3 INJECTOR CIRCUIT LOW
| Description | See the description for DTC P0261. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0261. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P0267 - CYLINDER 3 INJECTOR CIRCUIT LOW
DTC P0268: CYLINDER 3 INJECTOR CIRCUIT HIGH
| Description | See the description for DTC P0261. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0262. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P0268 - CYLINDER 3 INJECTOR CIRCUIT HIGH
DTC P0270: CYLINDER 4 INJECTOR CIRCUIT LOW
| Description | See the description for DTC P0261. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0261. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P0270 - CYLINDER 4 INJECTOR CIRCUIT LOW
DTC P0271: CYLINDER 4 INJECTOR CIRCUIT HIGH
| Description | See the description for DTC P0261. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0262. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P0271 - CYLINDER 4 INJECTOR CIRCUIT HIGH
DTC P0273: CYLINDER 5 INJECTOR CIRCUIT LOW
| Description | See the description for DTC P0261. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0261. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P0273 - CYLINDER 5 INJECTOR CIRCUIT LOW
DTC P0274: CYLINDER 5 INJECTOR CIRCUIT HIGH
| Description | See the description for DTC P0261. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0262. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P0274 - CYLINDER 5 INJECTOR CIRCUIT HIGH
DTC P0276: CYLINDER 6 INJECTOR CIRCUIT LOW
| Description | See the description for DTC P0261. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0261. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P0276 - CYLINDER 6 INJECTOR CIRCUIT LOW
DTC P0277: CYLINDER 6 INJECTOR CIRCUIT HIGH
| Description | See the description for DTC P0261. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0262. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P0277 - CYLINDER 6 INJECTOR CIRCUIT HIGH
DTC P0279: CYLINDER 7 INJECTOR CIRCUIT LOW
| Description | See the description for DTC P0261. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0261. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P0279 - CYLINDER 7 INJECTOR CIRCUIT LOW
DTC P0280: CYLINDER 7 INJECTOR CIRCUIT HIGH
| Description | See the description for DTC P0261. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0262. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P0280 - CYLINDER 7 INJECTOR CIRCUIT HIGH
DTC P0282: CYLINDER 8 INJECTOR CIRCUIT LOW
| Description | See the description for DTC P0261. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0261. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P0282 - CYLINDER 8 INJECTOR CIRCUIT LOW
DTC P0283: CYLINDER 8 INJECTOR CIRCUIT HIGH
| Description | See the description for DTC P0261. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0262. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P0283 - CYLINDER 8 INJECTOR CIRCUIT HIGH
DTC P0297: VEHICLE OVER SPEED CONDITION
| Description | Indicates the vehicle has been operated in a manner which caused the vehicle speed to exceed a calibration limit. The vehicle speed is continuously monitored and evaluated by the powertrain control module (PCM). The DTC is set when the vehicle speed exceeds the calibrated limit set within the PCM. For additional information on the vehicle speed limiter, refer to POWERTRAIN CONTROL SOFTWARE . | ||
|---|---|---|---|
| Possible Causes | Vehicle driven at a high rate of speed | ||
| Diagnostic Aids | The DTC indicates the vehicle has been operated in a manner which caused the engine speed to exceed a calibrated limit. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test ND . | ||
P0297 - VEHICLE OVER SPEED CONDITION
DTC P0298: ENGINE OIL OVER TEMPERATURE CONDITION
| Description | Indicates the engine oil temperature protection strategy in the powertrain control module (PCM) has been activated. This temporarily prohibits high engine speed operation by disabling injectors, reducing the risk of engine damage from high engine oil temperature. On engines which are equipped with an oil temperature sensor, the PCM reads oil temperature to determine if it is excessive. When an oil temperature sensor is not present, the PCM uses an oil algorithm to infer actual temperature. Engine shutdown strategy function is the same on vehicles with and without oil temperature sensors. | ||
|---|---|---|---|
| Possible Causes | Very high engine RPM for an extended period of time Overheating condition Damaged engine oil temperature (EOT) sensor or circuit (vehicles with an EOT sensor) Base engine concerns | ||
| Diagnostic Aids | The engine is operating in high RPM range due to improper gear selection. This may cause a lack/loss of power or surge customer concern. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DY . | ||
P0298 - ENGINE OIL OVER TEMPERATURE CONDITION
DTC P0300: RANDOM MISFIRE DETECTED
| Description | The random misfire DTC indicates multiple cylinders are misfiring or the powertrain control module (PCM) cannot identify which cylinder is misfiring. | ||
|---|---|---|---|
| Possible Causes | Camshaft position sensor (CMP) Low fuel (less than 1/8 tank) Stuck open EGR valve Blocked EGR passages | ||
| Diagnostic Aids | One or more EGR passages may be blocked or partially blocked. If this is the case the misfire detection monitor indicates the EGR port to check for possible blockage. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HD . | ||
P0300 - RANDOM MISFIRE DETECTED
DTC P0301 - P0309 : CYLINDER X MISFIRE DETECTED
| Description | NOTE: x represents cylinder number 1 through 9. The misfire detection monitor is designed to monitor engine misfire and identify the specific cylinder in which the misfire has occurred. Misfire is defined as lack of combustion in a cylinder due to absence of spark, poor fuel metering, poor compression, or any other cause. | ||
|---|---|---|---|
| Possible Causes | Ignition system Fuel injectors Running out of fuel EVAP canister purge valve Fuel pressure Evaporative emission system EGR system Base engine | ||
| Diagnostic Aids | The malfunction indicator lamp (MIL) blinks once per second when a misfire severe enough to cause catalyst damage is detected. If the MIL is on steady state due to a misfire, this indicates the threshold for emissions was exceeded and caused the vehicle to fail an inspection and maintenance tailpipe test. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HD . | ||
P030X - CYLINDER X MISFIRE DETECTED
DTC P0310: CYLINDER 10 MISFIRE DETECTED
| Description | See the description for DTC P030x. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P030x. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P030x. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HD . | ||
P0310 - CYLINDER 10 MISFIRE DETECTED
DTC P0315: CRANKSHAFT POSITION SYSTEM VARIATION NOT LEARNED
| Description | The powertrain control module (PCM) is unable to learn and correct for mechanical inaccuracies in crankshaft pulse wheel tooth spacing. This DTC disables the misfire monitor. | ||
|---|---|---|---|
| Possible Causes | Damaged crankshaft pulse wheel teeth Damaged crankshaft position (CKP) sensor | ||
| Diagnostic Aids | Requires visual inspection of the CKP sensor and the crankshaft pulse wheel teeth for damage. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HD . | ||
P0315 - CRANKSHAFT POSITION SYSTEM VARIATION NOT LEARNED
DTC P0316: MISFIRE DETECTED ON STARTUP (FIRST 1000 REVOLUTIONS)
| Description | P0316 code is set in addition to any type B misfire DTC which occurs in the first 1,000 revolution test interval following engine start. | ||
|---|---|---|---|
| Possible Causes | Damaged crankshaft position (CKP) sensor Ignition system Fuel injectors Running out of fuel Fuel quality Base engine Damaged powertrain control module (PCM) | ||
| Diagnostic Aids | Freeze frame data and the DTC P03xx are also stored, indicating in which cylinder the misfire occurred. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HD . | ||
P0316 - MISFIRE DETECTED ON STARTUP (FIRST 1000 REVOLUTIONS)
DTC P0320: IGNITION/DISTRIBUTOR ENGINE SPEED INPUT CIRCUIT
| Description | The ignition engine speed sensor input signal to PCM is continuously monitored. The test fails when the signal indicates that 2 successive erratic profile ignition pickup (PIP) pulses occurred. | ||
|---|---|---|---|
| Possible Causes | Loose wires/connectors Arcing secondary ignition components (coil, wires and plugs) On-board transmitter (2-way radio) | ||
| Diagnostic Aids | The DTC indicates that 2 successive erratic PIP pulses occurred. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test NC . | ||
P0320 - IGNITION/DISTRIBUTOR ENGINE SPEED INPUT CIRCUIT
DTC P0325: KNOCK SENSOR 1 CIRCUIT (BANK 1)
| Description | The knock sensor detects vibrations upon increase and decrease in engine RPM. The knock sensor generates a voltage based on this vibration. If the voltage goes outside a calibrated level, a DTC is set. | ||
|---|---|---|---|
| Possible Causes | Knock sensor circuit short to GND Knock sensor circuit short to voltage Knock sensor circuit open Damaged knock sensor | ||
| Diagnostic Aids | A knock sensor voltage greater than 0.5 volt with the key ON engine OFF indicates a concern is present. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DG . | GO to Pinpoint Test DG . | |
P0325 - KNOCK SENSOR 1 CIRCUIT (BANK 1)
DTC P0326: KNOCK SENSOR 1 CIRCUIT RANGE/PERFORMANCE (BANK 1)
P0326 - KNOCK SENSOR 1 CIRCUIT RANGE/PERFORMANCE (BANK 1)
DTC P0330: KNOCK SENSOR 2 CIRCUIT (BANK 2)
P0330 - KNOCK SENSOR 2 CIRCUIT (BANK 2)
DTC P0331: KNOCK SENSOR 2 CIRCUIT RANGE/PERFORMANCE (BANK 2)
P0331 - KNOCK SENSOR 2 CIRCUIT RANGE/PERFORMANCE (BANK 2)
DTC P0340: CAMSHAFT POSITION SENSOR A CIRCUIT (BANK 1 OR SINGLE SENSOR)
| Description | The test fails when the powertrain control module (PCM) can no longer detect the signal from the camshaft position (CMP) sensor on bank 1. | ||
|---|---|---|---|
| Possible Causes | CMP circuit open CMP circuit short to GND CMP circuit short to voltage SIG RTN open (VR sensor) CMP GND open (Hall-effect sensor) CMP circuit short to CMP2 circuit (if equipped) CMP incorrectly installed (Hall-effect sensor) Damaged CMP sensor shielding Damaged CMP sensor Damaged PCM | ||
| Diagnostic Aids | Harness routing, harness alterations, improper shielding, or electrical interference from other improperly functioning systems may have an intermittent impact on the CMP signal. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DR . | ||
P0340 - CAMSHAFT POSITION SENSOR A CIRCUIT (BANK 1 OR SINGLE SENSOR)
DTC P0344: CAMSHAFT POSITION SENSOR A CIRCUIT INTERMITTENT (BANK 1 OR SINGLE SENSOR)
| Description | The test fails when the powertrain control module (PCM) detects an intermittent signal from the camshaft position (CMP) sensor. | ||
|---|---|---|---|
| Possible Causes | Intermittent open circuit Intermittent short circuit Damaged sensor shielding Damaged sensor | ||
| Diagnostic Aids | Harness routing, harness alterations, improper shielding, or electrical interference from other improperly functioning systems may have an intermittent impact on the CMP signal. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DR . | ||
P0344 - CAMSHAFT POSITION SENSOR A CIRCUIT INTERMITTENT (BANK 1 OR SINGLE SENSOR)
DTC P0345: CAMSHAFT POSITION SENSOR A CIRCUIT (BANK 2)
| Description | The test fails when the powertrain control module (PCM) can no longer detect the signal from the camshaft position (CMP) sensor on bank 2. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0340. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0340. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DR . | ||
P0345 - CAMSHAFT POSITION SENSOR A CIRCUIT (BANK 2)
DTC P0349: CAMSHAFT POSITION SENSOR A CIRCUIT INTERMITTENT (BANK 2)
| Description | See the description for DTC P0344. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0344. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0344. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DR . | ||
P0349 - CAMSHAFT POSITION SENSOR A CIRCUIT INTERMITTENT (BANK 2)
DTC P0350: IGNITION COIL PRIMARY/SECONDARY CIRCUIT
| Description | Each ignition primary circuit is continuously monitored. The test fails when the powertrain control module (PCM) does not receive a valid ignition diagnostic monitor (IDM) pulse signal from the ignition module (integrated in the PCM). | ||
|---|---|---|---|
| Possible Causes | Open or short in the Ignition START/RUN circuit Open coil driver circuit Coil driver circuit shorted to ground Damaged coil Coil driver circuit shorted to VPWR | ||
| Diagnostic Aids | Use the 12-volt non-powered test lamp to verify START/RUN voltage at the ignition coil harness connector. Check the coil driver circuit for open, short to VPWR, or short to ground. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test JE . | ||
P0350 - IGNITION COIL PRIMARY/SECONDARY CIRCUIT
DTC P0351: IGNITION COIL A PRIMARY/SECONDARY CIRCUIT
| Description | See the description for DTC P0350. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0350. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0350. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Coil-on-plug (COP) ignition testing | GO to Pinpoint Test JF . | GO to Pinpoint Test JF . | |
| Coil pack ignition testing | GO to Pinpoint Test JE . | GO to Pinpoint Test JE . | |
P0351 - IGNITION COIL A PRIMARY/SECONDARY CIRCUIT
DTC P0352: IGNITION COIL B PRIMARY/SECONDARY CIRCUIT
| Description | See the description for DTC P0350. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0350. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0350. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Coil-on-plug (COP) ignition testing | GO to Pinpoint Test JF . | GO to Pinpoint Test JF . | |
| Coil pack ignition testing | GO to Pinpoint Test JE . | GO to Pinpoint Test JE . | |
P0352 - IGNITION COIL B PRIMARY/SECONDARY CIRCUIT
DTC P0353: IGNITION COIL C PRIMARY/SECONDARY CIRCUIT
| Description | See the description for DTC P0350. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0350. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0350. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Coil-on-plug (COP) ignition testing | GO to Pinpoint Test JF . | GO to Pinpoint Test JF . | |
| Coil pack ignition testing | GO to Pinpoint Test JE . | GO to Pinpoint Test JE . | |
P0353 - IGNITION COIL C PRIMARY/SECONDARY CIRCUIT
DTC P0354: IGNITION COIL D PRIMARY/SECONDARY CIRCUIT
| Description | See the description for DTC P0350. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0350. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0350. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Coil-on-plug (COP) ignition testing | GO to Pinpoint Test JF . | GO to Pinpoint Test JF . | |
| Coil pack ignition testing | GO to Pinpoint Test JE . | GO to Pinpoint Test JE . | |
P0354 - IGNITION COIL D PRIMARY/SECONDARY CIRCUIT
DTC P0355: IGNITION COIL E PRIMARY/SECONDARY CIRCUIT
P0355 - IGNITION COIL E PRIMARY/SECONDARY CIRCUIT
DTC P0356: IGNITION COIL F PRIMARY/SECONDARY CIRCUIT
P0356 - IGNITION COIL F PRIMARY/SECONDARY CIRCUIT
DTC P0357: IGNITION COIL G PRIMARY/SECONDARY CIRCUIT
P0357 - IGNITION COIL G PRIMARY/SECONDARY CIRCUIT
DTC P0358: IGNITION COIL H PRIMARY/SECONDARY CIRCUIT
P0358 - IGNITION COIL H PRIMARY/SECONDARY CIRCUIT
DTC P0359: IGNITION COIL I PRIMARY/SECONDARY CIRCUIT
P0359 - IGNITION COIL I PRIMARY/SECONDARY CIRCUIT
DTC P0360: IGNITION COIL J PRIMARY/SECONDARY CIRCUIT
P0360 - IGNITION COIL J PRIMARY/SECONDARY CIRCUIT
DTC P0400: EXHAUST GAS RECIRCULATION (EGR) FLOW
| Description | The electric EGR (EEGR) system is monitored once per drive cycle during steady state conditions above 77 km/h (48 mph). The test fails when a concern is detected by powertrain control module (PCM) calculations indicating the EGR flow is less or greater than expected. | ||
|---|---|---|---|
| Possible Causes | EEGR valve stuck open or closed Connector to EEGR not seated EEGR motor winding circuits short or open No voltage to the EEGR Harness open or shorted to voltage or ground Vacuum signal to manifold absolute pressure (MAP) restricted or leaking Mass air flow (MAF) sensor signal erroneous Carbon build up in the EEGR valve seat area One or more sensors is not responding or is out of range | ||
| Diagnostic Aids | All of the following sensors input data to the PCM for correct operation of the EEGR system: engine coolant temperature (ECT), crankshaft position (CKP), intake air temperature (IAT), MAF, throttle position (TP), MAP. Any DTC relating to these sensors must be resolved prior to addressing code P0400. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KD . | ||
P0400 - EXHAUST GAS RECIRCULATION (EGR) FLOW
DTC P0401: EXHAUST GAS RECIRCULATION (EGR) FLOW INSUFFICIENT DETECTED
| Description | The EGR system is monitored during steady state driving conditions while the EGR is commanded on. The test fails when the signal from the differential pressure feedback EGR (DPFEGR) sensor indicates that EGR flow is less than the desired minimum. | ||
|---|---|---|---|
| Possible Causes | Vacuum supply EGR valve stuck closed EGR valve leaks vacuum EGR flow path restricted EGRVR circuit shorted to voltage VREF open to DPFEGR sensor DPFEGR sensor downstream hose is off or plugged EGRVR circuit open to the PCM VPWR open to EGRVR solenoid DPFEGR sensor hoses are both off DPFEGR sensor hoses are reversed Damaged EGR orifice tube Damaged EGRVR solenoid | ||
| Diagnostic Aids | Carry out the key on engine running (KOER) self-test and look for DTC P1408 as an indication of a hard fault. If DTC P1408 is not present, look for contamination, restrictions, leaks, and intermittent concerns. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles with an EGR system module (ESM) | GO to Pinpoint Test HH . | ||
| All others | GO to Pinpoint Test HE . | ||
P0401 - EXHAUST GAS RECIRCULATION (EGR) FLOW INSUFFICIENT DETECTED
DTC P0402: EXHAUST GAS RECIRCULATION (EGR) FLOW EXCESSIVE DETECTED
| Description | The EGR system is monitored for undesired EGR flow during idle. The EGR monitor looks at the differential pressure feedback EGR (DPFEGR) signal at idle and compares it to the stored signal measured during key on engine off (KOEO). The test fails when the signal at idle is greater than at KOEO by a calibrated amount. | ||
|---|---|---|---|
| Possible Causes | EGR valve stuck open Plugged EGR vacuum regulator solenoid vent Plugged EGR tube Slow responding DPFEGR sensor Damaged DPFEGR sensor Incorrect vacuum hose connection Plugged vacuum hoses EGRVR circuit shorted to ground Damaged EGR vacuum regulator solenoid | ||
| Diagnostic Aids | A DPFEGR PID reading that is greater at idle than during KOEO by 0.5 volt or a rough engine idle may indicate a hard fault. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles with an EGR system module (ESM) | GO to Pinpoint Test HH . | GO to Pinpoint Test HH . | |
| All others | GO to Pinpoint Test HE . | GO to Pinpoint Test HE . | |
P0402 - EXHAUST GAS RECIRCULATION (EGR) FLOW EXCESSIVE DETECTED
DTC P0403: EXHAUST GAS RECIRCULATION (EGR) CONTROL CIRCUIT
| For Vehicles With an Electric EGR (EEGR) | |||
|---|---|---|---|
| Description | The EEGR system is continuously monitored to check the 4 EEGR motor coils, circuits, and the powertrain control module (PCM) for opens, shorts to voltage and ground. If a malfunction is detected the EEGR system is disabled and additional monitoring is suspended for the remainder of the drive until the next drive cycle. | ||
| Possible Causes | EEGR motor windings open Connector to EEGR not seated Open circuit in the harness from the PCM to the EEGR Short circuit in the EEGR motor Short circuit in the harness from the PCM to the EEGR Damaged PCM | ||
| Diagnostic Aids | |||
| For All Others | |||
| Description | This test checks the electrical function of the EGR vacuum regulator (EGRVR) solenoid. The test fails when the EGRVR circuit voltage is either too high or too low when compared to the expected voltage range. The EGR system must be enabled for the test to be completed. | ||
| Possible Causes | EGRVR circuit open VPWR open to EGRVR solenoid EVR circuit short to voltage or ground Damaged EGRVR solenoid Damaged powertrain control module (PCM) | ||
| Diagnostic Aids | The EGRVR solenoid resistance is between 26 and 40 ohms. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles with an EGR system module (ESM) | GO to Pinpoint Test HH . | ||
| Vehicles With an Electric EGR (EEGR) | GO to Pinpoint Test KD . | ||
| All others | GO to Pinpoint Test HE . | ||
P0403 - EXHAUST GAS RECIRCULATION (EGR) CONTROL CIRCUIT
DTC P0405: EXHAUST GAS RECIRCULATION (EGR) SENSOR A CIRCUIT LOW
| Description | The EGR monitor checks the differential pressure feedback EGR (DPFEGR) sensor signal to the powertrain control module (PCM) for low voltage. The test fails when the average voltage to the PCM drops to a voltage less than the minimum calibrated value. | ||
|---|---|---|---|
| Possible Causes | DPFE circuit short to ground Damaged DPFEGR sensor VREF short to ground | ||
| Diagnostic Aids | A DPFEGR PID reading less than 0.05 volt with the key ON, engine OFF or running indicates a hard fault. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles with an EGR system module (ESM) | GO to Pinpoint Test HH . | ||
| All others | GO to Pinpoint Test HE . | ||
P0405 - EXHAUST GAS RECIRCULATION (EGR) SENSOR A CIRCUIT LOW
DTC P0406: EXHAUST GAS RECIRCULATION (EGR) SENSOR A CIRCUIT HIGH
| Description | The EGR monitor checks the EGR sensor signal to the powertrain control module (PCM) for high voltage. The test fails when the average voltage to the PCM exceeds the maximum calibrated value. | ||
|---|---|---|---|
| Possible Causes | Differential pressure feedback EGR (DPFEGR) circuit open VREF short to voltage Damaged DPFEGR sensor DPFE circuit short to voltage SIG RTN circuit open | ||
| Diagnostic Aids | A DPFEGR PID reading greater than 4.5 volts with the key ON, engine OFF or running indicates a hard fault. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles with an EGR system module (ESM) | GO to Pinpoint Test HH . | ||
| All others | GO to Pinpoint Test HE . | ||
P0406 - EXHAUST GAS RECIRCULATION (EGR) SENSOR A CIRCUIT HIGH
DTC P0410: SECONDARY AIR INJECTION (AIR) SYSTEM
| Description | The AIR system detected a lack of air flow with the secondary AIR pump ON. | ||
|---|---|---|---|
| Possible Causes | AIR inlet hose leak. AIR inlet hose disconnected. | ||
| Diagnostic Aids | Measured air flow is less than expected. Visually inspect the secondary AIR inlet hose. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HM . | ||
P0410 - SECONDARY AIR INJECTION (AIR) SYSTEM
DTC P0412: SECONDARY AIR INJECTION (AIR) SYSTEM - SWITCHING VALVE A CIRCUIT
| Description | On the primary side of the AIR relay, open and short faults on the AIR command circuit are detected during normal operation by the powertrain control module (PCM) output driver. | ||
|---|---|---|---|
| Possible Causes | Short to voltage or ground in the AIR command circuit Open in the AIR command circuit AIR bypass solenoid fault AIR relay fault | ||
| Diagnostic Aids | For intermittent faults use the AIR PCM output driver fault PID (AIRF) during a harness wiggle test with the AIR PCM output driver in OFF and ON states. The AIR PCM output driver fault PID AIRF instantly detects open circuits and shorts to ground with the PCM output driver off. The AIR PCM output driver fault PID AIRF instantly detects open circuits and shorts to ground with the PCM output driver off. The AIR PCM output driver fault PID AIRF instantly detects a short to voltage or low resistance load with the PCM output driver on. Use the OTM to toggle the PCM output driver from OFF to ON. Refer to OUTPUT TEST MODE (OTM) . | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HM . | ||
P0412 - SECONDARY AIR INJECTION (AIR) SYSTEM - SWITCHING VALVE A CIRCUIT
DTC P0420: CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD (BANK 1)
| Description | Indicates the bank 1 catalyst system efficiency is below the acceptable threshold. | ||
|---|---|---|---|
| Possible Causes | Use of leaded fuel Damaged heated oxygen sensor (HO2S) Out of range engine coolant temperature (ECT) sensor High fuel pressure Damaged exhaust manifold Damaged catalytic converter Oil contamination Cylinder misfiring Downstream HO2S wires improperly connected Damaged exhaust system pipe Damaged muffler/tailpipe assembly Retarded spark timing Leaking fuel injector | ||
| Diagnostic Aids | Compare HO2S upstream HO2S11 and downstream HO2S12 switch rate and amplitude. Under normal closed loop fuel conditions, high efficiency catalysts have oxygen storage which makes the switching frequency of the downstream HO2S very slow and reduces the amplitude of those switches as compared to the upstream HO2S. As catalyst efficiency deteriorates, its ability to store oxygen declines and the downstream HO2S signal begins to switch more rapidly with increase amplitude, approaching the switching rate and amplitude of the upstream HO2S. Once beyond an acceptable limit the DTC is set. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HF . | ||
P0420 - CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD (BANK 1)
DTC P0430: CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD (BANK 2)
| Description | Indicates the bank 2 catalyst system efficiency is below the acceptable threshold. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0420. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0420. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HF . | ||
P0430 - CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD (BANK 2)
DTC P0442: EVAPORATIVE EMISSION SYSTEM LEAK DETECTED (SMALL LEAK)
| Description | The powertrain control module (PCM) monitors the complete evaporative emission (EVAP) control system for the presence of a small fuel vapor leak. System failure occurs when a fuel vapor leak from an opening as small as 1.016 mm (0.040 in) is detected by the EVAP running loss monitor test. | ||
|---|---|---|---|
| Possible Causes | After market EVAP hardware that does not conform to the required specifications Small holes or cuts in the fuel vapor hoses/tubes Canister vent solenoid stays partially open on closed command Damaged, missing or loosely installed fuel filler cap Loose fuel vapor hose/tube connections to the EVAP system components EVAP system component seals leaking at or near the EVAP canister purge valve, fuel tank pressure sensor, canister vent (CV) solenoid, fuel vapor control valve tube assembly or fuel vapor vent valve assembly | ||
| Diagnostic Aids | Check for a missing fuel filler cap or the integrity of the cap. Check for loose or damaged vapor hoses. Visually inspect the EVAP canister inlet port, CV solenoid filter, and canister vent hose assembly for contamination or debris. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HX . | ||
P0442 - EVAPORATIVE EMISSION SYSTEM LEAK DETECTED (SMALL LEAK)
DTC P0443: EVAPORATIVE EMISSION SYSTEM PURGE CONTROL VALVE CIRCUIT
| Description | The powertrain control module (PCM) monitors the state of the evaporative emission (EVAP) canister purge valve circuit output driver. The test fails when the signal moves outside the minimum or maximum limit for the commanded state. | ||
|---|---|---|---|
| Possible Causes | VPWR circuit open EVAP canister purge valve circuit shorted to GND Damaged EVAP canister purge valve EVAP canister purge valve circuit open EVAP canister purge valve circuit shorted to VPWR Damaged PCM | ||
| Diagnostic Aids | To verify normal function, monitor the EVAP canister purge valve signal PID EVAPPDC (or EVMV for electronic valve) and the signal voltage (PCM control side). With the valve closed, the EVAPPDC indicates a 0% duty cycle (0 mA for EVMV) and voltage approximately equal to battery voltage. When the valve is commanded fully open, EVAPPDC indicates 100% duty cycle (1000 mA for EVMV) and a voltage drop of 3 volts minimum is normal. Output test mode may be used to switch output on/off to verify function. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HX . | ||
P0443 - EVAPORATIVE EMISSION SYSTEM PURGE CONTROL VALVE CIRCUIT
DTC P0446: EVAPORATIVE EMISSION SYSTEM VENT CONTROL CIRCUIT
| Description | Monitors the canister vent (CV) solenoid circuit for an electrical failure. The test fails when the signal moves outside the minimum or maximum allowable calibrated parameters for a specified canister vent duty cycle by powertrain control module (PCM) command. | ||
|---|---|---|---|
| Possible Causes | VPWR circuit open KAPWR circuit open (vehicles equipped with engine off natural vacuum (EONV) EVAP leak check monitor) CV solenoid circuit shorted to PWR GND or CHASSIS GND Damaged CV solenoid CV solenoid circuit open CV solenoid circuit shorted to VPWR CV solenoid circuit shorted to KAPWR (vehicles equipped with engine off natural vacuum (EONV) EVAP leak check monitor) Damaged PCM | ||
| Diagnostic Aids | To verify normal functioning, monitor the EVAP canister vent solenoid signal PID EVAPCV and the signal voltage (PCM control side). With the valve open, EVAPCV indicates 0% duty cycle and a voltage approximately equal to battery voltage. When the valve is commanded fully closed, EVAPCV indicates 100% duty cycle, and a minimum voltage drop of 4 volts is normal. Output test mode may be used to switch output on/off to verify function. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HX . | ||
P0446 - EVAPORATIVE EMISSION SYSTEM VENT CONTROL CIRCUIT
DTC P0451: EVAPORATIVE EMISSION SYSTEM PRESSURE SENSOR/SWITCH RANGE/PERFORMANCE
| Description | Note: For some vehicle applications, DTC P0451 is set for a fuel tank pressure (FTP) sensor range (offset) concern. The DTC P0454 replaces the original P0451 for intermittent (noisy) sensor concerns. Until the phase in process is complete, noisy or offset FTP sensor concerns may set a P0451. The fuel tank pressure changes greater than 14 inches of water in 0.10 seconds. FTP sensor output is offset by + /- 1.7 inches H2O. | ||
|---|---|---|---|
| Possible Causes | Intermittent open or short in the FTP sensor or the FTP sensor signal Contaminated or damaged sensor Damaged powertrain control module (PCM) | ||
| Diagnostic Aids | Monitor the FTP PID and note if it changes from above 15 inches of water to below minus (-) 15 inches of water often in 1 minute. With the FTP sensor at atmospheric pressure, the FTP PID normally indicates 0 inches of H2O. Look for a minimum reading of +/- 1.7 inches of water as an indication of an offset condition. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HX . | ||
P0451 - EVAPORATIVE EMISSION SYSTEM PRESSURE SENSOR/SWITCH RANGE/PERFORMANCE
DTC P0452: EVAPORATIVE EMISSION SYSTEM PRESSURE SENSOR/SWITCH LOW
| Description | The powertrain control module (PCM) monitors the evaporative emission (EVAP) control system fuel tank pressure (FTP) sensor input signal to the PCM. The test fails when the signal average drops below a minimum allowable calibrated parameter. | ||
|---|---|---|---|
| Possible Causes | Contamination internal to the FTP sensor connector FTP circuit shorted to GND or SIG RTN Damaged FTP sensor | ||
| Diagnostic Aids | An FTP V PID reading less than 0.22 volt in key ON, engine OFF or key ON, engine running indicates a concern is present. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HX . | ||
P0452 - EVAPORATIVE EMISSION SYSTEM PRESSURE SENSOR/SWITCH LOW
DTC P0453: EVAPORATIVE EMISSION SYSTEM PRESSURE SENSOR/SWITCH HIGH
| Description | The powertrain control module (PCM) monitors the evaporative emission (EVAP) control system fuel tank pressure (FTP) sensor input signal to the PCM. The test fails when the signal average jumps above a minimum allowable calibrated parameter. | ||
|---|---|---|---|
| Possible Causes | FTP circuit open VREF shorted to VPWR FTP circuit shorted to VREF or VPWR SIG RTN circuit open Damaged FTP sensor | ||
| Diagnostic Aids | An FTP V PID reading greater than 4.50 volts in key ON, engine OFF or key ON, engine running indicates a concern is present. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HX . | ||
P0453 - EVAPORATIVE EMISSION SYSTEM PRESSURE SENSOR/SWITCH HIGH
DTC P0454: EVAPORATIVE EMISSION SYSTEM PRESSURE SENSOR/SWITCH INTERMITTENT
| Description | The fuel tank pressure changes greater than 14 inches of water in 0.10 seconds. | ||
|---|---|---|---|
| Possible Causes | Intermittent open or short in the fuel tank pressure (FTP) sensor or the FTP sensor signal Contaminated or damaged sensor | ||
| Diagnostic Aids | Monitor the FTP PID and note if it changes from above 15 inches of water to below minus (-) 15 inches of water often in 1 minute. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test Z . | ||
P0454 - EVAPORATIVE EMISSION SYSTEM PRESSURE SENSOR/SWITCH INTERMITTENT
DTC P0455: EVAPORATIVE EMISSION SYSTEM LEAK DETECTED (GROSS LEAK/NO FLOW)
| Description | The powertrain control module (PCM) monitors the complete evaporative emission (EVAP) control system for no purge flow, the presence of a large fuel vapor leak, or multiple small fuel vapor leaks. System failure occurs when no purge flow, which is attributed to fuel vapor blockages or restrictions, a large fuel vapor leak, or multiple fuel vapor leaks are detected by the EVAP running loss monitor test with the engine running, but not at idle. | ||
|---|---|---|---|
| Possible Causes | After market EVAP hardware that does not conform to the required specifications Disconnected or cracked fuel EVAP canister tube, EVAP canister purge outlet tube, or EVAP return tube EVAP canister purge valve stuck closed Damaged EVAP canister Damaged or missing fuel filler cap Insufficient fuel filler cap installation Loose fuel vapor hose/tube connections to the EVAP system components Blockages or restrictions in the fuel vapor hoses/tubes Fuel vapor control valve tube assembly or fuel vapor vent valve assembly blocked Canister vent (CV) solenoid stuck open Mechanically inoperative fuel tank pressure (FTP) sensor | ||
| Diagnostic Aids | Check for audible vacuum noise or significant fuel odor in the engine compartment or near the EVAP canister and fuel tank. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HX . | ||
P0455 - EVAPORATIVE EMISSION SYSTEM LEAK DETECTED (GROSS LEAK/NO FLOW)
DTC P0456: EVAPORATIVE EMISSION SYSTEM LEAK DETECTED (VERY SMALL LEAK)
| Description | The powertrain control module (PCM) monitors the complete evaporative emission (EVAP) control system for the presence of a very small fuel vapor leak. The system failure occurs when a fuel vapor leak from an opening as small as 0.508 mm (0.020 inch) is detected by the EVAP running loss monitor test. | ||
|---|---|---|---|
| Possible Causes | Very small holes or cuts in the fuel vapor hoses/tubes Loose fuel vapor hose/tube connections to the EVAP system components EVAP system component seals leaking. See the Possible Causes for DTC P0442 | ||
| Diagnostic Aids | Check for a missing fuel filler cap or the integrity of the cap. Check for loose or damaged vapor hoses. Visually inspect the EVAP canister inlet port, CV solenoid filter, and canister vent hose assembly for contamination or debris. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HX . | ||
P0456 - EVAPORATIVE EMISSION SYSTEM LEAK DETECTED (VERY SMALL LEAK)
DTC P0457: EVAPORATIVE EMISSION SYSTEM LEAK DETECTED (FUEL CAP LOOSE/OFF)
| Description | A fuel tank pressure change less than a minus (-) 7 inches of water in 30 seconds has occurred after refueling; or there is excessive purge, fuel vapor, flow greater than 0.06 lb/min (0.45 gm/s). | ||
|---|---|---|---|
| Possible Causes | Fuel filler cap not installed on refueling (storing continuous memory DTC) and the fuel cap indicator lamp (FCIL) may also be illuminated Damaged, missing, or loosely installed fuel filler cap | ||
| Diagnostic Aids | Check for a missing fuel filler cap or the integrity of the cap. If OK, clear continuous memory DTCs and reinitiate the EVAP emission running loss monitor drive cycle. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HX . | ||
P0457 - EVAPORATIVE EMISSION SYSTEM LEAK DETECTED (FUEL CAP LOOSE/OFF)
DTC P0460: FUEL LEVEL SENSOR A CIRCUIT
| Description | The powertrain control module (PCM) monitors the fuel level input (FLI) circuit or communications network message for a concern. The test fails when the PCM determines that the value of the FLI signal is stuck. The PCM calculates the amount of fuel used during operation. If the FLI signal does not change or does not correspond with the calculated fuel usage, the DTC is set. | ||
|---|---|---|---|
| Possible Causes | Stuck float arm Fuel level is always greater than 95% due to refueling patterns Fuel level is always less than 5% due to refueling patterns Fuel level is always at the same level between 3% and 97% full due to refueling patterns Fuel pump (FP) module concern Damaged instrument cluster | ||
| Diagnostic Aids | Check with the customer for driving and fueling habits that would keep the fuel level at approximately the same value. Monitor the FLI and FLI V PIDs while attempting to move the fuel level float by adding or removing fuel as necessary. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HX . | ||
P0460 - FUEL LEVEL SENSOR A CIRCUIT
DTC P0461: FUEL LEVEL SENSOR A CIRCUIT RANGE/PERFORMANCE
| Description | Excessive electrical noise. | ||
|---|---|---|---|
| Possible Causes | Fuel level sensor circuit intermittent FLI signal line open circuit | ||
| Diagnostic Aids | Verify after market equipment does not generate the radio frequency interference / electromagnetic interference (RFI/EMI) which may cause noisy FLI input signal. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HX . | ||
P0461 - FUEL LEVEL SENSOR A CIRCUIT RANGE/PERFORMANCE
DTC P0462: FUEL LEVEL SENSOR A CIRCUIT LOW
| Description | The powertrain control module (PCM) monitors the fuel level input (FLI) circuit for electrical failure. The test fails when the signal moves below the minimum allowable calibrated parameter for a specified fuel fill percentage in the fuel tank. | ||
|---|---|---|---|
| Possible Causes | Empty fuel tank Fuel pump (FP) module concern Incorrectly installed fuel gauge Damaged instrument cluster Damaged fuel gauge FLI circuit short to ground | ||
| Diagnostic Aids | Monitor the FLI and FLI V PIDs in key on, engine running (KOER). A concern is present if the FLI PID is at 25% fill and the FLI V PID is less than 0.90 volt with a non-matching fuel gauge or the FLI PID is at 75% fill and the FLI V PID is greater than 2.45 volts with a non-matching fuel gauge. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HX . | ||
P0462 - FUEL LEVEL SENSOR A CIRCUIT LOW
DTC P0463: FUEL LEVEL SENSOR A CIRCUIT HIGH
| Description | The powertrain control module (PCM) monitors the fuel level input (FLI) circuit for electrical failure. The test fails when the signal moves above the maximum allowable calibrated parameter for a specified fuel fill percentage in the fuel tank. | ||
|---|---|---|---|
| Possible Causes | Fuel pump (FP) module concern Incorrectly installed fuel gauge Damaged instrument cluster FLI circuit open FLI shorted to VPWR CASE GND circuit open Overfilled fuel tank Damaged fuel gauge | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0462. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HX . | ||
P0463 - FUEL LEVEL SENSOR A CIRCUIT HIGH
DTC P0480: FAN 1 CONTROL CIRCUIT
| For Relay Controlled Electric Cooling Fan | |||
|---|---|---|---|
| Description | Monitors the LFC primary circuit output from the powertrain control (PCM). The test fails when the PCM grounds the LFC circuit and excessive current draw is detected on the LFC circuit; or with the LFC circuit not grounded by the PCM the voltage is not detected on the LFC circuit (the PCM expects to detect VPWR voltage coming through the low speed FC relay coil to the LFC circuit). | ||
| Possible Causes | Open or shorted LFC circuit Open VPWR circuit to the low speed FC relay Damaged low speed FC relay | ||
| Diagnostic Aids | When the LFCF PID reads YES, a concern is currently present. During the key on engine off (KOEO) self-test, the cooling fan is cycled on and off. A short to voltage can only be detected when the PCM is grounding the LFC circuit. During the KOEO and key on engine running (KOER) self-test, the LFC circuit is cycled on and off. | ||
| For Variable Speed Electric Cooling Fan | |||
| Description | This test checks the fan control-variable (FCV) output circuit. The DTC sets if the powertrain control module (PCM) detects the voltage on the FCV circuit is not within the expected range. | ||
| Possible Causes | FCV circuit open or shorted B+ or ground circuit concern to cooling fan VPWR open to cooling fan (if applicable) Damaged cooling fan module | ||
| Diagnostic Aids | During the key on engine off (KOEO) self-test, the cooling fan is cycled on and off. | ||
| For Cooling Fan Clutch | |||
| Description | This test checks the fan control-variable (FCV) output circuit for the cooling fan clutch. The diagnostic trouble code (DTC) sets if the powertrain control module (PCM) detects the voltage on the FCV circuit is not within the expected range. | ||
| Possible Causes | FCV circuit open in the harness FCV circuit short to voltage or ground in the harness Damaged cooling fan clutch solenoid. | ||
| Diagnostic Aids | During the key on engine off (KOEO) self-test, the cooling fan is cycled on and off. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Crown Victoria, Five Hundred, Freestyle, Fusion, Grand Marquis, LS, Milan, Montego, Town Car, Zephyr | GO to Pinpoint Test KN . | ||
| Cooling Clutch | Fan GO to Pinpoint Test HV . | ||
| All others | GO to Pinpoint Test KF . | ||
P0480 - FAN 1 CONTROL CIRCUIT
DTC P0481: HIGH FAN CONTROL (HFC)/FAN CONTROL 3 (FC3) PRIMARY CIRCUIT MALFUNCTION
| Description | Monitors the HFC primary circuit output from the powertrain control module (PCM). The test fails, when the HFC output is commanded on (grounded) and excessive current draw is detected on the HFC circuit; or when the HFC circuit is commanded off and voltage is not detected on the HFC circuit (the PCM expects to detect VPWR voltage through the high speed FC relay coil to the HFC circuit). | ||
|---|---|---|---|
| Possible Causes | Open or shorted HFC circuit Open VPWR circuit to the high speed FC relay Damaged high speed FC relay | ||
| Diagnostic Aids | When the HFCF PID reads YES, a concern is currently present. An open circuit or short to ground can only be detected when the PCM is not grounding the HFC circuit. A short to voltage can only be detected when the PCM is grounding the HFC circuit. During the key on engine off (KOEO) and key on engine running (KOER) self-test, the HFC circuit is cycled on and off. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KF . | ||
P0481 - HIGH FAN CONTROL (HFC)/FAN CONTROL 3 (FC3) PRIMARY CIRCUIT MALFUNCTION
DTC P0482: MEDIUM FAN CONTROL (MFC)/ FAN CONTROL 2 (FC2) PRIMARY CIRCUIT FAILURE
| Description | Monitors the MFC primary circuit output from the powertrain control module (PCM). The test fails, when the MFC output is commanded on (grounded) and excessive current draw is detected on the MFC circuit; or when the MFC circuit is commanded off and voltage is not detected on the MFC circuit (the PCM expects to detect IGN START/RUN voltage through the medium speed FC relay coil to the MFC circuit). | ||
|---|---|---|---|
| Possible Causes | Open or shorted MFC circuit Open IGN START/RUN circuit to the medium speed FC relay Damaged medium speed FC relay | ||
| Diagnostic Aids | When the MFCF PID reads YES, a concern is currently present. An open circuit or short to ground can only be detected when the PCM is not grounding the MFC circuit. A short to voltage can only be detected when the PCM is grounding the MFC circuit. During the key on engine off (KOEO) and key on engine running (KOER) self-test, the MFC circuit is cycled on and off. Use output test mode to command the low speed/high speed fan on. The PCM also activates the medium speed fan output. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KF . | ||
P0482 - MEDIUM FAN CONTROL (MFC)/ FAN CONTROL 2 (FC2) PRIMARY CIRCUIT FAILURE
DTC P0483: VARIABLE FAN CONTROL (FC V) FAN PERFORMANCE
| Description | The fan control module, referred to as the cooling fan motor, indicates a cooling fan motor stall or cooling fan motor overheat condition. | ||
|---|---|---|---|
| Possible Causes | Cooling fan motor mechanical concerns Obstructions | ||
| Diagnostic Aids | Check for a mechanical concern with the cooling fan motor or for obstructions limiting the cooling fan motor operation. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KN . | ||
P0483 - VARIABLE FAN CONTROL (FC V) FAN PERFORMANCE
DTC P0491: SECONDARY AIR INJECTION (AIR) SYSTEM INSUFFICIENT FLOW (BANK 1)
| Description | The AIR system detected that there was insufficient mass air flow change during pump switching (ON/OFF). | ||
|---|---|---|---|
| Possible Causes | Secondary AIR pump with no or low air flow. Secondary AIR bypass solenoid leaking/blocked or stuck open/closed. Secondary AIR diverter valve leaking/blocked or stuck open/closed. Secondary AIR air hose restricted. Secondary AIR vacuum hoes restricted or leaking. | ||
| Diagnostic Aids | Measured air flow is less than expected. Visually inspect the secondary AIR inlet hose. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HM . | GO to Pinpoint Test HM . | |
P0491 - SECONDARY AIR INJECTION (AIR) SYSTEM INSUFFICIENT FLOW (BANK 1)
DTC P0500: VEHICLE SPEED SENSOR (VSS) A
| Description | Indicates the powertrain control module (PCM) detected an error in the vehicle speed information. Vehicle speed data is received from either the vehicle speed sensor (VSS), the transfer case speed sensor (TCSS) or the anti-lock brake system (ABS) control module. If the engine RPM is above the torque converter stall speed (automatic transmission) and the engine load is high, it can be inferred that the vehicle must be moving. If there is insufficient vehicle speed data input, a concern is indicated and a DTC is set. On most vehicle applications the malfunction indicator lamp (MIL) is illuminated when this DTC is set. | ||
|---|---|---|---|
| Possible Causes | Open in the VSS+/VSS- harness circuit Open in the TCSS signal or the TCSS signal return harness circuit Short to GND in the VSS harness circuit Short to GND in the TCSS harness circuit Short to PWR in the VSS harness circuit Short to PWR in the TCSS harness circuit Damaged drive mechanism for VSS or TCSS Damaged VSS or TCSS Damaged wheel speed sensors Damaged wheel speed sensor harness circuits Damage in the module(s) connected to the VSC/VSS circuit Open or short in the vehicle speed circuit VSS signal between the ABS VSS signal output and the VSS signal inputs to the PCM and other modules (F-Super Duty) | ||
| Diagnostic Aids | Monitor the VSS PID while driving the vehicle. This DTC is set when the PCM detects a sudden loss of vehicle speed signal over a period of time. If vehicle speed data is lost, check the source of the vehicle speed input: VSS, TCSS or ABS. Note: On some manual shift-on-the-fly (MSOF) applications, VSS and TCSS PID can be monitored. However if no TCSS PID is available and VSS PID is zero, TCSS circuitry frequency must be checked for loss of sensor signal. If another vehicle electronic module has generated the P0500 and the vehicle does not receive its vehicle speed input from the VSS, TCSS or ABS, check the PCM for output shaft speed (OSS) sensor DTCs. On OSS applications the PCM uses the OSS to calculate the vehicle speed. If no OSS DTCs are found check for correct PCM configuration, tire size and axle ratio. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| F-Super Duty | GO to Pinpoint Test DF . | ||
| Vehicles with an automatic transmission and output shaft speed (OSS) sensor DTCs | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
| All others | GO to Pinpoint Test DP . | ||
P0500 - VEHICLE SPEED SENSOR (VSS) A
DTC P0503: VEHICLE SPEED SENSOR (VSS) A INTERMITTENT/ERRATIC/HIGH
| Description | Indicates poor or noisy VSS performance. Vehicle speed data is received from either the VSS, the transfer case speed sensor (TCSS), or the anti-lock brake system (ABS) control module. | ||
|---|---|---|---|
| Possible Causes | Noisy VSS/TCSS input signal from the radio frequency interference / electromagnetic interference (RFI/EMI) external sources, such as ignition components or the charging circuit Damaged VSS or driven gears Damaged TCSS Damaged wiring harness or connectors Malfunction in the module(s) or circuit connected to the VSS/TCSS circuit After market add-on | ||
| Diagnostic Aids | Monitor the VSS PID while driving the vehicle, and check for intermittent vehicle speed indication. Verify the ignition and charging systems are functioning correctly. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| F-Super Duty | GO to Pinpoint Test DF . | ||
| Five Hundred, Freestyle, Montego, Navigator | The powertrain control module (PCM) uses information from the anti-lock brake system (ABS) module and the transmission control module (TCM) to calculate vehicle speed. Check these modules for DTCs. | ||
| Vehicles with an automatic transmission and output shaft speed (OSS) sensor DTCs | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
| All others | GO to Pinpoint Test DP . | ||
P0503 - VEHICLE SPEED SENSOR (VSS) A INTERMITTENT/ERRATIC/HIGH
DTC P0505: IDLE AIR CONTROL (IAC) SYSTEM
| For Vehicles With Electronic Throttle Control (ETC) | |||
|---|---|---|---|
| Description | The powertrain control module (PCM) attempts to control engine speed during the key on, engine running (KOER) self-test. The test fails when the desired RPM could not be reached or controlled during the self-test. | ||
| Possible Causes | Failure mode effects management (FMEM) condition is present Air inlet is plugged Vacuum leaks Damaged electronic throttle body (ETB) Damaged PCM | ||
| Diagnostic Aids | This DTC is informational only and it may be accompanied by other DTCs. Diagnose other DTCs first. If other DTCs are not present inspect the intake air system for air restrictions, vacuum leaks, and damage. If no concerns are present, clear the DTC and repeat the self-test. | ||
| For All Others | |||
| Description | The powertrain control module (PCM) attempts to control engine speed during the key on, engine running (KOER) self-test. The test fails when the desired RPM could not be reached or controlled during the self-test. | ||
| Possible Causes | IAC circuit open VPWR to IAC solenoid open B+ or VPWR to IAC solenoid open Air inlet is plugged IAC circuit shorted to PWR Damaged IAC valve | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles With Electronic Throttle Control (ETC) | Refer to the Description, Possible Causes and Diagnostic Aids for the DTC. | ||
| All others | GO to Pinpoint Test KE . | ||
P0505 - IDLE AIR CONTROL (IAC) SYSTEM
DTC P0506: IDLE AIR CONTROL (IAC) SYSTEM RPM LOWER THAN EXPECTED
| For Vehicles With Electronic Throttle Control (ETC) | |||
|---|---|---|---|
| Description | This DTC is set when the powertrain control module (PCM) detects an engine idle speed that is less than the desired RPM. | ||
| Possible Causes | Air intake restriction Exhaust restriction Engine mechanical concern Damaged electronic throttle body (ETB) Damaged PCM | ||
| Diagnostic Aids | This DTC is informational only and it may be accompanied by other DTCs. Diagnose other DTCs first. If other DTCs are not present inspect the intake air system for air restrictions and damage. If no concerns are present, clear the DTC and repeat the self-test. | ||
| For All Others | |||
| Description | This DTC is set when the powertrain control module (PCM) detects an engine idle speed that is less than the desired RPM. | ||
| Possible Causes | IAC circuit open Air inlet is plugged B+ or VPWR to IAC solenoid open Damaged or incorrect IAC valve IAC valve stuck closed VPWR to IAC solenoid open IAC circuit shorted to PWR | ||
| Diagnostic Aids | Disconnect the IAC valve and look for little or no change in engine RPM as an indication of a stuck or damaged valve. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles With Electronic Throttle Control (ETC) | Refer to the Description, Possible Causes and Diagnostic Aids for the DTC. | ||
| All others | GO to Pinpoint Test KE . | ||
P0506 - IDLE AIR CONTROL (IAC) SYSTEM RPM LOWER THAN EXPECTED
DTC P0507: IDLE AIR CONTROL (IAC) SYSTEM RPM HIGHER THAN EXPECTED
| For Vehicles With Electronic Throttle Control (ETC) | |||
|---|---|---|---|
| Description | This DTC is set when the powertrain control module (PCM) detects an engine idle speed that is greater than the desired RPM. | ||
| Possible Causes | Air intake leak after throttle body Vacuum leaks Damaged EVAP system EGR valve leaks vacuum Damaged electronic throttle body (ETB) Damaged PCM | ||
| Diagnostic Aids | This DTC is informational only and it may be accompanied by other DTCs. Diagnose other DTCs first. If other DTCs are not present inspect the intake air system for air or vacuum leaks and damage. If no concerns are present, clear the DTC and repeat the self-test. | ||
| For All Others | |||
| Description | This DTC is set when the powertrain control module (PCM) detects an engine idle speed that is greater than the desired RPM. | ||
| Possible Causes | IAC circuit shorted to ground Damaged or incorrect IAC valve IAC valve stuck open Air intake leak after throttle body Vacuum leaks Damaged EVAP system EGR valve leaks vacuum | ||
| Diagnostic Aids | Disconnect the IAC valve and look for little or no change in engine RPM as an indication of a stuck or damaged valve. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles With Electronic Throttle Control (ETC) | Refer to the Description, Possible Causes and Diagnostic Aids for the DTC. | ||
| All others | GO to Pinpoint Test KE . | ||
P0507 - IDLE AIR CONTROL (IAC) SYSTEM RPM HIGHER THAN EXPECTED
DTC P050A: COLD START IDLE AIR CONTROL PERFORMANCE
| Description | The cold start emission reduction monitor has detected an airflow performance deficiency. The cold start emission reduction monitor validates the operation of the components of the system required to achieve the cold start emission reduction strategy, retarded spark timing (P050B) and elevated idle airflow (P050A). When the idle airflow test portion of the cold start emission reduction strategy is enabled, the idle air control system will request a higher idle RPM to increase the engine airflow. The cold start emission reduction monitor compares the actual airflow measured by the MAF sensor to the requested PCM airflow. The DTC is set when the airflow is less than the calibrated limit. | ||
|---|---|---|---|
| Possible Causes | Damaged air intake system tubes Restricted air filter Restricted or blocked idle air control or intake passages Air or vacuum leaks Base engine problem | ||
| Diagnostic Aids | This DTC is an informational DTC and may be accompanied by other DTCs. Diagnose other DTCs first. If other DTCs are not present inspect the intake air system for air restrictions and damage. If no concerns are present, clear the DTCs and repeat the self-test. The cold start emission reduction monitor runs during a cold start. Before repeating the self-test, a 2 to 3 hour soak period is required for the cold start emission reduction monitor to run at start up. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the Description, Possible Causes and Diagnostic Aids for the DTC. | ||
P050A - COLD START IDLE AIR CONTROL PERFORMANCE
DTC P050B: COLD START IGNITION TIMING PERFORMANCE
| Description | The cold start ignition timing performance has a functional response test of actual spark timing angle actual versus commanded spark timing in the powertrain control module (PCM). | ||
|---|---|---|---|
| Possible Causes | Spark timing Spark capture circuit Spark timing monitor Spark capture circuit monitor | ||
| Diagnostic Aids | Diagnose all other powertrain related DTCs first. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles with coil pack ignition system | GO to Pinpoint Test JC . | ||
| All others | GO to Pinpoint Test JB . | ||
P050B - COLD START IGNITION TIMING PERFORMANCE
DTC P0511: IDLE AIR CONTROL (IAC) CIRCUIT
| Description | This DTC is set when the powertrain control module (PCM) detects an electrical load failure on the IAC output circuit. | ||
|---|---|---|---|
| Possible Causes | IAC circuit open VPWR to IAC solenoid open B+ or VPWR to IAC solenoid open IAC circuit shorted to PWR Damaged IAC valve IAC circuit short to GND | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KE . | ||
P0511 - IDLE AIR CONTROL (IAC) CIRCUIT
DTC P0528: FAN SPEED SENSOR CIRCUIT NO SIGNAL
| Description | The powertrain control module (PCM) uses the fan speed sensor (FSS) input to monitor the cooling fan clutch speed. If the indicated fan speed is lower than the calibrated value during the key on engine running (KOER) self-test, the diagnostic trouble code (DTC) is set. | ||
|---|---|---|---|
| Possible Causes | FSS VPWR circuit open in the harness FSS PWRGND circuit open in the harness FSS circuit open in the harness FSS circuit short to voltage or ground in the harness Damaged FSS sensor Damaged PCM | ||
| Diagnostic Aids | Visually inspect the cooling fan clutch for damage or obstruction. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HV . | ||
P0528 - FAN SPEED SENSOR CIRCUIT NO SIGNAL
DTC P0532: AIR CONDITIONING PRESSURE (ACP) SENSOR LOW VOLTAGE DETECTED
| Description | The ACP sensor inputs a voltage to the powertrain control module (PCM). If the voltage is below the calibrated level the DTC sets. | ||
|---|---|---|---|
| Possible Causes | ACP circuit short to GND or SIGRTN VREF circuit open Open ACP circuit Damaged ACP sensor | ||
| Diagnostic Aids | Verify the VREF voltage is between 4 and 6 volts. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DS . | ||
P0532 - AIR CONDITIONING PRESSURE (ACP) SENSOR LOW VOLTAGE DETECTED
DTC P0533: AIR CONDITIONING PRESSURE (ACP) SENSOR HIGH VOLTAGE DETECTED
| Description | The ACP sensor inputs a voltage to the powertrain control module (PCM). If the voltage is above a calibrated level the DTC sets. | ||
|---|---|---|---|
| Possible Causes | ACP sensor circuit short to PWR ACP circuit open ACP circuit short to VREF Damaged ACP sensor | ||
| Diagnostic Aids | Verify the VREF voltage is between 4 and 6 volts. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DS . | ||
P0533 - AIR CONDITIONING PRESSURE (ACP) SENSOR HIGH VOLTAGE DETECTED
DTC P0534: LOW A/C CYCLING PERIOD
| Description | Indicates frequent A/C compressor clutch cycling. | ||
|---|---|---|---|
| Possible Causes | Mechanical A/C system concern (such as low refrigerant charge, damaged A/C cycling switch) Intermittent open between the cycling pressure switch and the powertrain control module (PCM) Intermittent open in the IGN RUN circuit to cycling pressure switch (if applicable) | ||
| Diagnostic Aids | This test is designed to protect the transmission. In some strategies, the PCM unlocks the torque converter during A/C clutch engagement. If a concern is present that results in frequent A/C clutch cycling, damage could occur if the torque converter is cycled at these intervals. This test detects this condition, sets the DTC and prevents the torque converter from excessive cycling. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KM . | ||
P0534 - LOW A/C CYCLING PERIOD
DTC P0537: A/C EVAPORATOR TEMPERATURE (ACET) CIRCUIT LOW INPUT
| Description | Indicates the ACET signal input was less than the self-test minimum. The self-test minimum is 0.13 volts. | ||
|---|---|---|---|
| Possible Causes | ACET circuit short to ground or SIG RTN Damaged ACET sensor | ||
| Diagnostic Aids | The powertrain control module (PCM) sources a low current 5 volts on the ACET circuit (this voltage can be measured with the sensor disconnected). As the A/C evaporator air temperature changes, the ACET circuit resistance to SIG RTN (ground) changes (which changes the voltage the PCM detects). When the ACET signal is detected below the self-test minimum, check for shorts to the SIG RTN or ground, which would pull the voltage low. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DJ . | ||
P0537 - A/C EVAPORATOR TEMPERATURE (ACET) CIRCUIT LOW INPUT
DTC P0538: A/C EVAPORATOR TEMPERATURE (ACET) CIRCUIT HIGH INPUT
| Description | Indicates the ACET signal input was greater than the self-test maximum. The self-test maximum is 4.5 volts. | ||
|---|---|---|---|
| Possible Causes | ACET circuit open SIG RTN circuit open to the ACET sensor ACET circuit short to voltage (VREF) Damaged ACET sensor | ||
| Diagnostic Aids | The powertrain control module (PCM) sources a low current 5 volts on the ACET circuit (this voltage can be measured with the sensor disconnected). As the A/C evaporator air temperature changes, the ACET circuit resistance to SIG RTN (ground) changes (which changes the voltage the PCM detects). When the ACET signal is detected above the self-test maximum, check for open circuits (ACET or SIG RTN), which would cause the voltage to remain high. Although not as probable, also check for a short to voltage (VREF). | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DJ . | ||
P0538 - A/C EVAPORATOR TEMPERATURE (ACET) CIRCUIT HIGH INPUT
DTC P0552: POWER STEERING PRESSURE (PSP) SENSOR/SWITCH CIRCUIT LOW
| Description | Indicates the PSP sensor input signal was less than the self-test minimum. | ||
|---|---|---|---|
| Possible Causes | PSP sensor damaged SIG RTN circuit open VREF circuit open or shorted PSP sensor signal circuit open or shorted | ||
| Diagnostic Aids | View the PSP PID to monitor the PSP input. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DT . | ||
P0552 - POWER STEERING PRESSURE (PSP) SENSOR/SWITCH CIRCUIT LOW
DTC P0553: POWER STEERING PRESSURE (PSP) SENSOR CIRCUIT HIGH INPUT
| Description | Indicates the PSP sensor input signal was greater than the self-test maximum. | ||
|---|---|---|---|
| Possible Causes | PSP sensor damaged VREF circuit shorted to voltage PSP sensor signal circuit open PSP sensor signal circuit shorted to voltage | ||
| Diagnostic Aids | View the PSP PID to monitor the PSP input. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DT . | ||
P0553 - POWER STEERING PRESSURE (PSP) SENSOR CIRCUIT HIGH INPUT
DTC P0579: CRUISE CONTROL MULTIFUNCTION INPUT A CIRCUIT RANGE / PERFORMANCE
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate SPEED CONTROL article . | ||
P0579 - CRUISE CONTROL MULTIFUNCTION INPUT A CIRCUIT RANGE / PERFORMANCE
DTC P0581: CRUISE CONTROL MULTIFUNCTION INPUT A CIRCUIT HIGH
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate SPEED CONTROL article . | ||
P0581 - CRUISE CONTROL MULTIFUNCTION INPUT A CIRCUIT HIGH
DTC P0600: SERIAL COMMUNICATION LINK
| Description | Indicates an error occurred in the powertrain control module (PCM). This DTC may be set alone or in combination with P2105. | ||
|---|---|---|---|
| Possible Causes | Damaged PCM | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test QE . | ||
P0600 - SERIAL COMMUNICATION LINK
DTC P0602: POWERTRAIN CONTROL MODULE (PCM) PROGRAMMING ERROR
| Description | This DTC indicates a programming error within the vehicle ID (VID) block. | ||
|---|---|---|---|
| Possible Causes | VID data corrupted by the diagnostic tool during VID reprogramming | ||
| Diagnostic Aids | Using the diagnostic tool, reprogram the VID block. If the PCM does not allow reprogramming of the VID block, reprogram the PCM. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | The VID block must be programmed. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) . | ||
P0602 - POWERTRAIN CONTROL MODULE (PCM) PROGRAMMING ERROR
DTC P0603: INTERNAL CONTROL MODULE KEEP ALIVE MEMORY (KAM) ERROR
| Description | Indicates the powertrain control module (PCM) has experienced an internal memory concern. However, there are external items that can cause this DTC. | ||
|---|---|---|---|
| Possible Causes | Reprogramming Battery terminal corrosion KAPWR to PCM interrupt/open Loose battery connection | ||
| Diagnostic Aids | If KAPWR is interrupted to the PCM because of a battery or PCM disconnect, this DTC can be generated on the first power-up. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test QB . | GO to Pinpoint Test QB . | |
P0603 - INTERNAL CONTROL MODULE KEEP ALIVE MEMORY (KAM) ERROR
DTC P0604: INTERNAL CONTROL MODULE RANDOM ACCESS MEMORY (RAM) ERROR
| Description | Indicates the powertrain control module (PCM) RAM has been corrupted. | ||
|---|---|---|---|
| Possible Causes | Module reprogramming Aftermarket performance products. Damaged PCM | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Reprogram or update the calibration. Check for other DTCs or drive symptoms for further action. Make sure to check for aftermarket performance products before installing a new PCM. If it is necessary to install a new PCM, refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) . | ||
P0604 - INTERNAL CONTROL MODULE RANDOM ACCESS MEMORY (RAM) ERROR
DTC P0605: INTERNAL CONTROL MODULE READ ONLY MEMORY (ROM) ERROR
| Description | The powertrain control module (PCM) ROM has been corrupted. | ||
|---|---|---|---|
| Possible Causes | An attempt was made to change the calibration Module programming error Damaged PCM | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Reprogram or update the calibration. Reprogram the vehicle identification VID block (use as built data). Check for other DTCs or drive symptoms for further action. Make sure to check for aftermarket performance products before installing a new powertrain control module (PCM). If it is necessary to install a new PCM, refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) . | ||
P0605 - INTERNAL CONTROL MODULE READ ONLY MEMORY (ROM) ERROR
DTC P0606: POWERTRAIN CONTROL MODULE (PCM) PROCESSOR
| Description | P0606 indicates a register readback (PCM internal communications) error. | ||
|---|---|---|---|
| Possible Causes | Damaged PCM | ||
| Diagnostic Aids | For electronic throttle control (ETC) applications, an internal PCM concern, or an ETC system failure mode effect management (FMEM) condition exists. Diagnose other DTCs first. For all others, an internal PCM concern may be present. For both applications if only DTC P0606 is present, clear the DTCs. Repeat the self-test. Repair as necessary. If DTC P0606 is retrieved again, install a new PCM. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) . | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles With Electronic Throttle Control (ETC) | The DTC is an indication of a failure mode in the electronic throttle control system, which includes the accelerator pedal position (APP) sensor, electronic throttle body (ETB), and PCM. It is accompanied by other DTCs which provide repair direction. Diagnose and repair those DTCs, and the DTC P0606 will not be reset. If only DTC P0606 is present, clear the DTCs. Repeat the self-test. If DTC P0606 is retrieved again, install a new PCM. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) . | ||
| All others | Reprogram or update the calibration. Check for other DTCs and diagnose those first. Make sure to check for aftermarket performance products before installing a new PCM. Clear the DTCs, repeat the self-test. If the DTC is retrieved again, install a new PCM. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) . | ||
P0606 - POWERTRAIN CONTROL MODULE (PCM) PROCESSOR
DTC P0607: CONTROL MODULE PERFORMANCE
| Description | Indicates that the powertrain control module (PCM) internal central processing unit (CPU) has encountered an error. The PCM monitors itself and carries out internal checks of its own CPU. If any of these checks returns an incorrect value, the diagnostic trouble code (DTC) is set. | ||
|---|---|---|---|
| Possible Causes | Module programming error. Aftermarket performance products. Damaged PCM | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Reprogram or update the calibration. Check for other DTCs or drive symptoms for further action. Make sure to check for aftermarket performance products before installing a new PCM. If it is necessary to install a new PCM, refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) . | ||
P0607 - CONTROL MODULE PERFORMANCE
DTC P060A: INTERNAL CONTROL MODULE MONITORING PROCESSOR PERFORMANCE
| Description | Indicates an error occurred in the powertrain control module (PCM). This DTC is set in combination with P2105. | ||
|---|---|---|---|
| Possible Causes | Software incompatibility issue Damaged PCM | ||
| Diagnostic Aids | Verify the PCM is at the latest calibration level. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test QE . | ||
P060A - INTERNAL CONTROL MODULE MONITORING PROCESSOR PERFORMANCE
DTC P060B: INTERNAL CONTROL MODULE A/D PROCESSING PERFORMANCE
| Description | Indicates an error occurred in the powertrain control module (PCM). This DTC is set in combination with P2104 or P2110. | ||
|---|---|---|---|
| Possible Causes | Damaged PCM | ||
| Diagnostic Aids | Inspect the harness for damage. Verify correct operation of the sensors using VREF and related circuits. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test QE . | ||
P060B - INTERNAL CONTROL MODULE A/D PROCESSING PERFORMANCE
DTC P060C: INTERNAL CONTROL MODULE MAIN PROCESSOR PERFORMANCE
| Description | Indicates an error occurred in the powertrain control module (PCM). | ||
|---|---|---|---|
| Possible Causes | Software incompatibility issue Damaged PCM | ||
| Diagnostic Aids | Verify the PCM is at the latest calibration level. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test QE . | ||
P060C - INTERNAL CONTROL MODULE MAIN PROCESSOR PERFORMANCE
DTC P0611: FUEL INJECTOR CONTROL MODULE PERFORMANCE
| Description | This DTC is set when the powertrain control module (PCM) fails to receive a status message from the fuel injector interface module within a defined amount of time. | ||
|---|---|---|---|
| Possible Causes | PWR GND circuit open VPWR circuit open SCP communication link Damaged fuel injector interface module | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P0611 - FUEL INJECTOR CONTROL MODULE PERFORMANCE
DTC P061B: INTERNAL CONTROL MODULE TORQUE CALCULATION PERFORMANCE
| Description | Indicates a calculation error occurred in the powertrain control module (PCM). | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P2106. | ||
| Diagnostic Aids | Check for sensor and circuit related DTCs. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test QE . | ||
P061B - INTERNAL CONTROL MODULE TORQUE CALCULATION PERFORMANCE
DTC P061C: INTERNAL CONTROL MODULE ENGINE RPM PERFORMANCE
| Description | Indicates a calculation error occurred in the powertrain control module (PCM). | ||
|---|---|---|---|
| Possible Causes | CKP sensor circuit is open or shorted CKP sensor circuit intermittent Damaged CKP sensor CMP sensor circuit is open or shorted CMP sensor circuit intermittent Damaged CMP sensor Damaged PCM | ||
| Diagnostic Aids | Verify correct operation of the CKP and CMP sensors and related circuits. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test QE . | ||
P061C - INTERNAL CONTROL MODULE ENGINE RPM PERFORMANCE
DTC P061D: INTERNAL CONTROL MODULE ENGINE AIR MASS PERFORMANCE
| Description | Indicates an error occurred in the powertrain control module (PCM). | ||
|---|---|---|---|
| Possible Causes | Software incompatibility issue Damaged PCM | ||
| Diagnostic Aids | Verify the PCM is at the latest calibration level. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test QE . | ||
P061D - INTERNAL CONTROL MODULE ENGINE AIR MASS PERFORMANCE
DTC P061F: INTERNAL CONTROL MODULE THROTTLE ACTUATOR CONTROLLER PERFORMANCE
| Description | Indicates an error occurred in the powertrain control module (PCM). | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P2106. | ||
| Diagnostic Aids | Verify correct operation of the ETC components and related circuits. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test QE . | ||
P061F - INTERNAL CONTROL MODULE THROTTLE ACTUATOR CONTROLLER PERFORMANCE
DTC P0620: GENERATOR CONTROL CIRCUIT
| Description | The powertrain control module (PCM) reads the GENLI and sends a DTC through the network when the GENLI indicates a concern. | ||
|---|---|---|---|
| Possible Causes | I-line control (ILC) circuit short to ground ILC circuit short to voltage ILC circuit open GENLI circuit short to voltage or ground GENLI circuit open B+ circuit open Generator drive mechanism Damaged generator/regulator assembly Damaged PCM | ||
| Diagnostic Aids | Verify the battery voltage is 14.5 volts. Verify the generator/regulator has the correct part number. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HY . | ||
P0620 - GENERATOR CONTROL CIRCUIT
DTC P0622: GENERATOR FIELD TERMINAL CIRCUIT
| Description | The powertrain control module (PCM) monitors the generator load from the generator/regulator in the form of frequency. The frequency range is determined by the temperature of the voltage regulator, where 97% indicates a full load, and less than 6% indicates no load. | ||
|---|---|---|---|
| Possible Causes | GENLI circuit short to voltage or ground GENLI circuit open GENRC circuit short to voltage or ground GENRC circuit open ILC circuit short to voltage or ground ILC circuit open Battery-sense circuit open Generator drive mechanism Damaged generator/regulator assembly Damaged PCM | ||
| Diagnostic Aids | Verify the battery voltage is 14.5 volts. Verify the generator/regulator has the correct part number. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HY . | ||
P0622 - GENERATOR FIELD TERMINAL CIRCUIT
DTC P0625: GENERATOR FIELD TERMINAL CIRCUIT LOW
| Description | The powertrain control module (PCM) monitors generator load from the generator/regulator in the form of frequency. The concern indicates the input is lower than the load should be in normal operation. The load input could be low when no generator output exists. | ||
|---|---|---|---|
| Possible Causes | GENRC circuit short to ground GENLI circuit short to ground Open B+ wire during operation Low system voltage Broken generator belt Damaged generator/regulator assembly | ||
| Diagnostic Aids | Verify the battery voltage is 14.5 volts. Verify the generator/regulator has the correct part number. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HY . | ||
P0625 - GENERATOR FIELD TERMINAL CIRCUIT LOW
DTC P0626: GENERATOR FIELD TERMINAL CIRCUIT HIGH
| Description | The powertrain control module (PCM) monitors generator load from the generator/regulator in the form of frequency. The concern indicates the input is higher than the load should be in normal operation. The load input could be high when a battery short to ground exists. | ||
|---|---|---|---|
| Possible Causes | GENLI circuit short to voltage GENRC circuit short to voltage B+ open prior to start-up Open GENRC prior to start-up Open ILC prior to start-up | ||
| Diagnostic Aids | Verify the battery voltage is 14.5 volts. Verify the generator/regulator has the correct part number. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HY . | ||
P0626 - GENERATOR FIELD TERMINAL CIRCUIT HIGH
DTC P062C: INTERNAL CONTROL MODULE VEHICLE SPEED PERFORMANCE
| Description | Indicates an error occurred in the powertrain control module (PCM). | ||
|---|---|---|---|
| Possible Causes | Module communications network concerns Output shaft speed (OSS) sensor concern Turbine shaft speed (TSS) sensor concern Anti-lock brake system (ABS) concern | ||
| Diagnostic Aids | Repair any ABS DTCs, ABS-related DTCs in other modules, or vehicle communication concerns. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test QE . | ||
P062C - INTERNAL CONTROL MODULE VEHICLE SPEED PERFORMANCE
DTC P0645: AIR CONDITIONING CLUTCH RELAY (A/CCR) PRIMARY CIRCUIT MALFUNCTION
| Description | Monitors the A/CCR circuit output from the powertrain control module (PCM). The test fails when the PCM grounds the A/CCR circuit, excessive current draw is detected on the A/CCR circuit; or, with the A/CCR circuit not grounded by the PCM, voltage is not detected on the A/CCR circuit (the PCM expects to detect VPWR voltage coming through the A/CCR relay coil to the A/CCR circuit). | ||
|---|---|---|---|
| Possible Causes | Open or shorted A/CCR circuit Damaged A/CCR relay Open VPWR circuit to the A/CCR relay | ||
| Diagnostic Aids | The A/CCR control circuit can be monitored using the WACF and WAC PID. When the WACF PID reads YES, a concern is present. An open circuit or short to ground can only be detected when the PCM is not grounding the circuit. A short to voltage can only be detected when the PCM is grounding the circuit. During the key on engine off (KOEO) and key on engine running (KOER) self-test, the WAC circuit is cycled on and off. Verify the A/C and the defrost were OFF during the KOEO and KOER self-tests. Check ACCS the PID to verify. If the vehicle is not equipped with A/C, DTC P0645 can be ignored. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KM . | ||
P0645 - AIR CONDITIONING CLUTCH RELAY (A/CCR) PRIMARY CIRCUIT MALFUNCTION
DTC P0657: ACTUATOR SUPPLY VOLTAGE A CIRCUIT/OPEN
| Description | Voltage to all transmission solenoids has been interrupted. | ||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P0657 - ACTUATOR SUPPLY VOLTAGE A CIRCUIT/OPEN
DTC P0660: INTAKE MANIFOLD TUNING VALVE (IMTV) CONTROL CIRCUIT OPEN - BANK 1
| Description | The IMTV system is monitored for failure during continuous, key on engine off (KOEO), or key on engine running (KOER) self-tests. The test fails when the signal is more or less than an expected calibrated range. | ||
|---|---|---|---|
| Possible Causes | IMTV signal circuit open, shorted to PWR GND or SIG RTN Damaged IMTV actuator | ||
| Diagnostic Aids | An IMTVM PID reading may indicate a fault. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | ||
P0660 - INTAKE MANIFOLD TUNING VALVE (IMTV) CONTROL CIRCUIT OPEN - BANK 1
DTC P0685: ELECTRONIC CONTROL MODULE (ECM)/POWERTRAIN CONTROL MODULE (PCM) POWER RELAY CONTROL CIRCUIT/OPEN
| Description | This diagnostic trouble code (DTC) sets when the ignition switch position run (ISP-R) circuit indicates the ignition key is in OFF, ACC, or LOCK position, and the amount of time the PCM remains powered through the PCM power relay exceeds a predetermined amount of time. | ||
|---|---|---|---|
| Possible Causes | PCM relay control (PCMRC) circuit short to ground in the harness Damaged PCM power relay | ||
| Diagnostic Aids | Ability to communicate with the PCM when the ignition key is in the OFF, ACC, or LOCK position indicates a hard fault. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test B . | ||
P0685 - ELECTRONIC CONTROL MODULE (ECM)/POWERTRAIN CONTROL MODULE (PCM) POWER RELAY CONTROL CIRCUIT/OPEN
DTC P0689: ELECTRONIC CONTROL MODULE (ECM)/POWERTRAIN CONTROL MODULE (PCM) POWER RELAY SENSE CIRCUIT LOW
| Description | This diagnostic trouble code (DTC) sets when the passive anti theft system (PATS) system indicates the ignition key is in ON or START position and the ignition switch position run (ISP-R) circuit indicates OFF, ACC, or LOCK position. | ||
|---|---|---|---|
| Possible Causes | Ignition circuit fuse ISP-R circuit open in the harness ISP-R circuit short to ground in the harness Damaged ignition switch Damaged PATS system | ||
| Diagnostic Aids | Diagnose and repair all PATS DTCs first. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test B . | ||
P0689 - ELECTRONIC CONTROL MODULE (ECM)/POWERTRAIN CONTROL MODULE (PCM) POWER RELAY SENSE CIRCUIT LOW
DTC P0690: ELECTRONIC CONTROL MODULE (ECM)/POWERTRAIN CONTROL MODULE (PCM) POWER RELAY SENSE CIRCUIT HIGH
| Description | This diagnostic trouble code (DTC) sets when the passive anti theft system (PATS) system indicates the ignition key is in OFF, ACC, or LOCK position and the ignition switch position run (ISP-R) circuit indicates ON or START position. | ||
|---|---|---|---|
| Possible Causes | ISP-R circuit short to voltage in the harness Damaged PATS system Damaged ignition switch | ||
| Diagnostic Aids | Diagnose and repair all PATS DTCs first. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test B . | ||
P0690 - ELECTRONIC CONTROL MODULE (ECM)/POWERTRAIN CONTROL MODULE (PCM) POWER RELAY SENSE CIRCUIT HIGH
DTC P0703: BRAKE SWITCH B INPUT CIRCUIT
| Description | Indicates the powertrain control module (PCM) did not receive a brake pedal position (BPP) input. | ||
|---|---|---|---|
| Possible Causes | Open or short in the BPP circuit Open or short in the stoplamp circuits Damage in module(s) connected to the BPP circuit. Damaged brake switch Misadjusted brake switch | ||
| Diagnostic Aids | Check for proper function of the stoplamps. Using a diagnostic tool, check the BPP PID. The stoplamps and PID should toggle on and off with brake pedal activation. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Freestar/Monterey, Town Car | Verify the brake pedal was applied and released during the key on engine running (KOER) selftest. For additional concerns, refer to the appropriate EXTERIOR LIGHTING article . | ||
| Expedition, Navigator | Verify the brake pedal was applied and released during the key on engine running (KOER) selftest. For additional concerns, refer to the appropriate VEHICLE DYNAMIC SYSTEMS article . | ||
| All others | GO to Pinpoint Test FD . | ||
P0703 - BRAKE SWITCH B INPUT CIRCUIT
DTC P0704: CLUTCH PEDAL POSITION (CPP) SWITCH MALFUNCTION
| Description | When the clutch pedal is applied the voltage goes to low. If the powertrain control module (PCM) does not see this change from high to low the DTC is set. | ||
|---|---|---|---|
| Possible Causes | CPP circuit short to voltage Damaged CPP switch CPP circuit open in the SIGRTN | ||
| Diagnostic Aids | When the clutch pedal is applied and then released, the CPP switch voltage should cycle. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test TA . | GO to Pinpoint Test TA . | |
P0704 - CLUTCH PEDAL POSITION (CPP) SWITCH MALFUNCTION
DTC P0705: TRANSMISSION RANGE SENSOR A CIRCUIT (PRNDL) INPUT
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P0705 - TRANSMISSION RANGE SENSOR A CIRCUIT (PRNDL) INPUT
DTC P0707: TRANSMISSION RANGE SENSOR A CIRCUIT LOW
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P0707 - TRANSMISSION RANGE SENSOR A CIRCUIT LOW
DTC P0708: TRANSMISSION RANGE SENSOR A CIRCUIT HIGH
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P0708 - TRANSMISSION RANGE SENSOR A CIRCUIT HIGH
DTC P071X: TRANSMISSION CODE
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P071X - TRANSMISSION CODE
DTC P0720: OUTPUT SHAFT SPEED (OSS) SENSOR CIRCUIT
| Description | The OSS sensor inputs a signal to the powertrain control module (PCM) based on the speed of the output shaft of the transmission. | ||
|---|---|---|---|
| Possible Causes | OSS sensor circuit short to GND OSS sensor circuit short to PWR OSS sensor circuit open Damaged OSS sensor | ||
| Diagnostic Aids | Verify the sensor signal output varies with the vehicle speed. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Manual transmission | GO to Pinpoint Test DP . | ||
| All others | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P0720 - OUTPUT SHAFT SPEED (OSS) SENSOR CIRCUIT
DTC P0721: OUTPUT SHAFT SPEED (OSS) SENSOR CIRCUIT RANGE/PERFORMANCE
| Description | The OSS sensor signal is very sensitive to noise. This noise distorts the input to the powertrain control module (PCM). | ||
|---|---|---|---|
| Possible Causes | Wiring misrouted Aftermarket add-on Wiring damaged Wiring insulation wear | ||
| Diagnostic Aids | Check the routing of the harness. Check the wiring and the connector for damage. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Manual transmission | GO to Pinpoint Test DP . | ||
| All others | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P0721 - OUTPUT SHAFT SPEED (OSS) SENSOR CIRCUIT RANGE/PERFORMANCE
DTC P0722: OUTPUT SHAFT SPEED (OSS) SENSOR CIRCUIT NO SIGNAL
| Description | The OSS sensor failed to provide a signal to the PCM upon initial movement of vehicle. | ||
|---|---|---|---|
| Possible Causes | Damaged OSS connector Damaged OSS sensor, or not installed properly Harness intermittently shorted or open | ||
| Diagnostic Aids | Check the wiring, connector, and sensor for damage. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Manual transmission | GO to Pinpoint Test DP . | ||
| All others | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P0722 - OUTPUT SHAFT SPEED (OSS) SENSOR CIRCUIT NO SIGNAL
DTC P0723: OUTPUT SHAFT SPEED (OSS) SENSOR CIRCUIT INTERMITTENT
| Description | The OSS sensor signal to the PCM is irregular or interrupted. | ||
|---|---|---|---|
| Possible Causes | Harness connector not properly seated Harness intermittently shorted or open Harness connector damaged OSS sensor damaged, or not installed properly | ||
| Diagnostic Aids | Verify harness and connector integrity. Verify proper installation of the OSS sensor. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Manual transmission | GO to Pinpoint Test DP . | ||
| All others | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P0723 - OUTPUT SHAFT SPEED (OSS) SENSOR CIRCUIT INTERMITTENT
DTC P073X: TRANSMISSION CODE
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P073X - TRANSMISSION CODE
DTC P074X: TRANSMISSION CODE
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P074X - TRANSMISSION CODE
DTC P075X: TRANSMISSION CODE
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P075X - TRANSMISSION CODE
DTC P076X: TRANSMISSION CODE
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P076X - TRANSMISSION CODE
DTC P077X: TRANSMISSION CODE
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P077X - TRANSMISSION CODE
DTC P078X: TRANSMISSION CODE
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P078X - TRANSMISSION CODE
DTC P079X: TRANSMISSION CODE
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P079X - TRANSMISSION CODE
DTC P0815: UPSHIFT SWITCH CIRCUIT
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P0815 - UPSHIFT SWITCH CIRCUIT
DTC P0830: CLUTCH PEDAL SWITCH A CIRCUIT
| Description | The powertrain control module (PCM) monitors the clutch pedal position bottom of travel (CPP-BT) switch only during the calibrated engine speed range (cranking speed range). This DTC is set when the CPP-BT switch does not indicate that the clutch is disengaged (clutch pedal pressed) when the engine is cranked. | ||
|---|---|---|---|
| Possible Causes | Damaged CPP-BT switch Damaged CPP-BT harness Open PWRGND circuit to the CPP-BT switch Vehicle push-started with the clutch engaged (clutch pedal released) Aftermarket remote starting device | ||
| Diagnostic Aids | Verify that the vehicle was not push-started with the clutch engaged. Check for aftermarket equipment such as remote starting devices which may bypass the clutch pedal position switch when cranking the engine. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| F-150 4.2L | GO to Pinpoint Test TA . | ||
| All others | Refer to the appropriate STARTING SYSTEM article to diagnose the symptom no start, no crank. | ||
P0830 - CLUTCH PEDAL SWITCH A CIRCUIT
DTC P0833: CLUTCH PEDAL SWITCH B CIRCUIT
| Description | The powertrain control module (PCM) monitors the clutch pedal position top of travel (CPP-TT) switch only during the calibrated engine speed range (cranking speed range). This DTC is set when the CPP-TT does not indicate that the clutch is disengaged (clutch pedal pressed) when the engine is cranked. | ||
|---|---|---|---|
| Possible Causes | Damaged CPP-TT switch Damaged CPP-TT harness Open PWRGND circuit to the CPP-TT switch Vehicle push-started with the clutch engaged (clutch pedal released) Aftermarket remote starting device | ||
| Diagnostic Aids | Verify that the vehicle was not push-started with the clutch engaged. Check for aftermarket equipment such as remote starting devices which may bypass the clutch pedal position switch when cranking the engine. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate SPEED CONTROL article . | ||
P0833 - CLUTCH PEDAL SWITCH B CIRCUIT
DTC P0840: TRANSMISSION FLUID PRESSURE SENSOR/SWITCH A CIRCUIT
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P0840 - TRANSMISSION FLUID PRESSURE SENSOR/SWITCH A CIRCUIT
DTC P09XX: TRANSMISSION CODE
Note. 'x' equals any number 0 through 9 or letter A through F.
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P09XX - TRANSMISSION CODE
DTC P1000: ON-BOARD DIAGNOSTIC (OBD) SYSTEMS READINESS TEST NOT COMPLETE
| Description | The OBD monitors are carried out during the OBD drive cycle. P1000 is stored in continuous memory if any of the OBD monitors do not carry out their full diagnostic check. | ||
|---|---|---|---|
| Possible Causes | The vehicle is new from the factory Battery or powertrain control module (PCM) had recently been disconnected An OBD monitor concern occurred before completion of an OBD drive cycle PCM DTCs have recently been cleared with a diagnostic tool Power take off (PTO) circuit concern or PTO is on during testing. | ||
| Diagnostic Aids | The P1000, inspection/maintenance (I/M) readiness function is part of the PCM strategy. A battery disconnection or clearing codes using a diagnostic tool results in the various I/M readiness bits being set to a not-ready condition. As each non-continuous OBD monitor completes a full diagnostic check, the I/M readiness bit associated with that monitor is set to a ready condition. This may take 1 or 2 drive cycles based on whether concerns are detected or not. The readiness bits for comprehensive component monitoring, misfire, and fuel system monitoring are considered complete once all the non-continuous monitors have been evaluated. Because the EVAP and secondary air injection (AIR) system monitors require certain ambient conditions to run, special logic can bypass the monitor for the purpose of clearing the EVAP/secondary AIR system I/M readiness bit, due to continued presence of these extreme conditions. P1000 does not need to be cleared from the PCM except to pass an I/M test. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | See (1) | See (1) | GO to Pinpoint Test QC . |
| (1) DTC P1000 is ignored in the key on engine off (KOEO) and key on engine running (KOER) self-tests. Disregard DTC P1000 and continue as directed. | |||
| (1) | DTC P1000 is ignored in the key on engine off (KOEO) and key on engine running (KOER) self-tests. Disregard DTC P1000 and continue as directed. |
P1000 - ON-BOARD DIAGNOSTIC (OBD) SYSTEMS READINESS TEST NOT COMPLETE
DTC P1001: KEY ON ENGINE RUNNING (KOER) NOT ABLE TO COMPLETE, KOER ABORTED
| Description | This non-malfunction indicator lamp (MIL) code is set when the KOER self-test does not complete in the time intended. | ||
|---|---|---|---|
| Possible Causes | Incorrect self-test procedure Unexpected response from the self-test monitors RPM out of specification | ||
| Diagnostic Aids | Carry out the KOEO self-test. Refer to STEP 1: POWERTRAIN CONTROL MODULE (PCM) QUICK TEST . | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the Description, Possible Causes and Diagnostic Aids for the DTC. | ||
P1001 - KEY ON ENGINE RUNNING (KOER) NOT ABLE TO COMPLETE, KOER ABORTED
DTC P1100: MASS AIR FLOW (MAF) SENSOR CIRCUIT INTERMITTENT
| Description | The MAF sensor circuit is monitored by the powertrain control module (PCM) for sudden voltage (or air flow) input change through the comprehensive component monitor (CCM). If during the last 40 warm-up cycles in key on, engine running (KOER) the PCM detects a voltage (or air flow) change beyond the minimum or maximum calibrated limit, a continuous memory DTC is stored. | ||
|---|---|---|---|
| Possible Causes | Poor continuity through the MAF sensor connectors Poor continuity through the MAF sensor harness Intermittent open or short inside the MAF sensor. | ||
| Diagnostic Aids | While accessing the MAF V PID on the diagnostic tool, lightly tap on the MAF sensor or wiggle the MAF sensor connector and harness. If the MAF V PID suddenly changes below 0.23 volt or above 4.60 volts, an intermittent fault is indicated. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DC . | ||
P1100 - MASS AIR FLOW (MAF) SENSOR CIRCUIT INTERMITTENT
DTC P1101: MASS AIR FLOW (MAF) SENSOR OUT OF SELF-TEST RANGE
| Description | The MAF sensor circuit is monitored by the powertrain control module (PCM) for an out of range air flow (or voltage) input. If, during key on engine off (KOEO), the air flow voltage signal is greater than 0.27 volt the test fails. Likewise, if, during key on engine running (KOER), the air flow voltage signal is not within 0.46 volt to 2.44 volts, the test fails. | ||
|---|---|---|---|
| Possible Causes | Low battery charge MAF sensor partially connected MAF sensor contamination PWR GND open to the MAF sensor MAF RTN circuit open to PCM Damaged MAF sensor | ||
| Diagnostic Aids | A MAF V PID reading greater than 0.27 volt (KOEO) or a MAF V PID reading outside the 0.46 volt to 2.44 volts range (KOER) indicates a hard fault. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DC . | GO to Pinpoint Test DC . | |
P1101 - MASS AIR FLOW (MAF) SENSOR OUT OF SELF-TEST RANGE
DTC P1112: INTAKE AIR TEMPERATURE (IAT) CIRCUIT INTERMITTENT
| Description | Indicates the IAT sensor signal was intermittent. | ||
|---|---|---|---|
| Possible Causes | Damaged harness Damaged sensor Damaged harness connector | ||
| Diagnostic Aids | Monitor the IAT on a diagnostic tool. Look for sudden changes in the reading when the harness is wiggled or the sensor is tapped. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DA . | ||
P1112 - INTAKE AIR TEMPERATURE (IAT) CIRCUIT INTERMITTENT
DTC P1114: INTAKE AIR TEMPERATURE 2 (IAT2) CIRCUIT LOW (SUPERCHARGED/TURBOCHARGED ENGINES)
| Description | Indicates the sensor signal is less than the self-test minimum. The IAT2 sensor minimum is 0.2 volt. | ||
|---|---|---|---|
| Possible Causes | Grounded circuit in the harness Incorrect harness connection Damaged sensor | ||
| Diagnostic Aids | Monitor the IAT2 PID value. A typical IAT2 temperature should be greater than the IAT1 temperature. Refer to REFERENCE VALUES . | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DU . | ||
P1114 - INTAKE AIR TEMPERATURE 2 (IAT2) CIRCUIT LOW (SUPERCHARGED/TURBOCHARGED ENGINES)
DTC P1115: INTAKE AIR TEMPERATURE 2 (IAT2) CIRCUIT HIGH (SUPERCHARGED/TURBOCHARGED ENGINES)
| Description | Indicates the sensor signal is greater than the self-test maximum. The IAT2 sensor maximum is 4.6 volts. | ||
|---|---|---|---|
| Possible Causes | Open circuit in the harness Sensor signal short to voltage Incorrect harness connection Damaged sensor | ||
| Diagnostic Aids | Monitor the IAT2 PID value. A typical IAT2 temperature should be greater than the IAT1 temperature. Refer to REFERENCE VALUES . | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DU . | ||
P1115 - INTAKE AIR TEMPERATURE 2 (IAT2) CIRCUIT HIGH (SUPERCHARGED/TURBOCHARGED ENGINES)
DTC P1116: ENGINE COOLANT TEMPERATURE (ECT) SENSOR OUT OF SELF-TEST RANGE
| Description | Indicates the ECT sensor is out of self-test range. The correct range is 0.3 to 3.7 volts. | ||
|---|---|---|---|
| Possible Causes | Overheating condition Malfunctioning thermostat Damaged ECT sensor Low engine coolant Damaged harness connector | ||
| Diagnostic Aids | The ECT must be greater than 10°C (50°F) to pass the key on engine off (KOEO) self-test and greater than 82°C (180°F) to pass the key on engine running (KOER) self-test. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles with only a (CHT) sensor | GO to Pinpoint Test DL . | GO to Pinpoint Test DL . | |
| All others | GO to Pinpoint Test DX . | GO to Pinpoint Test DX . | |
P1116 - ENGINE COOLANT TEMPERATURE (ECT) SENSOR OUT OF SELF-TEST RANGE
DTC P1117: ENGINE COOLANT TEMPERATURE (ECT) SENSOR CIRCUIT INTERMITTENT
| Description | Indicates the ECT circuit became intermittently open or shorted while the engine was running. | ||
|---|---|---|---|
| Possible Causes | Damaged harness Damaged sensor Damaged harness connector Low engine coolant | ||
| Diagnostic Aids | Monitor the ECT on a diagnostic tool. Look for sudden changes in the reading when the harness is wiggled or the sensor is tapped. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DX . | ||
P1117 - ENGINE COOLANT TEMPERATURE (ECT) SENSOR CIRCUIT INTERMITTENT
DTC P1120: THROTTLE POSITION SENSOR A OUT OF RANGE LOW (RATCH TOO LOW)
| Description | The throttle position (TP) sensor circuit is monitored by the powertrain control module (PCM) for a low TP rotation angle or voltage input below the closed throttle position through the comprehensive component monitor (CCM). The test fails if the TP rotation angle or voltage remains within the calibrated self-test range, but falls between 3.42-9.85% (0.17-0.49 volt). | ||
|---|---|---|---|
| Possible Causes | TP circuit with frayed wires Corrosion or loose connection on the TP circuit connectors and pins VREF open to TP sensor VREF short to SIG RTN | ||
| Diagnostic Aids | A TP PID (TP V PID) between 3.42 and 9.85% (0.17 and 0.49 volt) in key ON, engine OFF or key ON, engine running indicates a concern is present. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DH . | ||
P1120 - THROTTLE POSITION SENSOR A OUT OF RANGE LOW (RATCH TOO LOW)
DTC P1124: THROTTLE POSITION SENSOR A OUT OF SELF-TEST RANGE
| Description | The throttle position (TP) sensor circuit is monitored by the powertrain control module (PCM) for an out of range TP rotation angle or voltage input. The test fails if the TP rotation angle or voltage reading is less than 13.27% (0.66 volt) or greater than 23.52% (1.17 volts). | ||
|---|---|---|---|
| Possible Causes | Binding or bent throttle linkage TP sensor not seated properly Throttle plate below closed throttle position Throttle plate/screw misadjusted Damaged TP sensor | ||
| Diagnostic Aids | The TP PID reading not between 13.27-23.52% (0.66-1.17 volts) in key ON, engine OFF or key ON, engine running indicates a concern is present. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DH . | GO to Pinpoint Test DH . | |
P1124 - THROTTLE POSITION SENSOR A OUT OF SELF-TEST RANGE
DTC P1125: THROTTLE POSITION SENSOR A INTERMITTENT
| Description | The throttle position (TP) sensor circuit is monitored by the powertrain control module (PCM) for sudden TP rotation angle or voltage input change through the comprehensive component monitor (CCM). If during the last 80 warm-up cycles in key ON, engine running the PCM detects TP rotation angle or voltage changes beyond the minimum or maximum calibrated limit, a continuous DTC is stored. | ||
|---|---|---|---|
| Possible Causes | Poor continuity through the TP sensor connectors Poor continuity through the TP harness Intermittent open or short inside the TP sensor | ||
| Diagnostic Aids | While accessing the TP V PID on the diagnostic tool, lightly tap on the TP sensor or wiggle the TP sensor connector and harness. If the TP V PID suddenly changes below 0.49 volt or above 4.65 volts, an intermittent concern is present. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DH . | ||
P1125 - THROTTLE POSITION SENSOR A INTERMITTENT
DTC P1127: EXHAUST TEMPERATURE OUT OF RANGE, O2 SENSOR TESTS NOT COMPLETED
| Description | The heated oxygen sensor (HO2S) monitor uses an exhaust temperature model to determine when the HO2S heaters are cycled ON. The test fails when the inferred exhaust temperature is below a minimum calibrated value. | ||
|---|---|---|---|
| Possible Causes | Engine not operating long enough prior to carrying out the key on engine running (KOER) selftest Exhaust system too cool | ||
| Diagnostic Aids | Monitor the HO2S heater PIDs to determine their ON/OFF state. DTC P1127 is present if the exhaust is not hot. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DW . | ||
P1127 - EXHAUST TEMPERATURE OUT OF RANGE, O2 SENSOR TESTS NOT COMPLETED
DTC P1156: FUEL SELECT SWITCH CIRCUIT
| Description | This DTC is set when the operating mode reported by the fuel injector interface module does not agree with the operating mode requested by the powertrain control module (PCM). | ||
|---|---|---|---|
| Possible Causes | Open or shorted fuel select switch (FSSW) circuit Damaged fuel injector interface module | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P1156 - FUEL SELECT SWITCH CIRCUIT
DTC P115E: THROTTLE ACTUATOR CONTROL (TAC) THROTTLE BODY AIR FLOW TRIM AT MAX LIMIT
| Description | During idle, the powertrain control module (PCM) monitors the throttle angle and air flow. If the air flow is determined to be less than expected, the PCM adjusts the throttle angle to compensate. The air flow reduction is typically the result of sludge buildup around the throttle plate. This DTC indicates the PCM has reached the maximum allowed compensation and is no longer able to compensate for the buildup. | ||
|---|---|---|---|
| Possible Causes | Sludge around the throttle plate | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Install a new ETB. Refer to the appropriate FUEL CHARGING & CONTROLS article . | ||
P115E - THROTTLE ACTUATOR CONTROL (TAC) THROTTLE BODY AIR FLOW TRIM AT MAX LIMIT
DTC P117A: ENGINE OIL OVER TEMPERATURE - FORCED LIMITED POWER
| Description | Indicates the engine oil protection strategy is enabled when the engine oil temperature (EOT) reaches a predetermined level in the PCM. The PCM then limits the engine RPMs until the EOT returns to normal. | ||
|---|---|---|---|
| Possible Causes | Engine overheating Low engine coolant Loaded weight is greater than the maximum vehicle weight rating. Refer to Owners Literature for vehicle weight ratings. | ||
| Diagnostic Aids | This DTC is an informational DTC and may be set by an engine overheating concern. If the engine overheats, check the cooling system. Refer to the appropriate ENGINE COOLING article for cooling system diagnosis. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the Description, Possible Causes and Diagnostic Aids for the DTC. | ||
P117A - ENGINE OIL OVER TEMPERATURE - FORCED LIMITED POWER
DTC P1184: ENGINE OIL TEMPERATURE (EOT) SENSOR OUT OF SELF-TEST RANGE
| Description | Indicates the EOT signal was out of self-test range. | ||
|---|---|---|---|
| Possible Causes | Damaged harness Damaged sensor Damaged harness connector | ||
| Diagnostic Aids | The engine should be at operating temperature before carrying out the self-test. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DY . | ||
P1184 - ENGINE OIL TEMPERATURE (EOT) SENSOR OUT OF SELF-TEST RANGE
DTC P1229: CHARGE AIR COOLER (CAC) PUMP DRIVER
| Description | The charge air cooler (CAC) pump driver DTC sets when the powertrain control module (PCM) commands the supercharger intercooler pump to operate but no current is detected. | ||
|---|---|---|---|
| Possible Causes | Pump motor open circuit. Pump relay coil open Open circuit between the relay and pump Pump motor shorted Open circuit between the PCM and the relay Poor pump ground connection | ||
| Diagnostic Aids | Check for voltage at the relay. Check the fuse in the voltage circuit. Check the ground connection of the pump motor. The PID reading is on/off. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KP . | ||
P1229 - CHARGE AIR COOLER (CAC) PUMP DRIVER
DTC P1233: FUEL PUMP DRIVER MODULE DISABLED OR OFF LINE
| Description | LS: This DTC indicates the powertrain control module (PCM) is not receiving the fuel pump information on the communication link from the rear electronics module (REM). Refer to the appropriate MULTIFUNCTION ELECTRONIC MODULES article for REM selftest/diagnostics. All Others: The powertrain control module (PCM) monitors the fuel pump monitor (FPM) circuit from the fuel pump driver module (FPDM). With the key ON, engine OFF or key ON, engine running the FPDM continuously sends a duty cycle signal to the PCM through the FPM circuit. The test fails if the PCM stops receiving the duty cycle signal. | ||
|---|---|---|---|
| Possible Causes | Inertia fuel shutoff (IFS) switch needs to be reset Open FPDM ground circuit Open circuit to FPDM PWR RLY Open FPDM PWR circuit Open or shorted FPM circuit (engine should start) Damaged IFS switch Damaged FPDM PWR RLY Damaged FPDM | ||
| Diagnostic Aids | The PCM expects to see one of the following duty cycle signals from the FPDM on the FPM circuit: 1) 50% (500 ms on, 500 ms off), all OK. 2) 25% (250 ms on, 750 ms off), FPDM did not receive a fuel pump (FP) duty cycle command from the PCM, or the duty cycle that was received was invalid. 3) 75% (750 ms on, 250 off), the FPDM has detected a concern in the circuits between the FPDM and the fuel pump. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| LS | Refer to the MULTIFUNCTION ELECTRONIC MODULES for rear electronics module (REM) diagnostics. | ||
| All others | GO to Pinpoint Test KB . | ||
P1233 - FUEL PUMP DRIVER MODULE DISABLED OR OFF LINE
DTC P1234: FUEL PUMP DRIVER MODULE DISABLED OR OFF LINE
| Description | The powertrain control module (PCM) monitors the fuel pump monitor 2 (FPM2) circuit from the fuel pump driver module 2 (FPDM2). With the key ON, engine OFF or key ON, engine running the FPDM2 continuously sends a duty cycle signal to the PCM through the FPM2 circuit. The test fails if the PCM stops receiving the duty cycle signal. | ||
|---|---|---|---|
| Possible Causes | Inertia fuel shutoff (IFS) switch needs to be reset Open FPDM2 ground circuit Open circuit to FPDM2 PWR RLY Open FPDM2 PWR circuit Open or shorted FPM2 circuit (engine should start) Damaged IFS switch Damaged FPDM2 PWR RLY Damaged FPDM2 | ||
| Diagnostic Aids | The PCM expects to see one of the following duty cycle signals from the FPDM2 on the FPM2 circuit: 1) 50% (500 ms on, 500 ms off), all OK. 2) 25% (250 ms on, 750 ms off), the FPDM2 did not receive a fuel pump (FP) duty cycle command from the PCM, or the duty cycle that was received was invalid. 3) 75% (750 ms on, 250 off), the FPDM2 has detected a concern in the circuits between the FPDM2 and the fuel pump. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KB . | ||
P1234 - FUEL PUMP DRIVER MODULE DISABLED OR OFF LINE
DTC P1235: FUEL PUMP CONTROL OUT OF RANGE
| Description | Note: For the LS, the FPDM functions are incorporated in the rear electronics module (REM). Also, the REM does not use an FPM circuit. Diagnostic information is sent on the communication link. This DTC indicates the fuel pump driver module (FPDM) detected an invalid or missing fuel pump (FP) command signal from the powertrain control module (PCM). The FPDM sends a message to the PCM through the fuel pump monitor (FPM) circuit, indicating this concern was detected. The PCM sets the DTC when the message is received. | ||
|---|---|---|---|
| Possible Causes | FP circuit open or shorted Electronic throttle control (ETC) system concern. Check for ETC DTCs Damaged FPDM Damaged PCM | ||
| Diagnostic Aids | The FPDM sends a 25% duty cycle (250 ms on, 750 ms off) through the FPM circuit to the PCM while the concern is being detected by the FPDM. If the concern is no longer detected, the FPDM returns to sending an all OK (50% duty cycle) message to the PCM. For ETC applications, check if ETC DTC P2105 is present. An ETC system concern could cause P1235, and should be diagnosed first. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KB . | ||
P1235 - FUEL PUMP CONTROL OUT OF RANGE
DTC P1236: FUEL PUMP CONTROL OUT OF RANGE
| Description | This DTC indicates the fuel pump driver module 2 (FPDM2) detected an invalid or missing fuel pump (FP) circuit signal from the powertrain control module (PCM). The FPDM2 sends a message to the PCM through the fuel pump monitor (FPM2) circuit, indicating this concern is detected. The PCM sets the DTC when the message is received. | ||
|---|---|---|---|
| Possible Causes | FP circuit open or shorted Damaged FPDM2 Damaged PCM | ||
| Diagnostic Aids | The FPDM2 sends a 25% duty cycle (250 ms on, 750 ms off) through the FPM2 circuit to the PCM while the concern is being detected by the FPDM2. If the concern is no longer detected, the FPDM2 returns to sending an all OK (50% duty cycle) message to the PCM. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KB . | ||
P1236 - FUEL PUMP CONTROL OUT OF RANGE
DTC P1237: FUEL PUMP SECONDARY CIRCUIT
| Description | Note: For the LS, the FPDM functions are incorporated in the rear electronics module (REM). Also, the REM does not use an FPM circuit. Diagnostic information is sent on the communication link. This DTC indicates that the fuel pump driver module (FPDM) detected a fuel pump secondary circuit concern. The FPDM sends a message to the powertrain control module (PCM) through the fuel pump monitor (FPM) circuit indicating this concern was detected. The PCM sets the DTC when the message is received. | ||
|---|---|---|---|
| Possible Causes | Open or shorted FP PWR circuit Open FP RTN circuit to FPDM Open or shorted circuit in the fuel pump Locked fuel pump rotor Damaged FPDM Circuits associated with the fuel pump relay (LS) | ||
| Diagnostic Aids | The FPDM sends a 75% duty cycle (750 ms on, 250 ms off) through the FPM circuit to the PCM while the concern is being detected by the FPDM. If the concern is no longer detected, the PCM returns to sending an all OK (50% duty cycle) message to the PCM. The FPDM controls pump speed by supplying a variable ground on the FP RTN circuit. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KB . | ||
P1237 - FUEL PUMP SECONDARY CIRCUIT
DTC P1238: FUEL PUMP SECONDARY CIRCUIT
| Description | This DTC indicates the fuel pump driver module (FPDM2) detected a fuel pump secondary circuit concern. The FPDM2 sends a message to the powertrain control module (PCM) through the fuel pump monitor (FPM2) circuit, indicating this concern was detected. The PCM sets the DTC when the message is received. | ||
|---|---|---|---|
| Possible Causes | Open or shorted FP2PWR circuit Open FP2RTN circuit to FPDM2 Open or shorted circuit in the fuel pump Locked fuel pump rotor Damaged FPDM2 | ||
| Diagnostic Aids | The FPDM2 sends a 75% duty cycle (750 ms on, 250 ms off) through the FPM2 circuit to the PCM while the concern is being detected by the FPDM2. If the concern is no longer detected, the PCM returns to sending an all OK (50% duty cycle) message to the PCM. The FPDM2 controls pump speed by supplying a variable ground on the FP2RTN circuit. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KB . | ||
P1238 - FUEL PUMP SECONDARY CIRCUIT
DTC P1244: ALTERNATOR LOAD HIGH INPUT
| Description | The powertrain control module (PCM) monitors generator load from the generator/regulator in the form of frequency. The concern indicates the input is higher than the load should be in normal operation. The load input could be high when a battery short to ground exists. | ||
|---|---|---|---|
| Possible Causes | GENLI circuit short to voltage GENRC circuit short to voltage B+ open prior to start-up Open GENRC prior to start-up Open ILC prior to start-up Damaged PCM | ||
| Diagnostic Aids | Verify the battery voltage is 14.5 volts. Verify the generator/regulator has the correct part number. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HY . | ||
P1244 - ALTERNATOR LOAD HIGH INPUT
DTC P1245: ALTERNATOR LOAD LOW INPUT
| Description | The powertrain control module (PCM) monitors generator load from the generator/regulator in the form of frequency. The concern indicates the input is lower than the load should be in normal operation. The load input could be low when no generator output exists. | ||
|---|---|---|---|
| Possible Causes | GENRC circuit short to ground GENLI circuit short to ground Open B+ wire during operation Low system voltage Broken generator belt Damaged generator/regulator assembly Damaged PCM | ||
| Diagnostic Aids | Verify the battery voltage is 14.5 volts. Verify the generator/regulator has the correct part number. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HY . | ||
P1245 - ALTERNATOR LOAD LOW INPUT
DTC P1246: ALTERNATOR LOAD INPUT
| Description | The powertrain control module (PCM) monitors the generator load from the generator/regulator in the form of frequency. The frequency range is determined by the temperature of the voltage regulator, where 97% indicates a full load, and less than 6% indicates no load. | ||
|---|---|---|---|
| Possible Causes | GENLI circuit shorted to voltage or ground GENLI circuit open GENRC circuit shorted to power or ground GENRC circuit open ILC circuit shorted to voltage or ground ILC circuit open Battery-sense circuit open Generator drive mechanism Damaged generator/regulator assembly Damaged PCM | ||
| Diagnostic Aids | Verify the battery voltage is 14.5 volts. Verify the generator/regulator has the correct part number. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HY . | ||
P1246 - ALTERNATOR LOAD INPUT
DTC P1260: THEFT DETECTED, VEHICLE IMMOBILIZED
| Description | Indicates the passive anti-theft system (PATS) determined a theft condition existed and the engine is disabled. This DTC is a good indicator to check the PATS for DTCs. | ||
|---|---|---|---|
| Possible Causes | Previous theft condition Anti-theft system failure | ||
| Diagnostic Aids | Theft indicator flashing rapidly or on solid when ignition switch is in the ON position. Check anti-theft system for DTCs. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test QD . | ||
P1260 - THEFT DETECTED, VEHICLE IMMOBILIZED
DTC P1261: CYLINDER 1 HIGH TO LOW SIDE SHORT
| Description | This DTC is set when a concern is detected by the fuel injector interface module in the secondary (rearward) fuel injector circuit. | ||
|---|---|---|---|
| Possible Causes | Injector circuit is open Injector circuit is shorted to GND Damaged fuel injector Damaged fuel injector interface module | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P1261 - CYLINDER 1 HIGH TO LOW SIDE SHORT
DTC P1262: CYLINDER 2 HIGH TO LOW SIDE SHORT
| Description | See the description for DTC P1261. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P1261. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P1262 - CYLINDER 2 HIGH TO LOW SIDE SHORT
DTC P1263: CYLINDER 3 HIGH TO LOW SIDE SHORT
| Description | See the description for DTC P1261. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P1261. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P1263 - CYLINDER 3 HIGH TO LOW SIDE SHORT
DTC P1264: CYLINDER 4 HIGH TO LOW SIDE SHORT
| Description | See the description for DTC P1261. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P1261. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P1264 - CYLINDER 4 HIGH TO LOW SIDE SHORT
DTC P1265: CYLINDER 5 HIGH TO LOW SIDE SHORT
| Description | See the description for DTC P1261. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P1261. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P1265 - CYLINDER 5 HIGH TO LOW SIDE SHORT
DTC P1266: CYLINDER 6 HIGH TO LOW SIDE SHORT
| Description | See the description for DTC P1261. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P1261. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P1266 - CYLINDER 6 HIGH TO LOW SIDE SHORT
DTC P1267: CYLINDER 7 HIGH TO LOW SIDE SHORT
| Description | See the description for DTC P1261. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P1261. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P1267 - CYLINDER 7 HIGH TO LOW SIDE SHORT
DTC P1268: CYLINDER 8 HIGH TO LOW SIDE SHORT
| Description | See the description for DTC P1261. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P1261. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P1268 - CYLINDER 8 HIGH TO LOW SIDE SHORT
DTC P1270: ENGINE RPM OR VEHICLE SPEED LIMITER REACHED
| Description | Indicates the vehicle has been operated in a manner which caused the engine or vehicle to exceed a calibration limit. The engine RPM and vehicle speed are continuously monitored and evaluated by the powertrain control module (PCM). The DTC is set when the RPM or vehicle speed falls out of a calibrated range. For additional information on the engine RPM/vehicle speed limiter, refer to POWERTRAIN CONTROL SOFTWARE . | ||
|---|---|---|---|
| Possible Causes | Wheel slippage (water, ice, mud, and snow) Excessive engine RPM in NEUTRAL or operated in the wrong transmission gear Vehicle driven at a high rate of speed | ||
| Diagnostic Aids | The DTC indicates the vehicle was operated in a manner which caused the engine RPM or vehicle speed to exceed a calibrated limit. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test ND . | ||
P1270 - ENGINE RPM OR VEHICLE SPEED LIMITER REACHED
DTC P1271: CYLINDER 1 HIGH TO LOW SIDE OPEN
| Description | This DTC is set when a concern is detected by the fuel injector interface module in the secondary (rearward) fuel injector circuit. | ||
|---|---|---|---|
| Possible Causes | Injector circuit is shorted to VPWR Damaged fuel injector Damaged fuel injector interface module | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P1271 - CYLINDER 1 HIGH TO LOW SIDE OPEN
DTC P1272: CYLINDER 2 HIGH TO LOW SIDE OPEN
| Description | See the description for DTC P1271. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P1271. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P1272 - CYLINDER 2 HIGH TO LOW SIDE OPEN
DTC P1273: CYLINDER 3 HIGH TO LOW SIDE OPEN
| Description | See the description for DTC P1271. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P1271. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P1273 - CYLINDER 3 HIGH TO LOW SIDE OPEN
DTC P1274: CYLINDER 4 HIGH TO LOW SIDE OPEN
| Description | See the description for DTC P1271. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P1271. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P1274 - CYLINDER 4 HIGH TO LOW SIDE OPEN
DTC P1275: CYLINDER 5 HIGH TO LOW SIDE OPEN
| Description | See the description for DTC P1271. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P1271. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P1275 - CYLINDER 5 HIGH TO LOW SIDE OPEN
DTC P1276: CYLINDER 6 HIGH TO LOW SIDE OPEN
| Description | See the description for DTC P1271. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P1271. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P1276 - CYLINDER 6 HIGH TO LOW SIDE OPEN
DTC P1277: CYLINDER 7 HIGH TO LOW SIDE OPEN
| Description | See the description for DTC P1271. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P1271. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P1277 - CYLINDER 7 HIGH TO LOW SIDE OPEN
DTC P1278: CYLINDER 8 HIGH TO LOW SIDE OPEN
| Description | See the description for DTC P1271. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P1271. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HL . | ||
P1278 - CYLINDER 8 HIGH TO LOW SIDE OPEN
DTC P1285: CYLINDER HEAD OVER TEMPERATURE CONDITION
| Description | Indicates an engine overheat condition was sensed by the cylinder head temperature (CHT) sensor. | ||
|---|---|---|---|
| Possible Causes | Low engine coolant level Base engine concerns Engine cooling system concerns CHT sensor concern | ||
| Diagnostic Aids | On some applications when this fault occurs the engine temperature warning indicator will illuminate or force the temperature gauge to the full H (hot) zone. The warning indicator can be triggered by either grounding the engine temperature warning circuit when wired to the powertrain control module (PCM), or by sending a PCM network message to the instrument cluster. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DL . | ||
P1285 - CYLINDER HEAD OVER TEMPERATURE CONDITION
DTC P1288: CYLINDER HEAD TEMPERATURE (CHT) SENSOR OUT OF SELF-TEST RANGE
| Description | Indicates the CHT sensor is out of self-test range. The engine is not at a normal operating temperature. | ||
|---|---|---|---|
| Possible Causes | Cold engine Engine overheating Damaged harness connector Low engine coolant level Damaged CHT sensor | ||
| Diagnostic Aids | Bring the engine to operating temperature. If cold, repeat the self-test. If the engine overheats, check the cooling system. Refer to the appropriate ENGINE COOLING article for cooling system diagnosis. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DL . | ||
P1288 - CYLINDER HEAD TEMPERATURE (CHT) SENSOR OUT OF SELF-TEST RANGE
DTC P1289: CYLINDER HEAD TEMPERATURE (CHT) SENSOR CIRCUIT HIGH
| Description | Indicates a CHT sensor circuit open. | ||
|---|---|---|---|
| Possible Causes | Open CHT sensor circuit CHT sensor circuit short to voltage Damaged CHT sensor Improper harness connection | ||
| Diagnostic Aids | A CHT V PID reading of greater than 4.6 volts with key ON engine OFF, or during any engine operating mode, indicates a concern is present. Note: DTC P0118 may also be reported when this DTC is set. Either of these DTCs activate the MIL. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DL . | ||
P1289 - CYLINDER HEAD TEMPERATURE (CHT) SENSOR CIRCUIT HIGH
DTC P128A: CYLINDER HEAD TEMPERATURE (CHT) SENSOR CIRCUIT INTERMITTENT/ERRATIC
| Description | Indicates the CHT circuit became intermittently open or shorted while the engine was running. | ||
|---|---|---|---|
| Possible Causes | Damaged harness or connector Damaged sensor | ||
| Diagnostic Aids | Monitor the CHT on a diagnostic tool. Look for sudden changes in the reading when the harness is wiggled or the sensor is tapped. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DL . | ||
P128A - CYLINDER HEAD TEMPERATURE (CHT) SENSOR CIRCUIT INTERMITTENT/ERRATIC
DTC P1290: CYLINDER HEAD TEMPERATURE (CHT) SENSOR CIRCUIT LOW
| Description | Indicates a CHT sensor circuit short to ground. | ||
|---|---|---|---|
| Possible Causes | Grounded circuit in CHT harness Damaged CHT sensor Improper harness connection | ||
| Diagnostic Aids | A CHT V PID value reading of less than 0.2 volt with key ON engine OFF, or during any engine operating mode, indicates a concern is present. DTC P0117 may also be reported when this DTC is set. Either of these DTCs activate the MIL. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DL . | ||
P1290 - CYLINDER HEAD TEMPERATURE (CHT) SENSOR CIRCUIT LOW
DTC P1299: CYLINDER HEAD OVER TEMPERATURE PROTECTION ACTIVE
| Description | Indicates an engine overheat condition was detected by the cylinder head temperature (CHT) sensor. An FMEM strategy called fail-safe cooling was activated to cool the engine. | ||
|---|---|---|---|
| Possible Causes | Engine cooling system concerns Low engine coolant level Base engine concerns | ||
| Diagnostic Aids | Refer to POWERTRAIN CONTROL SOFTWARE , for more information on the fail-safe cooling strategy and cylinder head temperature sensor. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DL . | ||
P1299 - CYLINDER HEAD OVER TEMPERATURE PROTECTION ACTIVE
DTC P1309: MISFIRE MONITOR HARDWARE - CAMSHAFT POSITION SENSOR (CMP) MISALIGNED, CRANKSHAFT POSITION SENSOR (CKP)/CMP NOISE, POWERTRAIN CONTROL MODULE (PCM) AICE CHIP
| Description | When the misfire monitor is disabled, usually due to the input signal generated by the camshaft position (CMP) sensor, by sensing the passage of teeth from the CMP wheel. | ||
|---|---|---|---|
| Possible Causes | CMP sensor Damaged engine coolant temperature (ECT) sensor Damaged mass air flow (MAF) sensor Damaged crankshaft position sensor (CKP) sensor | ||
| Diagnostic Aids | Verify the CMP sensor is installed correctly and is not out of synchronization. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HD . | ||
P1309 - MISFIRE MONITOR HARDWARE - CAMSHAFT POSITION SENSOR (CMP) MISALIGNED, CRANKSHAFT POSITION SENSOR (CKP)/CMP NOISE, POWERTRAIN CONTROL MODULE (PCM) AICE CHIP
DTC P1336: CRANKSHAFT/CAMSHAFT SENSOR RANGE/PERFORMANCE
| Description | The input signal to the powertrain control module (PCM) from the crankshaft position (CKP) sensor or the camshaft position (CMP) sensor is erratic. | ||
|---|---|---|---|
| Possible Causes | Damaged CKP sensor Damaged CMP sensor Base engine concerns Harness concerns | ||
| Diagnostic Aids | Check the harness for routing, alterations, improper shielding, or electrical interference from other improperly functioning systems. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test JD . | ||
P1336 - CRANKSHAFT/CAMSHAFT SENSOR RANGE/PERFORMANCE
DTC P1397: SYSTEM VOLTAGE OUT OF SELF-TEST RANGE
| Description | This DTC indicates that the 12-volt system voltage is too high or too low during the key on engine off (KOEO) or key on engine running (KOER) self-test. It sets if the system voltage falls below or exceeds the calibrated threshold at any time during the KOEO or KOER self-test. | ||
|---|---|---|---|
| Possible Causes | Battery or charging system concern. | ||
| Diagnostic Aids | Make sure the battery voltage is between 11 and 18 volts (10 and 18 volts for Ford GT) before running a KOEO or KOER self-test. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate CHARGING SYSTEM - GENERAL INFORMATION article to diagnose the charging system concern. | ||
P1397 - SYSTEM VOLTAGE OUT OF SELF-TEST RANGE
DTC P1405: DIFFERENTIAL PRESSURE FEEDBACK (DPF) SENSOR UPSTREAM HOSE OFF OR PLUGGED
| Description | While driving, the exhaust gas recirculation (EGR) monitor commands the EGR valve closed and checks the differential pressure across the EGR orifice. The test fails when the signal from the DPF EGR sensor indicates EGR flow is in the negative direction. | ||
|---|---|---|---|
| Possible Causes | The upstream hose is disconnected The upstream hose is plugged (ice) Plugged or damaged EGR tube | ||
| Diagnostic Aids | Look for signs of water or icing in the hose. Verify the hose connection and routing (no excessive dips). Verify the DPF EGR sensor for correct mounting and function. View the DPF EGR PID while applying and releasing vacuum directly to the sensor with a hand pump. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HE . | GO to Pinpoint Test HE . | |
P1405 - DIFFERENTIAL PRESSURE FEEDBACK (DPF) SENSOR UPSTREAM HOSE OFF OR PLUGGED
DTC P1406: DIFFERENTIAL PRESSURE FEEDBACK (DPF) SENSOR DOWNSTREAM HOSE OFF OR PLUGGED
| Description | While driving, the exhaust gas recirculation (EGR) monitor commands the EGR valve closed and checks the differential pressure across the EGR orifice. The test fails when the signal from the DPF EGR sensor continues to indicate EGR flow even after the EGR valve is commanded closed. | ||
|---|---|---|---|
| Possible Causes | Downstream hose is disconnected Downstream hose is plugged (ice) Plugged or damaged EGR tube | ||
| Diagnostic Aids | Look for signs of water or icing in the hose. Verify the hose connection and routing (no excessive dips). Verify the DPF EGR sensor for correct mounting and function. View the DPF EGR PID while applying and releasing vacuum directly to the sensor with a hand pump. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HE . | ||
P1406 - DIFFERENTIAL PRESSURE FEEDBACK (DPF) SENSOR DOWNSTREAM HOSE OFF OR PLUGGED
DTC P1408: EXHAUST GAS RECIRCULATION (EGR) FLOW OUT OF SELF-TEST RANGE (NON-MIL)
| Description | This test is carried out during the key on engine running (KOER) on-demand self-test only. The EGR system is commanded on at a fixed engine speed. The test does not pass and the DTC is set when the measured EGR flow falls above or below the required calibration. | ||
|---|---|---|---|
| Possible Causes | For electric EGR (EEGR) system, see possible causes for DTC P0400. For vacuum activated systems, see the possible causes for DTC P0401. | ||
| Diagnostic Aids | For EEGR, use the output state control function of the diagnostic tool and monitor the manifold absolute pressure (MAP) PID and the EEGR PID (EGRMDSD) while commanding the EEGR on. If EGR is introduced into the engine at idle, the RPM will drop or stall out. For vacuum systems see diagnostic aids for P0401. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles With an Electric EGR (EEGR) | GO to Pinpoint Test KD . | ||
| Vehicles with an EGR system module (ESM) | GO to Pinpoint Test HH . | ||
| All others | GO to Pinpoint Test HE . | ||
P1408 - EXHAUST GAS RECIRCULATION (EGR) FLOW OUT OF SELF-TEST RANGE (NON-MIL)
DTC P1409: EXHAUST GAS RECIRCULATION (EGR) VACUUM REGULATOR (EGRVR) SOLENOID CIRCUIT
| Description | This test checks the electrical function of the EGRVR solenoid. The test fails when the EGRVR circuit voltage is either too high or too low when compared to the expected voltage range. The EGR system must be enabled for the test to be completed. | ||
|---|---|---|---|
| Possible Causes | EGRVR circuit open VPWR open to EGRVR solenoid EGRVR circuit short to voltage or ground Damaged EGRVR solenoid | ||
| Diagnostic Aids | The EGR vacuum regulator solenoid resistance is between 26 and 40 ohms. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles with an EGR system module (ESM) | GO to Pinpoint Test HH . | ||
| All others | GO to Pinpoint Test HE . | ||
P1409 - EXHAUST GAS RECIRCULATION (EGR) VACUUM REGULATOR (EGRVR) SOLENOID CIRCUIT
DTC P1436: A/C EVAPORATOR TEMPERATURE (A/CET) CIRCUIT LOW INPUT
| Description | Indicates the A/CET signal input was less than the self-test minimum. The self-test minimum is 0.13 volts. | ||
|---|---|---|---|
| Possible Causes | A/CET circuit short to ground or SIG RTN Damaged A/CET sensor | ||
| Diagnostic Aids | The powertrain control module (PCM) sources a low current 5 volt reference on the A/CET circuit (this voltage can be measured with the sensor disconnected). As the A/C evaporator air temperature changes, the A/CET circuit resistance to SIG RTN (ground) changes (which changes the voltage the PCM detects). When the A/CET signal is detected below the self-test minimum, check for shorts to SIG RTN or ground which would pull the voltage low. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DJ . | ||
P1436 - A/C EVAPORATOR TEMPERATURE (A/CET) CIRCUIT LOW INPUT
DTC P1437: A/C EVAPORATOR TEMPERATURE (A/CET) CIRCUIT HIGH INPUT
| Description | Indicates the A/CET signal input was greater than the self-test minimum. The self-test maximum is 4.5 volts. | ||
|---|---|---|---|
| Possible Causes | A/CET circuit open SIG RTN circuit open to A/CET sensor A/CET circuit short to voltage (VREF) Damaged A/CET sensor | ||
| Diagnostic Aids | The powertrain control module (PCM) sources a low current 5 volt reference on the A/CET circuit (this voltage can be measured with the sensor disconnected). As the A/C evaporator air temperature changes, the A/CET circuit resistance to SIG RTN (ground) changes (which changes the voltage the PCM detects). When the A/CET signal is detected above the self-test maximum, check for open circuits (A/CET or SIG RTN), which would cause the voltage to remain high. Although not as probable, also check for a short to voltage (VREF). | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DJ . | ||
P1437 - A/C EVAPORATOR TEMPERATURE (A/CET) CIRCUIT HIGH INPUT
DTC P1443: EVAPORATIVE EMISSION SYSTEM CONTROL VALVE (LOW/NO FLOW)
| Description | A fuel tank pressure change greater than minus (-) 7 inches of water in 30 seconds occurred with a purge, fuel vapor, flow at less than 0.02 lb/min (0.15 gm/s). | ||
|---|---|---|---|
| Possible Causes | Blocked fuel vapor hose between the EVAP canister purge valve and the fuel tank pressure (FTP) sensor Blocked fuel vapor hose between the EVAP canister purge valve and the engine intake manifold Blocked vacuum hose between the EVAP canister purge valve solenoid and the engine intake manifold EVAP canister purge valve mechanically stuck closed | ||
| Diagnostic Aids | Check for blockages between the fuel tank, the EVAP canister purge valve, and the engine intake manifold. Check for obstructions in the EVAP canister purge valve diaphragm and ports. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HX . | ||
P1443 - EVAPORATIVE EMISSION SYSTEM CONTROL VALVE (LOW/NO FLOW)
DTC P1450: UNABLE TO BLEED UP FUEL TANK VACUUM
| Description | Monitors the fuel vapor vacuum and pressure in the fuel tank. System failure occurs when the evaporative emission (EVAP) running loss monitor detects excessive fuel tank vacuum with the engine running, but not at idle. | ||
|---|---|---|---|
| Possible Causes | Blockages or kinks in the EVAP canister tube or EVAP canister purge outlet tube between the fuel tank, the EVAP canister purge valve and the EVAP canister Fuel filler cap stuck closed, preventing vacuum relief Contaminated fuel vapor elbow on the EVAP canister Restricted EVAP canister CV solenoid stuck partially or fully open Plugged CV solenoid filter EVAP canister purge valve stuck open VREF circuit open in the harness near the fuel tank pressure (FTP) sensor, the FTP sensor or the powertrain control module (PCM) Damaged FTP sensor | ||
| Diagnostic Aids | Visually inspect the EVAP canister inlet port, CV solenoid filter, and canister vent hose assembly for contamination or debris. Check EVAP canister purge valve for vacuum leak. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HX . | ||
P1450 - UNABLE TO BLEED UP FUEL TANK VACUUM
DTC P1451: EVAPORATIVE EMISSION SYSTEM VENT CONTROL CIRCUIT
| Description | Monitors the canister vent (CV) solenoid circuit for an electrical failure. The test fails when the signal moves outside the minimum or maximum allowable calibrated parameters for a specified canister vent duty cycle by powertrain control module (PCM) command. | ||
|---|---|---|---|
| Possible Causes | VPWR circuit open CV solenoid circuit shorted to PWR GND or CHASSIS GND Damaged CV solenoid CV solenoid circuit open CV solenoid circuit shorted to VPWR | ||
| Diagnostic Aids | To verify normal functioning, monitor the evaporative emission (EVAP) CV solenoid signal PID EVAPCV and the signal voltage on the PCM control side. With the valve open, the EVAPCV PID indicates 0% duty cycle and a voltage approximately equal to battery voltage. When the valve is commanded fully closed, the EVAPCV PID indicates 100% duty cycle, and a minimum voltage drop of 4 volts is normal. Output test mode may be used to switch the output on and off to verify function. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HX . | ||
P1451 - EVAPORATIVE EMISSION SYSTEM VENT CONTROL CIRCUIT
DTC P1460: A/C CLUTCH RELAY (A/CCR) PRIMARY CIRCUIT MALFUNCTION (ALSO REFERRED TO AS WAC CIRCUIT)
| Description | Monitors the A/CCR circuit output from the powertrain control module (PCM). The test fails when the PCM grounds the A/CCR circuit, excessive current draw is detected on the A/CCR circuit; or, with the A/CCR circuit not grounded by the PCM, voltage is not detected on the A/CCR circuit (the PCM expects to detect VPWR voltage coming through the A/CCR relay coil to the A/CCR circuit). | ||
|---|---|---|---|
| Possible Causes | Open or shorted A/CCR circuit Damaged A/CCR relay Open VPWR circuit to the A/CCR relay | ||
| Diagnostic Aids | The A/CCR control circuit can be monitored using the WACF and WAC PID. When the WACF PID reads YES, a concern is present. An open circuit or short to ground can only be detected when the PCM is not grounding the circuit. A short to voltage can only be detected when the PCM is grounding the circuit. During the KOEO and KOER self-test, the WAC circuit is cycled on and off. Verify the A/C and the defrost were off during key on engine off (KOEO) and key on engine running (KOER) self-test (Check A/CCS the PID to verify). If the vehicle is not equipped with A/C, DTC P1460 can be ignored. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KM . | ||
P1460 - A/C CLUTCH RELAY (A/CCR) PRIMARY CIRCUIT MALFUNCTION (ALSO REFERRED TO AS WAC CIRCUIT)
DTC P1461: AIR CONDITIONING PRESSURE (A/CP) SENSOR HIGH VOLTAGE DETECTED
| Description | The A/CP sensor inputs a voltage to the PCM. If the voltage is above a calibrated level the DTC sets. | ||
|---|---|---|---|
| Possible Causes | A/CP sensor circuit short to PWR A/CP circuit open A/CP circuit short to VREF Damaged A/CP sensor | ||
| Diagnostic Aids | Verify a VREF voltage between 4 and 6 volts. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DS . | ||
P1461 - AIR CONDITIONING PRESSURE (A/CP) SENSOR HIGH VOLTAGE DETECTED
DTC P1462: AIR CONDITIONING PRESSURE (A/CP) SENSOR LOW VOLTAGE DETECTED
| Description | The A/CP sensor inputs a voltage to the powertrain control module (PCM). If the voltage is below the calibrated level the DTC will set. The A/CP sensor inputs a voltage to the PCM. If the voltage is below the calibrated level the DTC sets. | ||
|---|---|---|---|
| Possible Causes | A/CP circuit short to GND or SIGRTN VREF circuit open Open A/CP circuit Damaged A/CP sensor | ||
| Diagnostic Aids | Verify a VREF voltage between 4 and 6 volts. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DS . | ||
P1462 - AIR CONDITIONING PRESSURE (A/CP) SENSOR LOW VOLTAGE DETECTED
DTC P1463: AIR CONDITIONING PRESSURE SENSOR (A/CP) INSUFFICIENT PRESSURE CHANGE
| Description | Each time the A/C clutch engages, the powertrain control module (PCM) is looking for a pressure change in the refrigerant. If the change in pressure is outside of the calibration the DTC sets. | ||
|---|---|---|---|
| Possible Causes | A/C system mechanical failure Open ACP or VREF circuit A/C sensor damaged A/C system electrical failure A/C clutch always engaged | ||
| Diagnostic Aids | Verify the A/C system function, including refrigerant charge. Refer to the appropriate CLIMATE CONTROL SYSTEM - GENERAL INFORMATION & DIAGNOSTICS article . | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DS . | ||
P1463 - AIR CONDITIONING PRESSURE SENSOR (A/CP) INSUFFICIENT PRESSURE CHANGE
DTC P1464: A/C DEMAND OUT OF SELF-TEST RANGE
| Description | The DTC is set when the powertrain control module (PCM) receives a request for A/C during the selftest. | ||
|---|---|---|---|
| Possible Causes | A/C or defrost on during self-test A/CCS circuit short to voltage Damaged A/C demand switch Damaged WAC relay | ||
| Diagnostic Aids | If the A/C or defrost was on during self-test, turn the A/C or defrost off and repeat the self-test. An A/C request to the PCM may come through the communication link or on a dedicated hardwire circuit from the A/C switch. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KM . | GO to Pinpoint Test KM . | |
P1464 - A/C DEMAND OUT OF SELF-TEST RANGE
DTC P1469: LOW A/C CYCLING PERIOD
| Description | Indicates frequent A/C compressor clutch cycling. | ||
|---|---|---|---|
| Possible Causes | Mechanical A/C system concern (such as low refrigerant charge, damaged A/C cycling switch) Intermittent open between the cycling pressure switch and the PCM Intermittent open in the IGN RUN circuit to cycling pressure switch (if applicable) | ||
| Diagnostic Aids | This test is designed to protect the transmission. In some strategies, the PCM unlocks the torque converter during A/C clutch engagement. If a concern is present that results in frequent A/C clutch cycling, damage could occur if the torque converter is cycled at these intervals. This test detects this condition, sets the DTC and prevents the torque converter from excessive cycling. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KM . | ||
P1469 - LOW A/C CYCLING PERIOD
DTC P1474: LOW FAN CONTROL (LFC)/FAN CONTROL 1 (FC1) PRIMARY CIRCUIT MALFUNCTION
| Description | Monitors the LFC, primary circuit output from the powertrain control module (PCM). The test fails if the PCM grounds the LFC circuit, excessive current draw is detected on the LFC circuit, or with the LFC circuit not grounded by the PCM, voltage is not detected on the LFC circuit (the PCM expects to detect VPWR voltage coming through the low speed FC relay coil to the LFC circuit). | ||
|---|---|---|---|
| Possible Causes | Open or shorted LFC circuit Open VPWR circuit to the low speed FC relay Damaged low speed FC relay | ||
| Diagnostic Aids | When the LFCF PID reads YES, a concern is currently present. An open circuit or short to ground can only be detected when the PCM is not grounding the LFC circuit. A short to voltage can only be detected when the PCM is grounding the LFC circuit. During the key on engine off (KOEO) and key on engine running (KOER) self-test, the LFC circuit is cycled on and off. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KF . | ||
P1474 - LOW FAN CONTROL (LFC)/FAN CONTROL 1 (FC1) PRIMARY CIRCUIT MALFUNCTION
DTC P1477: MEDIUM FAN CONTROL (MFC)/ FAN CONTROL 2 (FC2) PRIMARY CIRCUIT FAILURE
| Description | Monitors the MFC primary circuit output from the powertrain control module (PCM). The test fails if the MFC output commanded on (grounded), excessive current draw is detected on the MFC circuit or, with the MFC circuit commanded off, voltage is not detected on the MFC circuit (the PCM expects to detect IGN START/RUN voltage through the medium speed FC relay coil to the MFC circuit). | ||
|---|---|---|---|
| Possible Causes | Open or shorted MFC circuit Open IGN START/RUN circuit to the medium speed FC relay Damaged medium speed FC relay | ||
| Diagnostic Aids | When the MFCF PID reads YES, a concern is currently present. An open circuit or short to ground can only be detected when the PCM is not grounding the MFC circuit. A short to voltage can only be detected when the PCM is grounding the MFC circuit. During the key on engine off (KOEO) and key on engine running (KOER) self-test, the MFC circuit is cycled on and off. When using output test mode on a diagnostic tool, and commanding the low speed fan on, the PCM also activates the medium speed fan output. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KF . | ||
P1477 - MEDIUM FAN CONTROL (MFC)/ FAN CONTROL 2 (FC2) PRIMARY CIRCUIT FAILURE
DTC P1479: HIGH FAN CONTROL (HFC)/FAN CONTROL 3 (FC3) PRIMARY CIRCUIT MALFUNCTION
| Description | Monitors the HFC primary circuit output from the powertrain control module (PCM). The test fails if the HFC output commanded on (grounded), excessive current draw is detected on the HFC circuit or, with the HFC circuit commanded off, voltage is not detected on the HFC circuit (the PCM expects to detect VPWR voltage through the high speed FC relay coil to the HFC circuit). | ||
|---|---|---|---|
| Possible Causes | Open or shorted HFC circuit Open VPWR circuit to the high speed FC relay Damaged high speed FC relay | ||
| Diagnostic Aids | When the HFCF PID reads YES, a concern is currently present. An open circuit or short to ground can only be detected when the PCM is not grounding the HFC circuit. A short to voltage can only be detected when the PCM is grounding the HFC circuit. During the key on engine off (KOEO) and key on engine running (KOER) self-test, the HFC circuit is cycled on and off. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KF . | ||
P1479 - HIGH FAN CONTROL (HFC)/FAN CONTROL 3 (FC3) PRIMARY CIRCUIT MALFUNCTION
DTC P1489: PCV HEATER CONTROL CIRCUIT
| Description | This DTC sets when the powertrain control module (PCM) detects a positive crankcase ventilation (PCV) heater circuit failure. | ||
|---|---|---|---|
| Possible Causes | Open or shorted PCV circuit Damaged PCV heater assembly | ||
| Diagnostic Aids | Make sure the PCV valve is correct for the engine application and the PCV heater circuit is properly connected. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HG . | ||
P1489 - PCV HEATER CONTROL CIRCUIT
DTC P1500: VEHICLE SPEED SENSOR (VSS)
| Description | Indicates the VSS input signal was intermittent. This DTC is set when a VSS concern interferes with other on-board diagnostics (OBD) tests, such as the catalyst efficiency monitor, the EVAP monitor or the HO2S monitor. | ||
|---|---|---|---|
| Possible Causes | Intermittent VSS connections Intermittent open in the VSS harness circuit(s) Intermittent short in VSS harness circuit(s) Damaged VSS | ||
| Diagnostic Aids | Check the wiring, connector, and sensor for damage. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| F-Super Duty | GO to Pinpoint Test DF . | ||
| Five Hundred, Freestyle, Montego, Navigator | The powertrain control module (PCM) uses information from the anti-lock brake system (ABS) module and the transmission control module (TCM) to calculate vehicle speed. Check these modules for DTCs. | ||
| Vehicles with an automatic transmission and output shaft speed (OSS) sensor DTCs | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
| All others | GO to Pinpoint Test DP . | ||
P1500 - VEHICLE SPEED SENSOR (VSS)
DTC P1501: VEHICLE SPEED SENSOR (VSS) OUT OF SELF-TEST RANGE
| Description | Indicates the VSS input signal is out of self-test range. If the powertrain control module (PCM) detects a VSS input signal any time during the self-test, DTC P1501 is set and the test aborts. | ||
|---|---|---|---|
| Possible Causes | Noise on the VSS input signal from the radio frequency interference/electromagnetic interference (RFI/EMI) External sources, such as ignition wires, the charging circuit or aftermarket equipment | ||
| Diagnostic Aids | Verify the VSS input is 0 km/h (0 mph) when the vehicle transmission is in PARK. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| F-Super Duty | GO to Pinpoint Test DF . | GO to Pinpoint Test DF . | |
| Five Hundred, Freestyle, Montego, Navigator | The powertrain control module (PCM) uses information from the anti-lock brake system (ABS) module and the transmission control module (TCM) to calculate vehicle speed. Check these modules for DTCs. | ||
| Vehicles with an automatic transmission and output shaft speed (OSS) sensor DTCs | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
| All others | GO to Pinpoint Test DP . | GO to Pinpoint Test DP . | |
P1501 - VEHICLE SPEED SENSOR (VSS) OUT OF SELF-TEST RANGE
DTC P1502: VEHICLE SPEED SENSOR (VSS) INTERMITTENT
| Description | Indicates the powertrain control module (PCM) detected an error in the vehicle speed information. Vehicle speed data is received from either the VSS, transfer case speed sensor (TCSS) or anti-lock brake system (ABS) control module. This DTC is set the same way as P0500. However, it is intended to flash the transmission control indicator lamp (TCIL) for first time VSS circuit error/malfunctions. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P0500. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0500. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| F-Super Duty | GO to Pinpoint Test DF . | ||
| Vehicles with an automatic transmission and output shaft speed (OSS) sensor DTCs | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
| All others | GO to Pinpoint Test DP . | ||
P1502 - VEHICLE SPEED SENSOR (VSS) INTERMITTENT
DTC P1504: IDLE AIR CONTROL (IAC) CIRCUIT
| Description | This DTC is set when the powertrain control module (PCM) detects an electrical load failure on the IAC output circuit. | ||
|---|---|---|---|
| Possible Causes | IAC circuit open VPWR to IAC solenoid open IAC circuit short to voltage IAC circuit short to GND Damaged IAC valve | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KE . | ||
P1504 - IDLE AIR CONTROL (IAC) CIRCUIT
DTC P1506: IDLE AIR CONTROL (IAC) OVERSPEED ERROR
| Description | This DTC is set when the powertrain control module (PCM) detects an engine idle speed that is greater than the desired RPM. | ||
|---|---|---|---|
| Possible Causes | IAC circuit short to GND Damaged IAC valve IAC valve stuck open Air intake leak after throttle body Vacuum leaks Failed EVAP system | ||
| Diagnostic Aids | Disconnect the IAC valve and look for little or no change in engine RPM as an indication of a stuck or damaged valve. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KE . | ||
P1506 - IDLE AIR CONTROL (IAC) OVERSPEED ERROR
DTC P1507: IDLE AIR CONTROL (IAC) UNDERSPEED ERROR
| Description | This DTC is set when the powertrain control module (PCM) detects an engine idle speed that is less than the desired RPM. | ||
|---|---|---|---|
| Possible Causes | IAC circuit open Air inlet is plugged Damaged or incorrect IAC valve IAC valve stuck closed VPWR to IAC solenoid open IAC circuit short to voltage | ||
| Diagnostic Aids | Disconnect the IAC valve and look for little or no change in engine RPM as an indication of a stuck or damaged valve. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KE . | ||
P1507 - IDLE AIR CONTROL (IAC) UNDERSPEED ERROR
DTC P1512: INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK CLOSED (BANK 1)
| Description | This DTC is set when the vacuum actuated IMRC is commanded open, but the IMRC monitor indicates closed. | ||
|---|---|---|---|
| Possible Causes | IMRC monitor circuit open Suspect IMRC solenoid Mechanical concern - bind, seize, damage, or obstruction of IMRC hardware | ||
| Diagnostic Aids | Monitor the IMRC and IMRCM PIDs. The IMRCM state should change when the IMRC is commanded open or closed. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | ||
P1512 - INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK CLOSED (BANK 1)
DTC P1513: INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK CLOSED (BANK 2)
| Description | This DTC is set when the vacuum actuated IMRC is commanded open, but the IMRC monitor indicates closed. | ||
|---|---|---|---|
| Possible Causes | IMRC monitor circuit open Suspect IMRC solenoid Mechanical concern - bind, seize, damage, or obstruction of IMRC hardware | ||
| Diagnostic Aids | Monitor the IMRC and IMRCM PIDs. The IMRCM state should change when the IMRC is commanded open or closed. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | ||
P1513 - INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK CLOSED (BANK 2)
DTC P1516: INTAKE MANIFOLD RUNNER CONTROL (IMRC) INPUT ERROR (BANK 1)
| Description | The IMRC system is monitored for failure during continuous or key on engine off (KOEO) self-test. Each DTC distinguishes the corresponding failed bank for IMRC actuator assemblies with dual monitor switches. The test fails when the signal is outside an expected calibrated range. | ||
|---|---|---|---|
| Possible Causes | Mechanical concern - bind, seize, damage, or obstruction of IMRC hardware | ||
| Diagnostic Aids | Monitor the IMRC and IMRCM PIDs. The IMRCM state should change when the IMRC is commanded open or closed. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | GO to Pinpoint Test HU . | |
P1516 - INTAKE MANIFOLD RUNNER CONTROL (IMRC) INPUT ERROR (BANK 1)
DTC P1517: INTAKE MANIFOLD RUNNER CONTROL (IMRC) INPUT ERROR (BANK 2)
| Description | The IMRC system is monitored for failure during continuous or key on engine off (KOEO) self-test. Each DTC distinguishes the corresponding failed bank for IMRC actuator assemblies with dual monitor switches. The test fails when the signal is outside an expected calibrated range. | ||
|---|---|---|---|
| Possible Causes | Mechanical concern - bind, seize, damage, or obstruction of IMRC hardware | ||
| Diagnostic Aids | Monitor the IMRC and IMRCM PIDs. The IMRCM state should change when the IMRC is commanded open or closed. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | GO to Pinpoint Test HU . | |
P1517 - INTAKE MANIFOLD RUNNER CONTROL (IMRC) INPUT ERROR (BANK 2)
DTC P1518: INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK OPEN BANK 1
| Description | This DTC is set when the electrically actuated IMRC is commanded closed, but the IMRC monitor indicates open. | ||
|---|---|---|---|
| Possible Causes | IMRC monitor signal circuit shorted to PWR GND or SIG RTN Damaged IMRC actuator | ||
| Diagnostic Aids | Monitor the IMRC and IMRCM PIDs. The IMRCM state should change when the IMRC is commanded open or closed. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | ||
P1518 - INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK OPEN BANK 1
DTC P1519: INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK CLOSED BANK 1
| Description | This DTC is set when the electrically actuated IMRC is commanded open, but the IMRC monitor indicates closed. | ||
|---|---|---|---|
| Possible Causes | IMRC monitor circuit open IMRC control circuit open IMRC monitor circuit short to VREF IMRC monitor return circuit open Damaged IMRC actuator IMRC VPWR circuit open | ||
| Diagnostic Aids | Monitor the IMRC and IMRCM PIDs. The IMRCM state should change when the IMRC is commanded open or closed. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | ||
P1519 - INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK CLOSED BANK 1
DTC P151A: INTAKE MANIFOLD RUNNER CONTROLLER PERFORMANCE
| Description | The intake manifold runner control (IMRC) system is monitored for failures. The test fails when the system detects a loss of bidirectional communication or signals between the PCM and the IMRC solenoid. | ||
|---|---|---|---|
| Possible Causes | IMRC control circuit open Mechanical concern - bind, seize, damage, or obstruction of IMRC hardware IMRC control circuit short to voltage IMRC VPWR circuit open IMRC GND circuit open Damaged IMRC actuator | ||
| Diagnostic Aids | View the IMRCF PID to monitor for a fault. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | ||
P151A - INTAKE MANIFOLD RUNNER CONTROLLER PERFORMANCE
DTC P1520: INTAKE MANIFOLD RUNNER CONTROL (IMRC) CIRCUIT
| Description | This DTC indicates a failure in the IMRC primary control circuit. | ||
|---|---|---|---|
| Possible Causes | IMRC control circuit open | ||
| Diagnostic Aids | Monitor the IMRC and IMRCM PIDs. The IMRCM state should change when the IMRC is commanded open or closed. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | ||
P1520 - INTAKE MANIFOLD RUNNER CONTROL (IMRC) CIRCUIT
DTC P1537: INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK OPEN (BANK 1)
| Description | This DTC is set when the vacuum actuated IMRC is commanded closed, but the IMRC monitor indicates open. | ||
|---|---|---|---|
| Possible Causes | IMRC monitor signal circuit shorted to PWR GND or SIG RTN Damaged IMRC solenoid Blocked vacuum hoses | ||
| Diagnostic Aids | Monitor the IMRC and IMRCM PIDs. The IMRCM state should change when the IMRC is commanded open or closed. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | ||
P1537 - INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK OPEN (BANK 1)
DTC P1538: INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK OPEN (BANK 2)
| Description | This DTC is set when the vacuum actuated IMRC is commanded closed, but the IMRC monitor indicates open. | ||
|---|---|---|---|
| Possible Causes | IMRC monitor signal circuit shorted to PWR GND or SIG RTN Damaged IMRC solenoid Blocked vacuum hoses | ||
| Diagnostic Aids | Monitor the IMRC and IMRCM PIDs. The IMRCM state should change when the IMRC is commanded open or closed. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | ||
P1538 - INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK OPEN (BANK 2)
DTC P1549: INTAKE MANIFOLD COMMUNICATION CONTROL (IMCC) CIRCUIT (BANK 1)
| Description | The IMCC or intake manifold tuning (IMTV) system is monitored for failure during continuous or key on engine off (KOEO) self-test. The test fails when the powertrain control module (PCM) detects a concern with the IMTV output circuit. | ||
|---|---|---|---|
| Possible Causes | Open IMTV circuit Open VPWR circuit Shorted IMTV circuit Damaged IMTV | ||
| Diagnostic Aids | An IMTV fault PID (IMTVF) displaying YES may indicate a fault. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | GO to Pinpoint Test HU . | |
P1549 - INTAKE MANIFOLD COMMUNICATION CONTROL (IMCC) CIRCUIT (BANK 1)
DTC P1550: POWER STEERING PRESSURE (PSP) SENSOR OUT OF SELF-TEST RANGE
| Description | The PSP sensor input signal to the powertrain control module (PCM) is continuously monitored. The test fails when the signal falls out of a maximum or minimum calibrated range. | ||
|---|---|---|---|
| Possible Causes | Steering wheel not turned during self-test. PSP sensor or circuit damaged Power steering concern | ||
| Diagnostic Aids | The DTC indicates the PSP sensor is out of self-test range. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DT . | GO to Pinpoint Test DT . | |
P1550 - POWER STEERING PRESSURE (PSP) SENSOR OUT OF SELF-TEST RANGE
DTC P1565: SPEED CONTROL COMMAND SWITCH OUT OF RANGE HIGH
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate SPEED CONTROL article . | ||
P1565 - SPEED CONTROL COMMAND SWITCH OUT OF RANGE HIGH
DTC P1566: SPEED CONTROL COMMAND SWITCH OUT OF RANGE LOW
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate SPEED CONTROL article . | ||
P1566 - SPEED CONTROL COMMAND SWITCH OUT OF RANGE LOW
DTC P1567: SPEED CONTROL OUTPUT CIRCUIT
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate SPEED CONTROL article . | ||
P1567 - SPEED CONTROL OUTPUT CIRCUIT
DTC P1568: SPEED CONTROL UNABLE TO HOLD SPEED
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate SPEED CONTROL article . | ||
P1568 - SPEED CONTROL UNABLE TO HOLD SPEED
DTC P1572: BRAKE PEDAL SWITCH CIRCUIT
| Description | Indicates the brake input rationality test for brake pedal position (BPP) and brake pressure switch (BPS) has failed. One or both inputs to the powertrain control module (PCM) did not change state when expected. On some vehicles with stability assist, the BPP switch is connected to the anti-lock brake system (ABS) module and the ABS generates a driver brake application (DBA) signal, which is then sent to the PCM. | ||
|---|---|---|---|
| Possible Causes | Misadjusted brake switches, BPP or BPS Blown fuse Damaged BPP switch Damaged BPS switch Open or short in the BPP circuit Open or short in the DBA circuit Open or short in the BPS circuit | ||
| Diagnostic Aids | DTC P1572 is set when the PCM does not sense the proper sequence of the brake pedal input signal from both the BPP and BPS switches when the brake pedal is pressed and released. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test FD . | ||
P1572 - BRAKE PEDAL SWITCH CIRCUIT
DTC P1582: ELECTRONIC THROTTLE MONITOR DATA AVAILABLE
| Description | Indicates the actuation of restraint deployment, and the availability of electronic throttle monitor data. | ||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | The DTC only indicates the actuation of the restraint deployment system. Do not install a new powertrain control module (PCM), because there is no concern indicated. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the Description, Possible Causes and Diagnostic Aids for the DTC. | ||
P1582 - ELECTRONIC THROTTLE MONITOR DATA AVAILABLE
DTC P1633: KEEP ALIVE POWER (KAPWR) VOLTAGE TOO LOW
| Description | Indicates the KAPWR circuit has experienced a voltage interrupt. | ||
|---|---|---|---|
| Possible Causes | Open KAPWR circuit Intermittent KAPWR | ||
| Diagnostic Aids | Loss of KAPWR to the powertrain control module (PCM) results in immediate malfunction indicator lamp (MIL) illumination and DTC P1633. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test QB . | ||
P1633 - KEEP ALIVE POWER (KAPWR) VOLTAGE TOO LOW
DTC P1635: TIRE/AXLE RATIO OUT OF ACCEPTABLE RANGE
| Description | This DTC indicates the tire and axle information contained in the vehicle ID block (VID) does not match the vehicle hardware. | ||
|---|---|---|---|
| Possible Causes | Incorrect tire size Incorrect axle ratio Incorrect VID configuration parameters | ||
| Diagnostic Aids | Using the diagnostic tool, view the tire and axle parameters within the VID. They must match the vehicle hardware. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the Description, Possible Causes and Diagnostic Aids for the DTC. | ||
P1635 - TIRE/AXLE RATIO OUT OF ACCEPTABLE RANGE
DTC P1636: INDUCTIVE SIGNATURE CHIP COMMUNICATION ERROR
| Description | Indicates the powertrain control module (PCM) has lost communication with the inductive signature chip. | ||
|---|---|---|---|
| Possible Causes | Damaged PCM | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | DTC P1636 indicates the PCM has lost communication with the inductive signature chip. Install a new PCM. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) . | ||
P1636 - INDUCTIVE SIGNATURE CHIP COMMUNICATION ERROR
DTC P1639: VEHICLE ID (VID) BLOCK CORRUPTED, NOT PROGRAMMED
| Description | This DTC indicates the VID block is not programmed or the information within is corrupt. | ||
|---|---|---|---|
| Possible Causes | New powertrain control module (PCM) Incorrect PCM Incorrect VID configuration | ||
| Diagnostic Aids | Program the PCM to the most recent calibration available. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | The VID block must be programmed. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) . | ||
P1639 - VEHICLE ID (VID) BLOCK CORRUPTED, NOT PROGRAMMED
DTC P1640: POWERTRAIN DTCS AVAILABLE IN ANOTHER MODULE
| Description | Vehicles using a secondary engine control module can request that the powertrain control module (PCM) illuminates the malfunction indicator lamp (MIL) when a failure occurs which affects emissions. | ||
|---|---|---|---|
| Possible Causes | DTCs stored in a secondary module, which requested the MIL to be turned on | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the Description, Possible Causes and Diagnostic Aids for the DTC. | ||
P1640 - POWERTRAIN DTCS AVAILABLE IN ANOTHER MODULE
DTC P1641: FUEL PUMP PRIMARY CIRCUIT
| For Vehicles Equipped With a FPDM | |||
|---|---|---|---|
| Description | See the description for DTC P1235/P1236. | ||
| Possible Causes | See the possible causes for DTC P1235/P1236. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P1235/P1236. | ||
| For All Others | |||
| Description | See the description for DTC P0230. | ||
| Possible Causes | See the possible causes for DTC P0230. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P0230. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles Equipped With a FPDM | GO to Pinpoint Test KB . | ||
| All others | GO to Pinpoint Test KA . | ||
P1641 - FUEL PUMP PRIMARY CIRCUIT
DTC P1650: POWER STEERING PRESSURE (PSP) SWITCH OUT OF SELF-TEST RANGE
| Description | In the key on engine off (KOEO) self-test, this DTC indicates the PSP input to the PCM is high. In the key on engine running (KOER) self-test, this DTC indicates the PSP input did not change state. | ||
|---|---|---|---|
| Possible Causes | The steering wheel must be turned during KOER self-test PSP switch/shorting bar damaged SIG RTN circuit open PSP circuit open or shorted to SIGRTN | ||
| Diagnostic Aids | Check if the vehicle was towed or a power steering repair was carried out. Observe the PSP V PID while checking the wires for intermittent concerns. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test FF . | GO to Pinpoint Test FF . | |
P1650 - POWER STEERING PRESSURE (PSP) SWITCH OUT OF SELF-TEST RANGE
DTC P1651: POWER STEERING PRESSURE (PSP) SWITCH INPUT
| Description | The powertrain control module (PCM) counts the number of vehicle speed transitions from 0 to a calibrated speed. After a calibrated number of speed transitions, the PCM expects the PSP input to change. This DTC is set if the transition is not detected. | ||
|---|---|---|---|
| Possible Causes | Vehicle towed with the engine running The power steering hydraulic concern was repaired but the DTC was not erased PSP switch/shorting bar damaged SIG RTN circuit open PSP circuit open or shorted to SIGRTN | ||
| Diagnostic Aids | Check if the vehicle was towed or a power steering repair was carried out. Observe the PSP V PID while checking the wires for intermittent concerns. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test FF . | ||
P1651 - POWER STEERING PRESSURE (PSP) SWITCH INPUT
DTC P1674: CONTROL MODULE SOFTWARE CORRUPTED
| Description | Indicates an error occurred in the powertrain control module (PCM). This DTC is set in combination with P2105. | ||
|---|---|---|---|
| Possible Causes | Software incompatibility issue Damaged PCM | ||
| Diagnostic Aids | Verify the PCM is at the latest calibration level. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test QE . | ||
P1674 - CONTROL MODULE SOFTWARE CORRUPTED
DTC P1703: BRAKE SWITCH OUT OF SELF-TEST RANGE
| Description | Indicates that during key on engine off (KOEO) self-test, the brake pedal position (BPP) signal was high, or during key on engine running (KOER) self-test, the BPP signal did not cycle high and low. | ||
|---|---|---|---|
| Possible Causes | Open or short in the BPP circuit Open or short in the stoplamp circuits Concern in module(s) connected to the BPP circuit Damaged brake switch Misadjusted brake switch | ||
| Diagnostic Aids | Check for correct function of the stoplamps. Using the diagnostic tool, check the BPP PID. The stoplamps and PID should toggle on and off with brake pedal activation. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Freestar/Monterey, 2006 Town Car | Verify the brake pedal was applied and released during the KOER self-test. For additional concerns, refer to the appropriate EXTERIOR LIGHTING article . | ||
| Expedition, Navigator | Verify the brake pedal was applied and released during the KOER self-test. For additional concerns, refer to the appropriate VEHICLE DYNAMIC SYSTEMS article . | ||
| All others | GO to Pinpoint Test FD . | ||
P1703 - BRAKE SWITCH OUT OF SELF-TEST RANGE
DTC P1705: TRANSMISSION RANGE SENSOR OUT OF SELF-TEST RANGE
| Description | The transmission range circuit is not indicating PARK/NEUTRAL during self-test. | ||
|---|---|---|---|
| Possible Causes | Gear selector not in PARK/NEUTRAL | ||
| Diagnostic Aids | Verify the gear selector is in PARK/NEUTRAL. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P1705 - TRANSMISSION RANGE SENSOR OUT OF SELF-TEST RANGE
DTC P1709: PARK/NEUTRAL POSITION (PNP) SWITCH OUT OF SELF-TEST RANGE
| Description | This DTC indicates that the voltage is high when it should be low. | ||
|---|---|---|---|
| Possible Causes | PNP/CPP circuit short to PWR Damaged PNP or CPP switch PNP/CPP circuit open in the SIGRTN | ||
| Diagnostic Aids | When activating either the PNP or CPP switch, the voltage should cycle from 5 volts to low. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P1709 - PARK/NEUTRAL POSITION (PNP) SWITCH OUT OF SELF-TEST RANGE
DTC P1729: 4X4L SWITCH CIRCUIT MALFUNCTION
| Description | The 4x4L switch is an on/off switch. If the powertrain control module (PCM) does not sense appropriate voltage when the switch is cycled on and off, a DTC sets for mechanical shift on the fly systems. | ||
|---|---|---|---|
| Possible Causes | The 4x4L harness between the PCM and the 4x4L switch is open or shorted Damaged 4x4L switch | ||
| Diagnostic Aids | Verify the 4x4L switch cycles on/off. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate FOUR-WHEEL DRIVE SYSTEMS article . | ||
P1729 - 4X4L SWITCH CIRCUIT MALFUNCTION
DTC P1780: TRANSMISSION CONTROL SWITCH (TCS) OUT OF SELF-TEST RANGE
| Description | During key on engine running (KOER) self-test the TCS must be cycled, or a DTC is set. | ||
|---|---|---|---|
| Possible Causes | TCS not cycled during the self-test. TCS circuit short or open Damaged TCS switch | ||
| Diagnostic Aids | Verify the TCS switch cycles on/off. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test TB . | ||
P1780 - TRANSMISSION CONTROL SWITCH (TCS) OUT OF SELF-TEST RANGE
DTC P1781: 4X4L SWITCH OUT OF SELF-TEST RANGE
| Description | The 4x4L switch is an on/off switch. If the powertrain control module (PCM) does not sense low voltage when the switch is on, the DTC sets. | ||
|---|---|---|---|
| Possible Causes | 4x4L harness open or shorted Damaged electronic shift module | ||
| Diagnostic Aids | Verify the 4x4L switch cycles on/off. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate FOUR-WHEEL DRIVE SYSTEMS article . | ||
P1781 - 4X4L SWITCH OUT OF SELF-TEST RANGE
DTC P17XX
Note. 'x' equals any number 0 through 9 or letter A through F.
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P17XX
DTC P18xx
Note. 'x' equals any number 0 through 9 or letter A through F.
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate FOUR-WHEEL DRIVE SYSTEMS article . | ||
P18xx
DTC P1900: OUTPUT SHAFT SPEED (OSS) SENSOR CIRCUIT INTERMITTENT
| Description | The OSS sensor signal to the powertrain control module (PCM) is irregular or interrupted. | ||
|---|---|---|---|
| Possible Causes | Harness connector not properly seated Harness intermittently shorted or open Harness connector damaged OSS sensor damaged, or not installed properly | ||
| Diagnostic Aids | Verify harness and connector integrity. Verify proper installation of the OSS sensor. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Manual transmission | GO to Pinpoint Test DP . | ||
| All others | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P1900 - OUTPUT SHAFT SPEED (OSS) SENSOR CIRCUIT INTERMITTENT
DTC P1901: TURBINE SHAFT SPEED (TSS) SENSOR CIRCUIT INTERMITTENT
| Description | The TSS sensor signal to the powertrain control module (PCM) is irregular or interrupted. | ||
|---|---|---|---|
| Possible Causes | Harness connector not properly seated Harness intermittently shorted or open Harness connector damaged TSS sensor damaged or not installed properly | ||
| Diagnostic Aids | Verify harness and connector integrity. Verify proper installation of the TSS sensor. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate AUTOMATIC TRANSAXLE/TRANSMISSION article . | ||
P1901 - TURBINE SHAFT SPEED (TSS) SENSOR CIRCUIT INTERMITTENT
DTC P1910: REVERSE LAMP CONTROL CIRCUIT CONDITION
| Description | Indicates a reverse lamp control circuit condition was sensed by the powertrain control module (PCM). | ||
|---|---|---|---|
| Possible Causes | Open in the circuit Short to ground / voltage | ||
| Diagnostic Aids | Check the operation of the reverse lights. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate EXTERIOR LIGHTING article . | ||
P1910 - REVERSE LAMP CONTROL CIRCUIT CONDITION
DTC P2004: INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK OPEN (BANK 1)
| Description | This DTC is set when the IMRC is commanded closed, but the IMRC monitor indicates open. This DTC replaces P1518 and P1537. | ||
|---|---|---|---|
| Possible Causes | IMRC monitor signal circuit shorted to PWR GND or SIG RTN Damaged IMRC actuator or solenoid Blocked vacuum hoses | ||
| Diagnostic Aids | Monitor the IMRC and IMRCM PIDs. The IMRCM state should change when the IMRC is commanded open or closed. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | ||
P2004 - INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK OPEN (BANK 1)
DTC P2005: INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK OPEN (BANK 2)
| Description | This DTC is set when the IMRC is commanded closed, but the IMRC monitor indicates open. This DTC replaces P1538. | ||
|---|---|---|---|
| Possible Causes | IMRC monitor signal circuit shorted to PWR GND or SIG RTN Damaged IMRC actuator or solenoid Damaged PCM Blocked vacuum hoses | ||
| Diagnostic Aids | An IMRCM PID reading near approximately 1 volt at closed throttle may indicate a fault. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | ||
P2005 - INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK OPEN (BANK 2)
DTC P2006: INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK CLOSED (BANK 1)
| Description | This DTC is set when the IMRC is commanded open, but the IMRC monitor indicates closed. This DTC replaces P1512 and P1519. | ||
|---|---|---|---|
| Possible Causes | IMRC monitor circuit open IMRC control circuit open IMRC monitor circuit short to VREF Damaged IMRC actuator or solenoid | ||
| Diagnostic Aids | Monitor the IMRC and IMRCM PIDs. The IMRCM state should change when the IMRC is commanded open or closed. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | ||
P2006 - INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK CLOSED (BANK 1)
DTC P2007: INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK CLOSED (BANK 2)
| Description | This DTC is set when the IMRC is commanded open, but the IMRC monitor indicates closed. This DTC replaces P1513. | ||
|---|---|---|---|
| Possible Causes | IMRC monitor circuit open IMRC control circuit open IMRC monitor circuit short to VREF Damaged IMRC actuator or solenoid | ||
| Diagnostic Aids | Monitor the IMRC and IMRCM PIDs. The IMRCM state should change when the IMRC is commanded open or closed. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | ||
P2007 - INTAKE MANIFOLD RUNNER CONTROL (IMRC) STUCK CLOSED (BANK 2)
DTC P2008: INTAKE MANIFOLD RUNNER CONTROL (IMRC) CIRCUIT OPEN (BANK 1)
| Description | This DTC indicates a failure in the IMRC primary control circuit. This DTC replaces P1520. | ||
|---|---|---|---|
| Possible Causes | IMRC control circuit open | ||
| Diagnostic Aids | Monitor the IMRC and IMRCM PIDs. The IMRCM state should change when the IMRC is commanded open or closed. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | ||
P2008 - INTAKE MANIFOLD RUNNER CONTROL (IMRC) CIRCUIT OPEN (BANK 1)
DTC P2014: INTAKE MANIFOLD RUNNER POSITION SENSOR/SWITCH CIRCUIT (BANK 1)
| Description | The intake manifold runner control (IMRC) system is monitored for failure during continuous or key on engine off (KOEO) self-test. Each DTC distinguishes the corresponding failed bank for IMRC actuator assemblies with dual monitor switches. The test fails when the signal on the monitor pin is outside an expected calibrated range. This DTC replaces P1516. | ||
|---|---|---|---|
| Possible Causes | IMRC monitor circuit open Mechanical concern - bind, seize, damage or obstruction of IMRC hardware | ||
| Diagnostic Aids | Monitor the IMRC and IMRCM PIDs. The IMRCM state should change when the IMRC is commanded open or closed. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | ||
P2014 - INTAKE MANIFOLD RUNNER POSITION SENSOR/SWITCH CIRCUIT (BANK 1)
DTC P2015: INTAKE MANIFOLD RUNNER POSITION SENSOR/SWITCH CIRCUIT RANGE/PERFORMANCE (BANK 1)
| Description | The intake manifold runner control (IMRC) system is monitored for failures. Each DTC distinguishes the corresponding failed bank. The test fails when the system detects the presence of a broken or persistently out of range linkage. | ||
|---|---|---|---|
| Possible Causes | Mechanical concern - bind, seize, damage, or obstruction of IMRC hardware | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | ||
P2015 - INTAKE MANIFOLD RUNNER POSITION SENSOR/SWITCH CIRCUIT RANGE/PERFORMANCE (BANK 1)
DTC P2019: INTAKE MANIFOLD RUNNER POSITION SENSOR/SWITCH CIRCUIT (BANK 2)
| Description | The intake manifold runner control (IMRC) system is monitored for failure during continuous or key on engine off (KOEO) self-test. Each DTC distinguishes the corresponding failed bank for IMRC actuator assemblies with dual monitor switches. The test fails when the signal on the monitor pin is outside an expected calibrated range. This DTC replaces P1517. | ||
|---|---|---|---|
| Possible Causes | IMRC monitor circuit open Mechanical concern - bind, seize, damage or obstruction of IMRC hardware | ||
| Diagnostic Aids | Monitor the IMRC and IMRCM PIDs. The IMRCM state should change when the IMRC is commanded open or closed. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | ||
P2019 - INTAKE MANIFOLD RUNNER POSITION SENSOR/SWITCH CIRCUIT (BANK 2)
DTC P2020: INTAKE MANIFOLD RUNNER POSITION SENSOR/SWITCH CIRCUIT RANGE/PERFORMANCE (BANK 2)
| Description | See the description for DTC P2015. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P2015. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | ||
P2020 - INTAKE MANIFOLD RUNNER POSITION SENSOR/SWITCH CIRCUIT RANGE/PERFORMANCE (BANK 2)
DTC P2065: FUEL LEVEL SENSOR B CIRCUIT
| Description | Fuel level information is sent to the powertrain control module (PCM) on the communication link. | ||
|---|---|---|---|
| Possible Causes | Communication link concern Damaged instrument cluster Damaged smart junction box (SJB) Damaged PCM | ||
| Diagnostic Aids | Refer to the appropriate INSTRUMENT CLUSTER article for fuel level indicator diagnosis. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate INSTRUMENT CLUSTER article for fuel level indicator diagnosis. | ||
P2065 - FUEL LEVEL SENSOR B CIRCUIT
DTC P2066: FUEL LEVEL SENSOR B CIRCUIT RANGE/PERFORMANCE
| Description | See the description for DTC P2065. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P2065. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P2065. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate INSTRUMENT CLUSTER article for fuel level indicator diagnosis. | ||
P2066 - FUEL LEVEL SENSOR B CIRCUIT RANGE/PERFORMANCE
DTC P2067: FUEL LEVEL SENSOR B CIRCUIT LOW
| Description | See the description for DTC P2065. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P2065. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P2065. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate INSTRUMENT CLUSTER article for fuel level indicator diagnosis. | ||
P2067 - FUEL LEVEL SENSOR B CIRCUIT LOW
DTC P2068: FUEL LEVEL SENSOR B CIRCUIT HIGH
| Description | See the description for DTC P2065. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P2065. | ||
| Diagnostic Aids | See the diagnostic aids for DTC P2065. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate INSTRUMENT CLUSTER article for fuel level indicator diagnosis. | ||
P2068 - FUEL LEVEL SENSOR B CIRCUIT HIGH
DTC P2070: INTAKE MANIFOLD TUNING VALVE (IMTV) STUCK OPEN BANK 1
| Description | The IMTV system is monitored for failure during continuous, key on engine off (KOEO), or key on engine running (KOER) self-tests. The test fails when the signal is more or less than an expected calibrated range. | ||
|---|---|---|---|
| Possible Causes | IMTV signal circuit shorted to PWR GND or SIG RTN Damaged IMRC actuator | ||
| Diagnostic Aids | An IMTVM PID reading may indicate a fault. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | GO to Pinpoint Test HU . | |
P2070 - INTAKE MANIFOLD TUNING VALVE (IMTV) STUCK OPEN BANK 1
DTC P2071: INTAKE MANIFOLD TUNING VALVE (IMTV) STUCK CLOSED BANK 1
| Description | The IMTV system is monitored for failure during continuous, key on engine off (KOEO), or key on engine running (KOER) self-tests. The test fails when the signal is more or less than an expected calibrated range. | ||
|---|---|---|---|
| Possible Causes | IMTV signal circuit shorted to PWR GND or SIG RTN Damaged IMRC actuator IMTV circuit open | ||
| Diagnostic Aids | An IMTVM PID reading may indicate a fault. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HU . | GO to Pinpoint Test HU . | |
P2071 - INTAKE MANIFOLD TUNING VALVE (IMTV) STUCK CLOSED BANK 1
DTC P2072: THROTTLE ACTUATOR CONTROL SYSTEM - ICE BREAKAGE
| Description | This DTC only identifies that the strategy has carried out several open and close cycles to remove potential ice build up. The DTC does not imply any system concerns, only that the mode has occurred, and that mode may be causing a long start time. | ||
|---|---|---|---|
| Possible Causes | Ice or oil in the induction system could be the result of a positive crankcase ventilation (PCV) system concern | ||
| Diagnostic Aids | Check the PCV system for evidence of water or ice. Disconnect the air induction fresh air plenum from the throttle body. Check for water or oily residue at the PCV fresh air port. Disconnect the tube at the valve cover and check the tube for ice obstruction/ice. Start the engine and, to check the PCV system, place a piece of cardboard on the crankcase vent in the rocker cover. If the cardboard is held on the crankcase vent and fumes are not exiting, reconnect the tube to the valve cover and the air induction port. If the test passes, the PCV system is OK. If the cardboard is not held in place, turn off the engine and check the PCV valve side of the system for ice or obstruction and repair as necessary. If no obstruction is found there, isolate and repair any obstruction in the intake manifold connection. If no obstruction is found there, make sure the PCV coolant heater is functional and repair as necessary. If no concern is present, make sure the PCV valve is allowing the proper vacuum flow and repair as necessary. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the Description, Possible Causes and Diagnostic Aids for the DTC. | ||
P2072 - THROTTLE ACTUATOR CONTROL SYSTEM - ICE BREAKAGE
DTC P2100: THROTTLE ACTUATOR CONTROL (TAC) MOTOR CIRCUIT/OPEN
| Description | A powertrain control module (PCM) fault flag is set indicating the motor circuit is open. May require cycling the key. | ||
|---|---|---|---|
| Possible Causes | TAC motor has an open winding TAC motor is damaged TAC motor harness is open TAC motor harness is shorted to PWR TAC motor harness circuits are shorted together TAC motor harness connector is unplugged | ||
| Diagnostic Aids | A TAC motor circuit PID reading may indicate a concern, if available. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DV . | ||
P2100 - THROTTLE ACTUATOR CONTROL (TAC) MOTOR CIRCUIT/OPEN
DTC P2101: THROTTLE ACTUATOR CONTROL (TAC) MOTOR RANGE/PERFORMANCE
| Description | A powertrain control module (PCM) fault flag is set indicating the motor circuit is open, and may require cycling the key. | ||
|---|---|---|---|
| Possible Causes | TAC motor circuits are cross-wired | ||
| Diagnostic Aids | A TAC motor circuit PID reading may indicate a concern, if available. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DV . | ||
P2101 - THROTTLE ACTUATOR CONTROL (TAC) MOTOR RANGE/PERFORMANCE
DTC P2104: THROTTLE ACTUATOR CONTROL (TAC) SYSTEM - FORCED IDLE
| Description | The TAC system is in the failure mode effects management (FMEM) mode of forced idle. | ||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | This DTC is an informational DTC and may be set in combination with a number of other DTCs which are causing the FMEM. Diagnose other DTCs first. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test QE . | ||
P2104 - THROTTLE ACTUATOR CONTROL (TAC) SYSTEM - FORCED IDLE
DTC P2105: THROTTLE ACTUATOR CONTROL (TAC) SYSTEM - FORCED ENGINE SHUTDOWN
| Description | The TAC system is in the failure mode effects management (FMEM) mode of forced engine shutdown. | ||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | This DTC is an informational DTC and may be set in combination with a number of other DTCs which are causing the FMEM. Diagnose other DTCs first. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test QE . | ||
P2105 - THROTTLE ACTUATOR CONTROL (TAC) SYSTEM - FORCED ENGINE SHUTDOWN
DTC P2106: THROTTLE ACTUATOR CONTROL (TAC) SYSTEM - FORCED LIMITED POWER
| Description | The TAC system is in the failure mode effects management (FMEM) mode of forced limited power. This DTC indicates the FMEM action is in effect due to a concern in an electronic throttle control (ETC) related component or module. | ||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | This DTC is an informational DTC and may be set in combination with a number of other DTCs which are causing the FMEM. Diagnose other DTCs first. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test QE . | ||
P2106 - THROTTLE ACTUATOR CONTROL (TAC) SYSTEM - FORCED LIMITED POWER
DTC P2107: THROTTLE ACTUATOR CONTROL (TAC) MOTOR PROCESSOR
| Description | The electronic throttle control (ETC) area of the powertrain control module (PCM) failed the self-test. The concern could be the result of an incorrect throttle position (TP) command, or TAC motor wires shorted together. | ||
|---|---|---|---|
| Possible Causes | TAC motor wire shorted together TAC motor circuit wires shorted to PWR Damaged electronic throttle body (ETB) Damaged PCM | ||
| Diagnostic Aids | A TAC motor circuit PID reading may indicate a concern, if available. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DV . | ||
P2107 - THROTTLE ACTUATOR CONTROL (TAC) MODULE PROCESSOR
DTC P2110: THROTTLE ACTUATOR CONTROL (TAC) SYSTEM - FORCED LIMITED RPM
| Description | The TAC system is in the failure mode effects management (FMEM) mode of forced limited RPM. | ||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | This DTC is an informational DTC and may be set in combination with a number of other DTCs which are causing the FMEM. Diagnose other DTCs first. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test QE . | ||
P2110 - THROTTLE ACTUATOR CONTROL (TAC) SYSTEM - FORCED LIMITED RPM
DTC P2111: THROTTLE ACTUATOR CONTROL (TAC) SYSTEM - STUCK OPEN
| Description | This powertrain control module (PCM) fault status indicates the throttle plate is at a greater angle than commanded. | ||
|---|---|---|---|
| Possible Causes | Binding throttle body, stuck open TAC motor circuits are cross-wired TAC motor harness circuits are shorted together Damaged PCM | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DV . | ||
P2111 - THROTTLE ACTUATOR CONTROL (TAC) SYSTEM - STUCK OPEN
DTC P2112: THROTTLE ACTUATOR CONTROL (TAC) SYSTEM - STUCK CLOSED.
| Description | This powertrain control module (PCM) fault status indicates the throttle plate is at a lower angle than commanded. | ||
|---|---|---|---|
| Possible Causes | Binding throttle body, stuck closed Damaged PCM | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DV . | ||
P2112 - THROTTLE ACTUATOR CONTROL (TAC) SYSTEM - STUCK CLOSED
DTC P2121: THROTTLE/PEDAL POSITION SENSOR/SWITCH D CIRCUIT RANGE/PERFORMANCE
| Description | The accelerator pedal position (APP) sensor fault flag is set for sensor 1 by the powertrain control module (PCM), indicating the signal is out of the normal self-test operating range. | ||
|---|---|---|---|
| Possible Causes | APP sensor 1 is open, or shorted to ground or voltage APP sensor signal circuits are shorted together Damaged APP sensor Damaged PCM | ||
| Diagnostic Aids | An APP1 sensor PID reading may indicate a concern. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DK . | ||
P2121 - THROTTLE/PEDAL POSITION SENSOR/SWITCH D CIRCUIT RANGE/PERFORMANCE
DTC P2122: THROTTLE/PEDAL POSITION SENSOR/SWITCH D CIRCUIT LOW
| Description | The accelerator pedal position (APP) sensor 1 is out of self-test range low. | ||
|---|---|---|---|
| Possible Causes | APP sensor harness shorted to ground Damaged APP sensor | ||
| Diagnostic Aids | An APP1 sensor PID reading may indicate a concern. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DK . | ||
P2122 - THROTTLE/PEDAL POSITION SENSOR/SWITCH D CIRCUIT LOW
DTC P2123: THROTTLE/PEDAL POSITION SENSOR/SWITCH D CIRCUIT HIGH
| Description | The accelerator pedal position (APP) sensor 1 is out of self-test range high. | ||
|---|---|---|---|
| Possible Causes | APP sensor harness open APP sensor harness is shorted to VREF Damaged APP sensor | ||
| Diagnostic Aids | An APP1 sensor PID reading may indicate a concern. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DK . | ||
P2123 - THROTTLE/PEDAL POSITION SENSOR/SWITCH D CIRCUIT HIGH
DTC P2126: THROTTLE/PEDAL POSITION SENSOR/SWITCH E CIRCUIT RANGE/PERFORMANCE
| Description | The accelerator pedal position (APP) sensor fault flag is set for sensor 2 by the powertrain control module (PCM), indicating the signal is out of the normal self-test operating range. | ||
|---|---|---|---|
| Possible Causes | APP sensor assembly is binding Damaged APP sensor Damaged PCM | ||
| Diagnostic Aids | An APP2 sensor PID reading may indicate a concern. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DK . | ||
P2126 - THROTTLE/PEDAL POSITION SENSOR/SWITCH E CIRCUIT RANGE/PERFORMANCE
DTC P2127: THROTTLE/PEDAL POSITION SENSOR/SWITCH E CIRCUIT LOW
| Description | The accelerator pedal position (APP) sensor 2 is out of self-test range low. | ||
|---|---|---|---|
| Possible Causes | APP sensor circuit is shorted to ground APP sensor circuit is open Damaged APP sensor | ||
| Diagnostic Aids | An APP2 sensor PID reading may indicate a concern. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DK . | ||
P2127 - THROTTLE/PEDAL POSITION SENSOR/SWITCH E CIRCUIT LOW
DTC P2128: THROTTLE/PEDAL POSITION SENSOR/SWITCH E CIRCUIT HIGH
| Description | The accelerator pedal position (APP) sensor 2 is out of self-test range high. | ||
|---|---|---|---|
| Possible Causes | APP sensor assembly is binding APP sensor harness is shorted to voltage Damaged APP sensor | ||
| Diagnostic Aids | An APP2 sensor PID reading may indicate a concern. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DK . | ||
P2128 - THROTTLE/PEDAL POSITION SENSOR/SWITCH E CIRCUIT HIGH
DTC P2131: THROTTLE/PEDAL POSITION SENSOR/SWITCH F CIRCUIT RANGE/PERFORMANCE
| Description | The accelerator pedal position (APP) sensor fault flag is set for sensor 3 by the powertrain control module (PCM), indicating the signal is out of the normal self-test operating range. | ||
|---|---|---|---|
| Possible Causes | APP sensor assembly is binding Damaged APP sensor Damaged PCM | ||
| Diagnostic Aids | An APP3 sensor PID reading may indicate a concern. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DK . | ||
P2131 - THROTTLE/PEDAL POSITION SENSOR/SWITCH F CIRCUIT RANGE/PERFORMANCE
DTC P2132: THROTTLE/PEDAL POSITION SENSOR/SWITCH F CIRCUIT LOW
| Description | The accelerator pedal position (APP) sensor 3 is out of self-test range low. | ||
|---|---|---|---|
| Possible Causes | APP sensor assembly is binding APP sensor harness shorted to ground Damaged APP sensor | ||
| Diagnostic Aids | An APP3 sensor PID reading may indicate a concern. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DK . | ||
P2132 - THROTTLE/PEDAL POSITION SENSOR/SWITCH F CIRCUIT LOW
DTC P2133: THROTTLE/PEDAL POSITION SENSOR/SWITCH F CIRCUIT HIGH
| Description | The accelerator pedal position (APP) sensor 3 is out of self-test range high. | ||
|---|---|---|---|
| Possible Causes | APP sensor assembly is binding APP sensor harness is shorted to voltage Damaged APP sensor | ||
| Diagnostic Aids | An APP3 sensor PID reading may indicate a concern. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DK . | ||
P2133 - THROTTLE/PEDAL POSITION SENSOR/SWITCH F CIRCUIT HIGH
DTC P2135: THROTTLE/PEDAL POSITION SENSOR/SWITCH A/B VOLTAGE CORRELATION
| Description | The powertrain control module (PCM) flagged a concern indicating that throttle position (TP) 1 and TP2 disagree by more than a calibrated limit. | ||
|---|---|---|---|
| Possible Causes | TP sensor shorted internally to VREF TP sensor harness is shorted to voltage TP sensor signal wires are shorted together Damaged TP sensor | ||
| Diagnostic Aids | Compare the TP1 and TP2 PID values for a full sweep and correlation. Refer to the chart in pinpoint test DV. GO to Pinpoint Test DV . Check the wiring harness for an open or a short circuit. Check the TP sensor for an internal open or short circuit. If no circuit concerns are present, install a new TP sensor. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DV . | ||
P2135 - THROTTLE/PEDAL POSITION SENSOR/SWITCH A/B VOLTAGE CORRELATION
DTC P2195: O2 SENSOR SIGNAL BIASED/STUCK LEAN - BANK 1, SENSOR 1
| Description | A heated oxygen sensor (HO2S) indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time. | ||
|---|---|---|---|
| Possible Causes | Electrical: Short to VPWR in the harness or HO2S Water in the harness connector Open/shorted HO2S circuit Corrosion or incorrect harness connections Damaged HO2S Damaged powertrain control module (PCM) Fuel System: Excessive fuel pressure Leaking/contaminated fuel injectors Leaking fuel pressure regulator Low fuel pressure or running out of fuel Vapor recovery system Induction System: Air leaks after the mass air flow (MAF) sensor Vacuum leaks PCV system Improperly seated engine oil dipstick EGR System: Leaking gasket Stuck EGR valve Leaking diaphragm or EVR Base Engine: Oil overfill Camshaft timing Cylinder compression Exhaust leaks before or near the HO2S(s) | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test H . | GO to Pinpoint Test H . | |
P2195 - O2 SENSOR SIGNAL BIASED/STUCK LEAN - BANK 1, SENSOR 1
DTC P2196: O2 SENSOR SIGNAL BIASED/STUCK RICH - BANK 1, SENSOR 1
| Description | A heated oxygen sensor (HO2S) indicating rich at the end of a test is trying to correct for an over-lean condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P2195. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test H . | ||
P2196 - O2 SENSOR SIGNAL BIASED/STUCK RICH - BANK 1, SENSOR 1
DTC P2197: O2 SENSOR SIGNAL BIASED/STUCK LEAN - BANK 2, SENSOR 1
P2197 - O2 SENSOR SIGNAL BIASED/STUCK LEAN - BANK 2, SENSOR 1
DTC P2198: O2 SENSOR SIGNAL BIASED/STUCK RICH - BANK 2, SENSOR 1
| Description | See the description for DTC P2196. | ||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC P2195. | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test H . | ||
P2198 - O2 SENSOR SIGNAL BIASED/STUCK RICH - BANK 2, SENSOR 1
DTC P2257: SECONDARY AIR INJECTION (AIR) SYSTEM CONTROL A CIRCUIT LOW
| Description | The AIR system monitor circuit is low, indicating the secondary AIR pump is off although the secondary AIR pump was commanded on by the powertrain control module (PCM). | ||
|---|---|---|---|
| Possible Causes | Open B+ circuit Open VPWR circuit Open voltage circuit between the AIR relay and the secondary AIR pump Damaged AIR relay | ||
| Diagnostic Aids | The AIR monitor circuit PCM input contains a pull up voltage through a resistance internal to the PCM. This voltage is normally held low by the resistance path through the secondary AIR pump when the secondary AIR pump is off. A single electrical open circuit component such as an AIR relay coil in this multi-component circuit is not detected by the PCM output driver, yet it sets DTC P2257. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HM . | ||
P2257 - SECONDARY AIR INJECTION (AIR) SYSTEM CONTROL A CIRCUIT LOW
DTC P2258: SECONDARY AIR INJECTION (AIR) SYSTEM CONTROL A CIRCUIT HIGH
| Description | The AIR system monitor circuit is high, indicating the secondary AIR pump is on although the secondary AIR pump was commanded off by the powertrain control module (PCM). | ||
|---|---|---|---|
| Possible Causes | AIR relay fault - stuck closed Secondary AIR pump fault - circuit open in motor Open ground to secondary AIR pump Open AIR monitor circuit between the secondary AIR pump and the PCM Short to voltage in the AIR relay to secondary AIR pump voltage circuit | ||
| Diagnostic Aids | The AIR monitor circuit PCM input contains a pull up voltage through a resistance internal to the PCM. This voltage is normally held low by the resistance path through the secondary AIR pump when the secondary AIR pump is off. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HM . | ||
P2258 - SECONDARY AIR INJECTION (AIR) SYSTEM CONTROL A CIRCUIT HIGH
DTC P2270: O2 SENSOR SIGNAL STUCK LEAN - BANK 1, SENSOR 2
| Description | The downstream heated oxygen sensor (HO2S) is forced rich and lean and monitored by the powertrain control module (PCM). The test fails if the PCM does not detect the output of the HO2S in a calibrated amount of time. | ||
|---|---|---|---|
| Possible Causes | Pinched, shorted, and corroded wiring and pins Crossed HO2S wires Exhaust leaks Contaminated or damaged HO2S | ||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test H . | GO to Pinpoint Test H . | |
P2270 - O2 SENSOR SIGNAL STUCK LEAN - BANK 1, SENSOR 2
DTC P2271: O2 SENSOR SIGNAL STUCK RICH - BANK 1, SENSOR 2
P2271 - O2 SENSOR SIGNAL STUCK RICH - BANK 1, SENSOR 2
DTC P2272: O2 SENSOR SIGNAL STUCK LEAN - BANK 2, SENSOR 2
P2272 - O2 SENSOR SIGNAL STUCK LEAN - BANK 2, SENSOR 2
DTC P2273: O2 SENSOR SIGNAL STUCK RICH - BANK 2, SENSOR 2
P2273 - O2 SENSOR SIGNAL STUCK RICH - BANK 2, SENSOR 2
DTC P2274: O2 SENSOR SIGNAL STUCK LEAN - BANK 1, SENSOR 3
P2274 - O2 SENSOR SIGNAL STUCK LEAN - BANK 1, SENSOR 3
DTC P2275: O2 SENSOR SIGNAL STUCK RICH - BANK 1, SENSOR 3
P2275 - O2 SENSOR SIGNAL STUCK RICH - BANK 1, SENSOR 3
DTC P2448: SECONDARY AIR INJECTION SYSTEM HIGH AIRFLOW (BANK 1)
| Description | The AIR system detects excessive mass air flow change with the pump ON and a rich exhaust system air fuel ratio. | ||
|---|---|---|---|
| Possible Causes | AIR outlet hose leak. AIR outlet hose is disconnected. | ||
| Diagnostic Aids | Measured air flow is less than expected. Visually inspect the secondary AIR inlet hose. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HM . | ||
P2448 - SECONDARY AIR INJECTION SYSTEM HIGH AIRFLOW (BANK 1)
DTC P260F: EVAPORATIVE SYSTEM MONITORING PROCESSOR PERFORMANCE
| Description | This DTC is set when a concern is detected internal to the powertrain control module (PCM). The microprocessor that controls the engine off natural vacuum (EONV) leak check monitor is separate from the main processor within the PCM. | ||
|---|---|---|---|
| Possible Causes | Module communications network concerns PCM calibration level Damaged PCM | ||
| Diagnostic Aids | Verify the PCM is at the latest calibration level. Reprogram if necessary. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test HX . | ||
P260F - EVAPORATIVE SYSTEM MONITORING PROCESSOR PERFORMANCE
DTC Pxxxx
Note. 'x' equals any number 0 through 9 or letter A through F.
| Description | |||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | For Pxxxx DTCs not listed in this chart, refer to the customer's symptom to determine the applicable service repair information for diagnosis. | ||
Pxxxx
DTC U0101: LOST COMMUNICATION WITH TRANSAXLE CONTROL MODULE (TCM)
| Description | The powertrain control module (PCM) continuously monitors the controller area network (CAN) for messages from the TCM. This DTC sets when the PCM fails to receive the TCM message within the defined amount of time. | ||
|---|---|---|---|
| Possible Causes | Damaged CAN communication bus circuit | ||
| Diagnostic Aids | Network DTC concerns occur during module-to-module communication. For additional description and operation of the vehicle communication network, refer to the appropriate MODULE COMMUNICATIONS NETWORK article . | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | |||
U0101 - LOST COMMUNICATION WITH TRANSAXLE CONTROL MODULE (TCM)
DTC U0121: LOST COMMUNICATION WITH THE ANTI-LOCK BRAKE SYSTEM (ABS) CONTROL MODULE
| Description | The powertrain control module (PCM) continuously monitors the controller area network (CAN) for messages from the ABS. This DTC sets when the PCM fails to receive the ABS message within the defined amount of time. | ||
|---|---|---|---|
| Possible Causes | Damaged CAN communication bus circuit | ||
| Diagnostic Aids | Network DTC concerns occur during module-to-module communication. For additional description and operation of the vehicle communication network, refer to the appropriate MODULE COMMUNICATIONS NETWORK article . | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | |||
U0121 - LOST COMMUNICATION WITH THE ANTI-LOCK BRAKE SYSTEM (ABS) CONTROL MODULE
DTC U0133: LOST COMMUNICATION WITH ACTIVE ROLL CONTROL MODULE
| Description | Missing message concerns are logged by a module upon failure to receive a message from another module within a defined retry period. | ||
|---|---|---|---|
| Possible Causes | Open VPWR circuit to the sending module Open GND circuit to the sending module Open network circuits to the sending module | ||
| Diagnostic Aids | Carry out the diagnostics for the associated network module. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate VEHICLE DYNAMIC SYSTEMS article . | ||
U0133 - LOST COMMUNICATION WITH ACTIVE ROLL CONTROL MODULE
DTC U0155: LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER CONTROL MODULE
| Description | Missing message concerns are logged by a module upon failure to receive a message from another module within a defined retry period. | ||
|---|---|---|---|
| Possible Causes | Open VPWR circuit to the sending module Open GND circuit to the sending module Open network circuits to the sending module | ||
| Diagnostic Aids | Carry out the diagnostics for the associated network module. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate INSTRUMENT CLUSTER article . | ||
U0155 - LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER CONTROL MODULE
DTC U0300: INTERNAL CONTROL MODULE SOFTWARE INCOMPATIBILITY
| Description | This DTC indicates that there are incompatible software levels within the powertrain control module (PCM) that control the electronic throttle control (ETC) system. The ETC system utilizes 3 different microprocessors within the PCM, each having its own software level and function. The 3 microprocessors must have the proper level of software in order to communicate and function together. | ||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | Verify the PCM is at the latest calibration level. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test QE . | ||
U0300 - INTERNAL CONTROL MODULE SOFTWARE INCOMPATIBILITY
DTC U0434: INVALID DATA RECEIVED FROM ACTIVE ROLL CONTROL MODULE
| Description | Data is transferred within the normal inter-module message, but contains known invalid data. The receiving module logs a DTC related to the invalid data concern. | ||
|---|---|---|---|
| Possible Causes | Radio frequency interference/electromagnetic interference (RFI/EMI) Corrosion or incorrect harness connections | ||
| Diagnostic Aids | Carry out the diagnostics for the associated network module. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate VEHICLE DYNAMIC SYSTEMS article . | ||
U0434 - INVALID DATA RECEIVED FROM ACTIVE ROLL CONTROL MODULE
DTC U1021: SCP INVALID OR MISSING DATA FOR AIR CONDITIONING CLUTCH
| Description | |||
|---|---|---|---|
| Possible Causes | Network DTC(s) occur during module-to-module communication concerns. Two types of network concerns can be categorized: Invalid data network concerns - data is transferred within the normal inter-module message, but contains known invalid data. The transmitting module logs a DTC related to the invalid data concern. Missing message network concerns - missing message concerns are logged by the module upon failure to receive a message from another module within a defined retry period. | ||
| Diagnostic Aids | Carry out the on-board diagnostics for the associated network module. For additional information concerning the description and operation of the vehicle communication network, refer to the appropriate MODULE COMMUNICATIONS NETWORK article . | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate CLIMATE CONTROL SYSTEM - GENERAL INFORMATION & DIAGNOSTICS article . | ||
U1021 - SCP INVALID OR MISSING DATA FOR AIR CONDITIONING CLUTCH
DTC U1039: SCP INVALID OR MISSING DATA FOR VEHICLE SPEED
| Description | |||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC U1021. | ||
| Diagnostic Aids | See the diagnostic aids for DTC U1021. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate VEHICLE DYNAMIC SYSTEMS article . | ||
U1039 - SCP INVALID OR MISSING DATA FOR VEHICLE SPEED
DTC U1051: SCP INVALID OR MISSING DATA FOR BRAKES
| Description | |||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC U1021. | ||
| Diagnostic Aids | See the diagnostic aids for DTC U1021. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate EXTERIOR LIGHTING article . | ||
U1051 - SCP INVALID OR MISSING DATA FOR BRAKES
DTC U1131: SCP INVALID OR MISSING DATA FOR FUEL SYSTEM
| Description | |||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC U1021. | ||
| Diagnostic Aids | See the diagnostic aids for DTC U1021. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate INSTRUMENT CLUSTER article . | ||
U1131 - SCP INVALID OR MISSING DATA FOR FUEL SYSTEM
DTC U1147: SCP INVALID OR MISSING DATA FOR VEHICLE SECURITY
| Description | |||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC U1021. | ||
| Diagnostic Aids | See the diagnostic aids for DTC U1021. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate ANTI-THEFT article . | ||
U1147 - SCP INVALID OR MISSING DATA FOR VEHICLE SECURITY
DTC U1262: SCP COMMUNICATION BUS FAULT - PERFORM NETWORK COMMUNICATION TEST
| Description | |||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC U1021. | ||
| Diagnostic Aids | Refer to the appropriate MODULE COMMUNICATIONS NETWORK article for further diagnosis. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate MODULE COMMUNICATIONS NETWORK article . | ||
U1262 - STANDARD CORPORATE PROTOCOL (SCP) COMMUNICATION BUS FAULT
DTC U1451: SCP INVALID OR MISSING DATA FOR ANTI-THEFT MODULE
| Description | |||
|---|---|---|---|
| Possible Causes | See the possible causes for DTC U1021. | ||
| Diagnostic Aids | See the diagnostic aids for DTC U1021. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the appropriate ANTI-THEFT article . | ||
U1451 - SCP INVALID OR MISSING DATA FOR ANTI-THEFT MODULE
DTC UXXXX
Note. 'x' equals any number 0 through 9 or letter A through F.
| Description | Powertrain related DTC from another module. | ||
|---|---|---|---|
| Possible Causes | |||
| Diagnostic Aids | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | For U DTC(s) received during self-test of a module other than the powertrain control module (PCM), refer to QT STEP 1: POWERTRAIN CONTROL MODULE QT (PCM) QUICK TEST . | ||
UXXXX - NETWORK COMMUNICATION DIAGNOSTIC TROUBLE CODE (DTC)
Note. DTC P1000 is ignored in the key on engine off (KOEO) and key on engine running (KOER) self-tests. Disregard DTC P1000 and continue as directed.
See also:
• HK
• REFERENCE VALUES
• THERMOSTAT MONITOR
• FUEL TRIM
• ADAPTIVE FUEL DTC DIAGNOSTIC TECHNIQUES
• OUTPUT TEST MODE (OTM)
• STEP 1: POWERTRAIN CONTROL MODULE (PCM) QUICK TEST
• DTC P0010
• DTC P0011
• DTC P0012
• DTC P0016
• DTC P0018
• DTC P0020
• DTC P0021
• DTC P0022
• DTC P0040
• DTC P0041
• DTC P0053
• DTC P0054
• DTC P0055
• DTC P0059
• DTC P0060
• DTC P0068
• DTC P0102
• DTC P0103
• DTC P0104
• DTC P0106
• DTC P0107
• DTC P0108
• DTC P0109
• DTC P0112
• DTC P0113
• DTC P0114
• DTC P0116
• DTC P0117
• DTC P0118
• DTC P0119
• DTC P0121
• DTC P0122
• DTC P0123
• DTC P0125
• DTC P0127
• DTC P0128
• DTC P0132
• DTC P0133
• DTC P0135
• DTC P0138
• DTC P0141
• DTC P0144
• DTC P0147
• DTC P0148
• DTC P0152
• DTC P0153
• DTC P0155
• DTC P0158
• DTC P0161
• DTC P0171
• DTC P0172
• DTC P0174
• DTC P0175
• DTC P0180
• DTC P0181
• DTC P0182
• DTC P0183
• DTC P0190
• DTC P0191
• DTC P0192
• DTC P0193
• DTC P0196
• DTC P0197
• DTC P0198
• DTC P020X
• DTC P0210
• DTC P0217
• DTC P0218
• DTC P0219
• DTC P0221
• DTC P0222
• DTC P0223
• DTC P0230
• DTC P0231
• DTC P0232
• DTC P0234
• DTC P0243
• DTC P0261
• DTC P0262
• DTC P0264
• DTC P0265
• DTC P0267
• DTC P0268
• DTC P0270
• DTC P0271
• DTC P0273
• DTC P0274
• DTC P0276
• DTC P0277
• DTC P0279
• DTC P0280
• DTC P0282
• DTC P0283
• DTC P0297
• DTC P0298
• DTC P0300
• DTC P0301 - P0309
• DTC P0310
• DTC P0315
• DTC P0316
• DTC P0320
• DTC P0325
• DTC P0326
• DTC P0330
• DTC P0331
• DTC P0340
• DTC P0344
• DTC P0345
• DTC P0349
• DTC P0350
• DTC P0351
• DTC P0352
• DTC P0353
• DTC P0354
• DTC P0355
• DTC P0356
• DTC P0357
• DTC P0358
• DTC P0359
• DTC P0360
• DTC P0400
• DTC P0401
• DTC P0402
• DTC P0403
• DTC P0405
• DTC P0406
• DTC P0410
• DTC P0412
• DTC P0420
• DTC P0430
• DTC P0442
• DTC P0443
• DTC P0446
• DTC P0451
• DTC P0452
• DTC P0453
• DTC P0454
• DTC P0455
• DTC P0456
• DTC P0457
• DTC P0460
• DTC P0461
• DTC P0462
• DTC P0463
• DTC P0480
• DTC P0481
• DTC P0482
• DTC P0483
• DTC P0491
• DTC P0500
• DTC P0503
• DTC P0505
• DTC P0506
• DTC P0507
• DTC P050A
• DTC P050B
• DTC P0511
• DTC P0528
• DTC P0532
• DTC P0533
• DTC P0534
• DTC P0537
• DTC P0538
• DTC P0552
• DTC P0553
• DTC P0579
• DTC P0581
• DTC P0600
• DTC P0602
• DTC P0603
• DTC P0604
• DTC P0605
• DTC P0606
• DTC P0607
• DTC P060A
• DTC P060B
• DTC P060C
• DTC P0611
• DTC P061B
• DTC P061C
• DTC P061D
• DTC P061F
• DTC P0620
• DTC P0622
• DTC P0625
• DTC P0626
• DTC P062C
• DTC P0645
• DTC P0657
• DTC P0660
• DTC P0685
• DTC P0689
• DTC P0690
• DTC P0703
• DTC P0704
• DTC P0705
• DTC P0707
• DTC P0708
• DTC P071X
• DTC P0720
• DTC P0721
• DTC P0722
• DTC P0723
• DTC P073X
• DTC P074X
• DTC P075X
• DTC P076X
• DTC P077X
• DTC P078X
• DTC P079X
• DTC P0815
• DTC P0830
• DTC P0833
• DTC P0840
• DTC P09XX
• DTC P1000
• DTC P1001
• DTC P1100
• DTC P1101
• DTC P1112
• DTC P1114
• DTC P1115
• DTC P1116
• DTC P1117
• DTC P1120
• DTC P1124
• DTC P1125
• DTC P1127
• DTC P1156
• DTC P115E
• DTC P117A
• DTC P1184
• DTC P1229
• DTC P1233
• DTC P1234
• DTC P1235
• DTC P1236
• DTC P1237
• DTC P1238
• DTC P1244
• DTC P1245
• DTC P1246
• DTC P1260
• DTC P1261
• DTC P1262
• DTC P1263
• DTC P1264
• DTC P1265
• DTC P1266
• DTC P1267
• DTC P1268
• DTC P1270
• DTC P1271
• DTC P1272
• DTC P1273
• DTC P1274
• DTC P1275
• DTC P1276
• DTC P1277
• DTC P1278
• DTC P1285
• DTC P1288
• DTC P1289
• DTC P128A
• DTC P1290
• DTC P1299
• DTC P1309
• DTC P1336
• DTC P1397
• DTC P1405
• DTC P1406
• DTC P1408
• DTC P1409
• DTC P1436
• DTC P1437
• DTC P1443
• DTC P1450
• DTC P1451
• DTC P1460
• DTC P1461
• DTC P1462
• DTC P1463
• DTC P1464
• DTC P1469
• DTC P1474
• DTC P1477
• DTC P1479
• DTC P1489
• DTC P1500
• DTC P1501
• DTC P1502
• DTC P1504
• DTC P1506
• DTC P1507
• DTC P1512
• DTC P1513
• DTC P1516
• DTC P1517
• DTC P1518
• DTC P1519
• DTC P151A
• DTC P1520
• DTC P1537
• DTC P1538
• DTC P1549
• DTC P1550
• DTC P1565
• DTC P1566
• DTC P1567
• DTC P1568
• DTC P1572
• DTC P1582
• DTC P1633
• DTC P1635
• DTC P1636
• DTC P1639
• DTC P1640
• DTC P1641
• DTC P1650
• DTC P1651
• DTC P1674
• DTC P1703
• DTC P1705
• DTC P1709
• DTC P1729
• DTC P1780
• DTC P1781
• DTC P17XX
• DTC P18xx
• DTC P1900
• DTC P1901
• DTC P1910
• DTC P2004
• DTC P2005
• DTC P2006
• DTC P2007
• DTC P2008
• DTC P2014
• DTC P2015
• DTC P2019
• DTC P2020
• DTC P2065
• DTC P2066
• DTC P2067
• DTC P2068
• DTC P2070
• DTC P2071
• DTC P2072
• DTC P2100
• DTC P2101
• DTC P2104
• DTC P2105
• DTC P2106
• DTC P2107
• DTC P2110
• DTC P2111
• DTC P2112
• DTC P2121
• DTC P2122
• DTC P2123
• DTC P2126
• DTC P2127
• DTC P2128
• DTC P2131
• DTC P2132
• DTC P2133
• DTC P2135
• DTC P2195
• DTC P2196
• DTC P2197
• DTC P2198
• DTC P2257
• DTC P2258
• DTC P2270
• DTC P2271
• DTC P2272
• DTC P2273
• DTC P2274
• DTC P2275
• DTC P2448
• DTC P260F
• DTC U0101
• DTC U0121
• DTC U0133
• DTC U0155
• DTC U0300
• DTC U0434
• DTC U1021
• DTC U1039
• DTC U1051
• DTC U1131
• DTC U1147
• DTC U1262
• DTC U1451