Diagnostic Trouble Code (DTC) Descriptions
| Fault Code | Circuit Index | DTC Description | Probable Causes |
|---|---|---|---|
| P0046 | VGT Solenoid | Turbo/Super Charger Boost Control Solenoid Circuit Range/Performance | Open circuit, control circuit short to voltage, control circuit short to ground, solenoid |
| P0069 | BARO | MAP/BARO Correlation | Biased MAP or BARO sensor, circuitry |
| P0096 | IAT2 | Intake Air Temperature Sensor 2 Circuit Range/Performance | IAT2 sensor biased, circuitry |
| P0097 | IAT2 | Intake Air Temperature Sensor 2 Circuit Low Input | Short to ground, IAT2 sensor |
| P0098 | IAT2 | Intake Air Temperature Sensor 2 Circuit High Input | Short to voltage, signal circuit open, IAT2 sensor |
| P0101 | MAF | Mass or Volume Air Flow Circuit Range/Performance | Restricted air flow, MAF sensor, contamination, intake air leak |
| P0103 | MAF | Mass or Volume Air Flow Circuit High Input | Restriction, water intrusion, signal short to voltage, return circuit open, MAF sensor |
| P0107 | BARO | Manifold Absolute Pressure/BARO Sensor Low Input | Open VREF, signal circuit short to ground, BARO sensor |
| P0108 | BARO | Manifold Absolute Pressure/BARO Sensor High Input | Short to voltage, signal return circuit open, BARO sensor |
| P0112 | IAT | Intake Air Temperature Circuit Low Input | Short to ground, IAT sensor |
| P0113 | IAT | Intake Air Temperature Circuit High Input | Short to voltage, signal circuit open, IAT sensor |
| P0117 | ECT | Engine Coolant Temperature Circuit Low Input | Short to ground, ECT sensor |
| P0118 | ECT | Engine Coolant Temperature High Input | Short to voltage, signal circuit open, ECT sensor |
| P0196 | EOT | Engine Oil Temperature Sensor Circuit Range/Performance | Circuitry, biased sensor, thermostat |
| P0197 | EOT | Engine Oil Temperature Sensor Circuit Low Input | Short to ground, EOT sensor |
| P0198 | EOT | Engine Oil Temperature Sensor Circuit High Input | Short to voltage, signal circuit open, EOT sensor |
| P0219 | Engine Overspeed Condition | Incorrect downshift, CKP and CMP interference, excessive engine speed | |
| P0230 | Fuel Pump | Fuel Pump Primary Circuit | Control circuit open, fuel pump relay |
| P0231 | Fuel Pump | Fuel Pump Secondary Circuit Low | Inertia switch, fuel pump relay, open or short circuit |
| P0232 | Fuel Pump | Fuel Pump Secondary Circuit High | Fuel pump relay, short circuit, fuel pump |
| P0236 | MAP | Turbo/Super Charger Boost Sensor A Circuit Range/Performance | Restricted exhaust, MAP hose, MAP sensor |
| P0237 | MAP | Turbo/Super Charger Boost Sensor A Circuit Low | Open circuit, short to ground, MAP sensor |
| P0238 | MAP | Turbo/Super Charger Boost Sensor A Circuit High | Circuit short to voltage, MAP sensor |
| P0261 | INJ | Cylinder Number 1 Injector Circuit Low | Open circuit, fuel injector, FICM connector loose |
| P0262 | INJ | Cylinder Number 1 Injector Circuit High | Circuit short to ground or voltage, fuel injector |
| P0263 | INJ | Cylinder Number 1 Contribution/Balance | Power cylinder, valve train or injector |
| P0264 | INJ | Cylinder Number 2 Injector Circuit Low | Open circuit, fuel injector, FICM connector loose |
| P0265 | INJ | Cylinder Number 2 Injector Circuit High | Circuit short to ground or voltage, fuel injector |
| P0266 | INJ | Cylinder Number 2 Contribution/Balance | Power cylinder, valve train or injector |
| P0267 | INJ | Cylinder Number 3 Injector Circuit Low | Open circuit, fuel injector, FICM connector loose |
| P0268 | INJ | Cylinder Number 3 Injector Circuit High | Circuit short to ground or voltage, fuel injector |
| P0269 | INJ | Cylinder Number 3 Contribution/Balance | Power cylinder, valve train or injector |
| P0270 | INJ | Cylinder Number 4 Injector Circuit Low | Open circuit, fuel injector, FICM connector loose |
| P0271 | INJ | Cylinder Number 4 Injector Circuit High | Circuit short to ground or voltage, fuel injector |
| P0272 | INJ | Cylinder Number 4 Contribution/Balance | Power cylinder, valve train or injector |
| P0273 | INJ | Cylinder Number 5 Injector Circuit Low | Open circuit, fuel injector, FICM connector loose |
| P0274 | INJ | Cylinder Number 5 Injector Circuit High | Circuit short to ground or voltage, fuel injector |
| P0275 | INJ | Cylinder Number 5 Contribution/Balance | Power cylinder, valve train or injector |
| P0276 | INJ | Cylinder Number 6 Injector Circuit Low | Open circuit, fuel injector, FICM connector loose |
| P0277 | INJ | Cylinder Number 6 Injector Circuit High | Circuit short to ground or voltage, fuel injector |
| P0278 | INJ | Cylinder Number 6 Contribution/Balance | Power cylinder, valve train or injector |
| P0279 | INJ | Cylinder Number 7 Injector Circuit Low | Open circuit, fuel injector, FICM connector loose |
| P0280 | INJ | Cylinder Number 7 Injector Circuit High | Circuit short to ground or voltage, fuel injector |
| P0281 | INJ | Cylinder Number 7 Contribution/Balance | Power cylinder, valve train or injector |
| P0282 | INJ | Cylinder Number 8 Injector Circuit Low | Open circuit, fuel injector, FICM connector loose |
| P0283 | INJ | Cylinder Number 8 Injector Circuit High | Circuit short to ground or voltage, fuel injector |
| P0284 | INJ | Cylinder Number 8 Contribution/Balance | Power cylinder, valve train or injector |
| P0297 | INJ | Vehicle Overspeed Condition | Excessive engine speed, VSS interference |
| P0298 | EOT | Engine Oil Overtemperature Condition | EOT sensor, circuitry, cooling system, thermostat |
| P0299 | EP | Turbo/Super Charger Underboost | EP sensor, VGT control valve slow/lack of response |
| P0300 | INJ | Random Misfire Detected | Oil/fuel aeration, base engine |
| P0301 | INJ | Cylinder Number 1 Misfire Detected | Base engine, injector |
| P0302 | INJ | Cylinder Number 2 Misfire Detected | Base engine, injector |
| P0303 | INJ | Cylinder Number 3 Misfire Detected | Base engine, injector |
| P0304 | INJ | Cylinder Number 4 Misfire Detected | Base engine, injector |
| P0305 | INJ | Cylinder Number 5 Misfire Detected | Base engine, injector |
| P0306 | INJ | Cylinder Number 6 Misfire Detected | Base engine, injector |
| P0307 | INJ | Cylinder Number 7 Misfire Detected | Base engine, injector |
| P0308 | INJ | Cylinder Number 8 Misfire Detected | Base engine, injector |
| P0335 | CKP | Crankshaft Position Sensor A Circuit | Circuitry, CKP sensor, electrical noise |
| P0336 | CKP | Crankshaft Position Sensor A Circuit Range/Performance | Circuitry, CKP sensor, electrical noise |
| P0340 | CMP | Camshaft Position Sensor A Circuit (Bank 1 or Single Sensor) | Circuitry, CMP sensor, electrical noise |
| P0341 | CMP | Camshaft Position Sensor A Circuit Range/Performance (Bank 1 or Single Sensor) | Circuitry, CMP sensor, electrical noise |
| P0381 | GPL | Glow Plug/Heater Indicator Circuit | Open circuit, short to ground, indicator |
| P0401 | EGR | Exhaust Gas Recirculation Flow Insufficient Detected | EGR valve, EGR position sensor bias, EP sensor bias |
| P0402 | EGR | Exhaust Gas Recirculation Flow Excessive Detected | EGR valve, EGR position sensor bias, EP sensor bias |
| P0403 | EGR | Exhaust Gas Recirculation Control Circuit | Open circuit, short to ground or voltage, EGR valve |
| P0404 | EGR | Exhaust Gas Recirculation Control Circuit Range/Performance | EGR sensor or valve, EGR position circuit |
| P0405 | EGR | Exhaust Gas Recirculation Sensor A Circuit Low | Open circuit, short to ground, EGR position sensor |
| P0406 | EGR | Exhaust Gas Recirculation Sensor A Circuit High | Short to voltage, EGR position sensor |
| P0460 | FLI | Fuel Level Sensor A Circuit | Open Circuit, short circuit, fuel sending unit, instrument cluster |
| P0462 | FLI | Fuel Level Sensor A Circuit Low Input | Open circuit, short circuit, fuel sending unit, instrument cluster |
| P0463 | FLI | Fuel Level Sensor A Circuit High Input | Open circuit, short circuit, fuel sending unit, instrument cluster |
| P0470 | EP | Exhaust Pressure Sensor | EP sensor, open signal return |
| P0471 | EP | Exhaust Pressure Sensor Range/Performance | EP sensor, restricted supply tube |
| P0472 | EP | Exhaust Pressure Sensor Low Input | Open VREF, short circuit, open circuit, EP sensor |
| P0473 | EP | Exhaust Pressure Sensor High Input | Short to voltage, EP sensor |
| P0478 | EP | Exhaust Pressure Control Valve High Input | EP Sensor, VGT control valve slow/lack of response |
| P0480 | VFAN | Fan 1 Control Circuit | Short to voltage, short to ground, open circuit |
| P0500 | VSS | Vehicle Speed Sensor A | VSS sensor, circuitry |
| P0528 | FSS | Fan Speed Sensor Circuit No Signal | Mechanical fault, short to voltage, open circuit, short to ground |
| P0562 | PCED | System Voltage Low | Charging system fault |
| P0563 | PCED | System Voltage High | Charging system fault |
| P0565 | SCCS | Cruise Control ON Signal | Open circuit, short circuit, switch |
| P0566 | SCCS | Cruise Control OFF Signal | Open circuit, short circuit, switch |
| P0567 | SCCS | Cruise Control RESUME Signal | Open circuit, short circuit, switch |
| P0568 | SCCS | Cruise Control SET Signal | Open circuit, short circuit, switch |
| P0569 | SCCS | Cruise Control COAST Signal | Open circuit, short circuit, switch |
| P0605 | PCED | Powertrain Control Module Read Only Memory (ROM) error | Internal PCM failure |
| P0606 | PCED | ECM/PCM Processor | Internal PCM fault, Engine oil temperature (EOT) sensor connector intermittent connection |
| P0611 | FICM | Fuel Injector Control Module Performance | Internal FICM error |
| P0620 | ALT | Generator 1 Control Circuit | Charging system |
| P0623 | ALT | Generator Lamp Control Circuit | Charging system |
| P0645 | PCED | A/C Clutch Relay Control Circuit | A/C circuitry, A/C relay |
| P0649 | PCED | Cruise Control Lamp Control Circuit | Circuitry, indicator |
| P0670 | GPCM | Glow Plug Module Control Circuit | Short to voltage, short to ground, open circuit |
| P0671 | GPCM | Cylinder 1 Glow Plug Circuit | Open circuit, short to ground, short to voltage, glow plug |
| P0672 | GPCM | Cylinder 2 Glow Plug Circuit | Open circuit, short to ground, short to voltage, glow plug |
| P0673 | GPCM | Cylinder 3 Glow Plug Circuit | Open circuit, short to ground, short to voltage, glow plug |
| P0674 | GPCM | Cylinder 4 Glow Plug Circuit | Open circuit, short to ground, short to voltage, glow plug |
| P0675 | GPCM | Cylinder 5 Glow Plug Circuit | Open circuit, short to ground, short to voltage, glow plug |
| P0676 | GPCM | Cylinder 6 Glow Plug Circuit | Open circuit, short to ground, short to voltage, glow plug |
| P0677 | GPCM | Cylinder 7 Glow Plug Circuit | Open circuit, short to ground, short to voltage, glow plug |
| P0678 | GPCM | Cylinder 8 Glow Plug Circuit | Open circuit, short to ground, short to voltage, glow plug |
| P0683 | GPCM | Glow Plug Control Module to PCM Communication Circuit | Open circuit, short to voltage, short to ground |
| P0700 | TR | Transmission Control System (MIL request) | Internal transmission fault |
| P0703 | BOO | Brake Switch B Input Circuit | Short to ground, open circuit, short to voltage, switch |
| P0830 | CPP | Clutch Pedal Switch A Circuit | Short to ground, open circuit, short to voltage, switch |
| P0833 | CPP | Clutch Pedal Switch B Circuit | Short to ground, open circuit, short to voltage, switch |
| P1000 | PCED | OBD Systems Readiness Test Not Complete | OBD monitors/drive cycle incomplete |
| P1001 | PCED | KOER Not Able To Complete, KOER Aborted | Entry conditions for KOER self-test not met |
| P1102 | MAF | Mass Air Flow Sensor In Range But Lower Than Expected | VPWR circuit open, return circuit open, signal short to ground, sensor |
| P1148 | ALT | Generator 2 Control Circuit | Charging system |
| P1149 | ALT | Generator 2 Control Circuit High | Charging system |
| P115A | FLI | Low Fuel Level - Forced Limited Power | Low fuel level |
| P1184 | EOT | Engine Oil Temperature Sensor Out Of Self-Test Range | Engine too cold/hot, thermostat |
| P1260 | Theft Detected, Vehicle Immobilized | Anti-theft system fault | |
| P1284 | ICP | Aborted KOER - Injector Control Pressure regulator | IPR valve, circuit failure |
| P1335 | EGR | EGR Position Sensor Minimum Stop Performance | EGR valve |
| P1378 | INJ Module | FICM Supply Voltage Circuit Low | FICM connections, relay, short to ground, charging system |
| P1379 | INJ Module | FICM Supply Voltage Circuit High | Charging system |
| P1397 | GPCM | System Voltage Out Of Self-Test Range | Charging system under/overcharge |
| P1408 | EGR | Exhaust Gas Recirculation Flow Out Of Self-Test Range | EGR control circuit open, short to ground or voltage |
| P1464 | ACCS | A/C Demand Out Of Self-Test Range | A/C circuit shorted to voltage, A/C on during self-test |
| P1501 | VSS | Vehicle Speed Sensor Out Of Self-Test Range | VSS sensor, circuitry |
| P1502 | PCED | Invalid Test - Auxiliary Power Control Functioning | Power take-off or auxiliary idle control active during self-test |
| P1531 | PCED | Invalid Test - Accelerator Pedal Movement | Accelerator moved during KOER self-test |
| P1536 | PBA | Parking Brake Switch Circuit | Circuitry, switch |
| P1610 | PCED | Install a New PCM Module | PCM flashing error |
| P1611 | PCED | Diagnose Further | PCM flashing error |
| P1615 | PCED | Flash Erase Error | PCM flashing error |
| P1616 | PCED | Flash Erase Error, Low Voltage | PCM flashing error |
| P1617 | PCED | Block Programming Error | PCM flashing error |
| P1618 | PCED | Block Programming Error, Low Voltage | PCM flashing error |
| P1633 | PCED | Keep Alive Power Voltage Too Low | Open circuit, short to ground |
| P1635 | PCM | Tire/Axle Out Of Acceptable Range | PCM programming |
| P1639 | PCM | Vehicle ID Block Corrupted, Not programmed | PCM programming |
| P1703 | BOO | Brake Switch Out Of Self-Test Range | Switch, circuitry, switch not cycled during self-test |
| P1705 | TR | Transmission Range Circuit Not Indicating Park/Neutral During Self-Test | TR sensor, circuitry |
| P1725 | Insufficient Engine Speed Increase During Self-Test | System voltage out of self-test range. Repeat the self-test. | |
| P1726 | Insufficient Engine Speed Decrease During Self-Test | System voltage out of self-test range. Repeat the self-test. | |
| P2067 | FLI | Fuel Level Sensor A Circuit Low Input | Open circuit, short circuit, fuel sending unit, instrument cluster |
| P2068 | FLI | Fuel Level Sensor A Circuit High Input | Open circuit, short circuit, fuel sending unit, instrument cluster |
| P2104 | APP | Throttle Actuator Control System - Forced Idle | APP sensor, signal circuit shorted |
| P2122 | APP | Throttle/Pedal Position Sensor/Switch D Circuit Low Input | APP sensor, connections, open in signal circuit, signal circuit short to ground |
| P2123 | APP | Throttle/Pedal Position Sensor/Switch D Circuit High Input | Short to voltage, signal return open, APP sensor |
| P2127 | APP | Throttle/Pedal Position Sensor/Switch E Circuit Low Input | APP sensor, connection, open in signal circuit, signal circuit short to ground |
| P2128 | APP | Throttle/Pedal Position Sensor/Switch E Circuit High Input | Short to voltage, signal return open, APP sensor |
| P2132 | APP | Throttle/Pedal Position Sensor/Switch F Circuit Low Input | APP sensor, poor connection, open in signal circuit, signal circuit short to ground |
| P2133 | APP | Throttle/Pedal Position Sensor/Switch F Circuit High Input | Short to voltage, signal return open, APP sensor |
| P2138 | APP | Throttle/Pedal Position Sensor/Switch D/E Voltage Correlation | Difference in sensor readings |
| P2139 | APP | Throttle/Pedal Position Sensor/Switch D/F Voltage Correlation | Difference in sensor readings |
| P2140 | APP | Throttle/Pedal Position Sensor/Switch E/F Voltage Correlation | Difference in sensor readings |
| P2199 | IAT | Intake Air Temperature 1/2 Correlation | Sensor bias, open/shorted circuit |
| P2262 | MAP | Turbo/Super Charger Boost Pressure Not Detected - Mechanical | CAC system leaks, MAP hose disconnected, exhaust system leaks, intake system leaks |
| P2263 | MAP | Turbo/Super Charger System Performance | CAC system leaks, MAP hose disconnected, exhaust system leaks, intake system leaks |
| P2269 | WIF | Water In Fuel Condition | Water in fuel, connections, short circuit, WIF sensor |
| P2284 | ICP | Injector Control Pressure Sensor Circuit Range/Performance | A difference in commanded versus actual injection oil pressure was detected. |
| P2285 | ICP | Injector Control Pressure Sensor Circuit Low | Open circuit, short to ground, ICP sensor |
| P2286 | ICP | Injector Control Pressure Sensor Circuit High | Short to voltage, ICP sensor |
| P2287 | ICP | Injector Control Pressure Sensor Circuit Intermittent | ICP signal is intermittent |
| P2288 | ICP | Injector Control Pressure Too High | ICP pressure is greater than specified value |
| P2289 | ICP | Injector Control Pressure Too High - Engine OFF | Signal ground circuit open, ICP sensor |
| P2290 | ICP | Injector Control Pressure Too Low | Actual pressure is less than commanded for a specified time |
| P2291 | ICP | Injector Control Pressure Too Low - Engine Cranking | ICP cranking pressure too low |
| P2457 | EGR Cooler | EGR Cooler Range/Performance | Engine is overheating, Cooling system has a restriction, Charge air cooler restriction, EGR Cooler restriction |
| P2552 | FICMM | FICMM Circuit - Throttle/Fuel Inhibit Circuit | Open/short circuit |
| P2614 | CMP | Camshaft Position Output Circuit | CMPO circuit noise, connections, circuitry |
| P2617 | CKP | Crankshaft Position Output Circuit | CKPO circuit noise, connections, circuitry |
| P2623 | IPR | Injector Control Pressure Regulator Circuit | Open circuit, short to ground, IPR stuck |
| U0101 | PCED | Lost Communication With ECM/PCM A | Internal communication error |
| U0101 | PCED | Lost Communication With TCM | Internal communication error |
| U0105 | PCED | Lost Communication With FICM | Communication error |
| U0155 | PCED | Lost Communication With Instrument Cluster | Communication error |
| U0306 | PCED | Software Incompatibility With Fuel Injector Control module | Communication error |
DIAGNOSTIC TROUBLE CODE (DTC) DESCRIPTIONS