Contents Wiring diagrams Section: Engine Controls - Self Diagnostics - 4.3L: Diagnosis All sections

DIAGNOSTIC TROUBLE CODE DEFINITIONS Chevrolet Silverado 1500 HD

DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC(1) Description(2) Code Type
BXXXX (3)Body Control Systems MalfunctionN/A
CXXXX (3)Chassis Control System MalfunctionN/A
P0016Crankshaft Position-To-Camshaft Position Correlation ErrorB
P0101Mass Air Flow Sensor PerformanceB
P0102Mass Air Flow Sensor Circuit - Low FrequencyB
P0103Mass Air Flow Sensor Circuit - High FrequencyB
P0106MAP System PerformanceB
P0107MAP Sensor Circuit - Low VoltageB
P0108MAP Sensor Circuit - High VoltageB
P0112IAT Sensor Circuit - Low VoltageB
P0113IAT Sensor Circuit - High VoltageB
P0116Engine Coolant Temperature Sensor PerformanceB
P0117Engine Coolant Temperature Sensor Circuit - Low VoltageB
P0118Engine Coolant Temperature Sensor Circuit - High VoltageB
P0121Throttle Position Sensor PerformanceB
P0122Throttle Position Sensor Circuit - Low VoltageB
P0123Throttle Position Sensor Circuit - High VoltageB
P0125Excess Time To Enter Closed Loop Fuel ControlB
P0128Engine Coolant Temperature Less Than Thermostat Regulating TemperatureB
P0131HO2S Circuit - Low Voltage - Bank 1, Sensor 1B
P0132HO2S Circuit - High Voltage - Bank 1, Sensor 1B
P0133HO2S Circuit - Slow Response - Bank 1, Sensor 1B
P0134HO2S Circuit - Insufficient Activity - Bank 1, Sensor 1B
P0135HO2S Heater Circuit - Bank 1, Sensor 1B
P0137HO2S Circuit - Low Voltage - Bank 1, Sensor 2B
P0138HO2S Circuit - High Voltage - Bank 1, Sensor 2B
P0140HO2S Circuit - Insufficient Activity - Bank 1, Sensor 2B
P0141HO2S Heater Circuit - Bank 1, Sensor 2B
P0151HO2S Circuit - Low Voltage - Bank 2, Sensor 1B
P0152HO2S Circuit - High Voltage - Bank 2, Sensor 1B
P0153HO2S Circuit - Slow Response - Bank 2, Sensor 1B
P0154HO2S Circuit - Insufficient Activity - Bank 2, Sensor 1B
P0155HO2S Heater Circuit - Bank 2, Sensor 1B
P0157HO2S Circuit - Low Voltage - Bank 2, Sensor 2B
P0158HO2S Circuit - High Voltage - Bank 2, Sensor 2B
P0160HO2S Circuit - Insufficient Activity - Bank 2, Sensor 2B
P0161HO2S Heater Circuit - Bank 2, Sensor 2B
P0171Fuel Trim System Lean - Bank 1B
P0172Fuel Trim System Rich - Bank 1B
P0174Fuel Trim System Lean - Bank 2B
P0175Fuel Trim System Rich - Bank 2B
P0200Fuel Injector Control CircuitB
P0218 (4)Transmission Fluid OvertemperatureC
P0230Fuel Pump Control Relay CircuitB
P0300Engine Misfire DetectedB
P0315Crankshaft Position Sensor Variation Not LearnedA
P0325Knock Sensor Module CircuitB
P0327Knock Sensor Circuit - Low VoltageB
P0335Crankshaft Position Sensor CircuitB
P0336Crankshaft Position Sensor Circuit PerformanceB
P0341Camshaft Position Sensor Circuit PerformanceB
P0351Ignition Control CircuitB
P0420TWC System - Low Efficiency - Bank 1A
P0430TWC System - Low Efficiency - Bank 2A
P0442EVAP System - Small LeakA
P0443EVAP Purge Solenoid Control CircuitB
P0446EVAP Vent Valve PerformanceA
P0449EVAP Vent Valve PerformanceB
P0452Fuel Tank Pressure Sensor - Low VoltageB
P0453Fuel Tank Pressure Sensor - High VoltageB
P0455EVAP System Leak Detected - Gross Leak/No FlowA
P0461 (5)Fuel Level Sensor Circuit PerformanceC
P0462 (5)Fuel Level Sensor Circuit - Low VoltageC
P0463 (5)Fuel Level Sensor Circuit - High VoltageC
P0496EVAP System High Purge FlowB
P0500 (6)Vehicle Speed SensorB
P0502 (4)Vehicle Speed Sensor Circuit - Low Vehicle Speed DetectedB
P0503 (4)Unrealistic Drop In Vehicle SpeedB
P0506Idle Control System - RPM LowB
P0507Idle Control System - RPM HighB
P0522 (5)Engine Oil Pressure Sensor Circuit - Low VoltageC
P0523 (5)Engine Oil Pressure Sensor Circuit - High VoltageC
P0530 (7)A/C Refrigerant Pressure Sensor CircuitC
P0562 (8)Low System VoltageC
P0563 (8)High System VoltageC
P0601-P0607PCM MemoryA
P0608 (5)Vehicle Speed Circuit FaultC
P0609 (3)Vehicle Speed Signal Circuit - Low VoltageC
P0615 (3)Starter Relay CircuitC
P06415-Volt Reference Circuit Out Of RangeB
P0650Malfunction Indicator Light Control CircuitB
P0651A/C Pressure Sensor/Fuel Tank Pressure Sensor 5-Volt Reference Circuit Out Of RangeB
P0654 (5)Engine Speed Output Circuit Out Of RangeC
P0704 (9)Clutch Pedal Switch Input CircuitB
P0706 (4)Transmission Range SwitchC
P0711 (4)Transmission Fluid Temperature - No Change/Unrealistic ChangeC
P0712 (4)Transmission Fluid Temperature Signal Circuit Short To GroundC
P0713 (4)Transmission Fluid Temperature Signal Circuit Open Or Short To PowerC
P0719 (4)Open Brake Switch CircuitC
P0724 (4)Closed Brake Switch CircuitC
P0741 (4)High TCC Slip Speed Detected With TCC Commanded OnB
P0742 (4)Low TCC Slip Speed Detected With TCC Commanded OffB
P0748 (4)Pressure Control Solenoid Valve Circuit - Continuous Open Or ShortC
P0751 (4)1-2 Shift Solenoid Valve PerformanceB
P0752 (4)1-2 Shift Solenoid Valve PerformanceB
P0753 (4)1-2 Shift Solenoid Circuit - Electrical MalfunctionB
P0756 (4)2-3 Shift Solenoid Valve PerformanceA
P0757 (4)2-3 Shift Solenoid Valve PerformanceA
P0758 (4)2-3 Shift Solenoid Circuit - Electrical MalfunctionA
P0785 (4)3-2 Shift Solenoid Circuit - Electrical MalfunctionB
P0894 (4)Excessive TCC SlipB
P1106MAP Sensor Circuit Intermittent High VoltageC
P1107MAP Sensor Circuit Intermittent Low VoltageC
P1111Intake Air Temperature Sensor Circuit - Intermittent High VoltageC
P1112Intake Air Temperature Sensor Circuit - Intermittent Low VoltageC
P1114Engine Coolant Temperature Sensor Circuit - Intermittent Low VoltageC
P1115Engine Coolant Temperature Sensor Circuit - Intermittent High VoltageC
P1121Throttle Position Sensor Circuit - Intermittent High VoltageC
P1122Throttle Position Sensor Circuit - Intermittent Low VoltageC
P1133HO2S Circuit - Insufficient Switching - Bank 1, Sensor 1B
P1153HO2S Circuit - Insufficient Switching - Bank 2, Sensor 1B
P1258Engine Over-TemperatureA
P1380EBCM DTC Detected - Rough Road Data UnstableC
P1381Misfire Detected - No EBCM/PCM Serial DataC
P1600PCM MemoryA
P0621PCM MemoryA
P1626 (10)Theft Deterrent System Loss Of Serial CommunicationC
P1627PCM MemoryA
P1631 (10)Theft Deterrent System Password IncorrectC
P1637 (8)Generator "L" Terminal Circuit - Improper Voltage LevelC
P1638 (8)Generator Field Duty Cycle Signal Circuit Out Of RangeC
P1680PCM MemoryA
P1681PCM MemoryA
P1683PCM MemoryB
P1810 (4)TFP Manual Valve Position Switch - Circuit MalfunctionB
P1860 (4)TCC PWM Solenoid Circuit - Electrical MalfunctionB
P1875 (4)4WD Low Switch Circuit - Electrical MalfunctionB
P2066 (5)Secondary Fuel Level Sender - Lack Of Signal Variation(11)
P2067 (5)Secondary Fuel Level Sender - Lower Than Normal Signal(11)
P2068 (5)Secondary Fuel Level Sender - Higher Than Normal Signal(11)
P2610PCM MemoryA
UXXXX (3)Network Communication System MalfunctionN/A
(1) DTC definitions may vary depending on vehicle and/or engine configuration. (2) See CODE TYPES under ON-BOARD DIAGNOSTICS. (3) See appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT. (4) See appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS. (5) See appropriate ANALOG INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. (6) On vehicles equipped with A/T, see appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS. On vehicles equipped with M/T, see appropriate DIAGNOSIS article in MANUAL TRANSMISSIONS. (7) See appropriate MANUAL or AUTOMATIC A/C-HEATER SYSTEMS article in AIR CONDITIONING & HEATING. (8) See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS. (9) See appropriate DIAGNOSIS article in MANUAL TRANSMISSIONS. (10) See appropriate ANTI-THEFT SYSTEMS article in ACCESSORIES & EQUIPMENT. (11) Information is not available from manufacturer.
(1)DTC definitions may vary depending on vehicle and/or engine configuration.
(2)See CODE TYPES under ON-BOARD DIAGNOSTICS.
(3)See appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT.
(4)See appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.
(5)See appropriate ANALOG INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT.
(6)On vehicles equipped with A/T, see appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS. On vehicles equipped with M/T, see appropriate DIAGNOSIS article in MANUAL TRANSMISSIONS.
(7)See appropriate MANUAL or AUTOMATIC A/C-HEATER SYSTEMS article in AIR CONDITIONING & HEATING.
(8)See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS.
(9)See appropriate DIAGNOSIS article in MANUAL TRANSMISSIONS.
(10)See appropriate ANTI-THEFT SYSTEMS article in ACCESSORIES & EQUIPMENT.
(11)Information is not available from manufacturer.

DIAGNOSTIC TROUBLE CODE INDEX

Scheme 433

Scheme 433: COMPONENT LOCATIONS

Scheme 434

Scheme 434

Scheme 435

Scheme 435

Scheme 436

Scheme 436

Scheme 437

Scheme 437

Scheme 438

Scheme 438

Scheme 439

Scheme 439

Scheme 440

Scheme 440

Scheme 441

Scheme 441

Scheme 442

Scheme 442: CONNECTOR IDENTIFICATION

Scheme 443

Scheme 443

Scheme 444

Scheme 444

Scheme 445

Scheme 445

Scheme 446

Scheme 446

Scheme 447

Scheme 447

Scheme 448

Scheme 448

Scheme 449

Scheme 449

Scheme 450

Scheme 450

Scheme 451

Scheme 451

Scheme 452

Scheme 452

Scheme 453

Scheme 453

Scheme 454

Scheme 454

Scheme 455

Scheme 455

Scheme 456

Scheme 456

Scheme 457

Scheme 457

Scheme 458

Scheme 458

Scheme 459

Scheme 459

Scheme 460

Scheme 460

Scheme 461

Scheme 461

Scheme 462

Scheme 462

Scheme 463

Scheme 463

Scheme 464

Scheme 464

Scheme 465

Scheme 465
  1. Did you perform the Diagnostic System Check-Engine Controls? If yes, go to next step. If no, see «DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS»(ref-158208-S20709970632003091700000) under SELF-DIAGNOSTIC SYSTEM.
  2. Verify whether the instrument cluster is operational. If the Instrument Panel (IP) is completely inoperative, see appropriate ANALOG INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. Command the MIL ON and OFF with a scan tool. Does the MIL turn ON and OFF when commanded with a scan tool? If yes, problem is intermittent. See «INTERMITTENT CONDITIONS»(ref-158208-S39553683022003091700000) under SELF-DIAGNOSTIC SYSTEM. If no, go to next step.
  3. Inspect the fuse that supplies ignition voltage to the cluster. Is the fuse open? If yes, go to step 11 . If no, go to next step.
  4. Turn OFF the ignition. Remove the fuse that supplies voltage to the cluster. Disconnect the Powertrain Control Module (PCM) harness connectors. See «COMPONENT LOCATIONS»(ref-158208-S14900325472003091700000) . Turn ON the ignition with the engine OFF. Measure the voltage from the MIL control circuit in the PCM harness connector to a good ground. Is the voltage less than .3 volt? If yes, go to next step. If no, go to step 11 .
  5. Turn OFF the ignition. Install the fuse that supplies voltage to the cluster. Turn ON the ignition with the engine OFF. Connect a 3-amp fused jumper wire between the MIL control circuit in the PCM harness connector and a good ground. Is the MIL illuminated? If yes, go to step 9 . If no, go to next step.
  6. Turn OFF the ignition. Remove the Instrument Panel Cluster (IPC). See appropriate ANALOG INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. Turn ON the ignition. Probe the MIL battery positive voltage circuit at the IPC harness connector with a test lamp connected to a good ground. Does the test lamp illuminate? If yes, go to next step. If no, go to step 12 .
  7. Test the MIL control circuit for an open or high resistance between the PCM and the IPC and repair as necessary. Did you find and correct the condition? If yes, go to step 15 . If no, go to next step.
  8. Inspect for poor connections at the harness connector of the IPC and repair as necessary. Did you find and correct the condition? If yes, go to step 15 . If no, go to step 13 .
  9. Inspect for poor connections at the harness connector of the PCM and repair as necessary. Did you find and correct the condition? If yes, go to step 15 . If no, go to step 14 .
  10. Repair the short to ground in the MIL battery positive voltage circuit. Replace the fuse. After repairs, go to step 15 .
  11. Repair the short to voltage in the MIL control circuit. After repairs, go to step 15 .
  12. Repair the open in the ignition voltage circuit. After repairs, go to step 15 .
  13. Repair or replace the IPC. See appropriate ANALOG INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. After repairs, go to step 15 .
  14. Replace the PCM. See appropriate REMOVAL & INSTALLATION article. Reprogram PCM. See «POWERTRAIN CONTROL MODULE»(ref-158208-S25190896492003111900000) under PROGRAMMING. After repairs, go to next step.
  15. Turn OFF the ignition for 30 seconds. Does the vehicle operate correctly, without any MIL illumination and without any stored DTCs? If yes, system is okay. If no, see «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(ref-158208-S06912544392003091700000) .

If the problem is intermittent, see INTERMITTENT CONDITIONS under SELF-DIAGNOSTIC SYSTEM.

  1. Did you perform the Diagnostic System Check-Engine Controls? If yes, go to next step. If no, see «DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS»(ref-158208-S20709970632003091700000) under SELF-DIAGNOSTIC SYSTEM.
  2. Turn OFF the ignition. Disconnect the PCM. See «COMPONENT LOCATIONS»(ref-158208-S14900325472003091700000) . Turn ON the ignition, with the engine OFF. Observe the MIL. Is the MIL illuminated? If yes, go to next step. If no, go to step 5 .
  3. Remove the Instrument Panel Cluster (IPC). See appropriate ANALOG INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. Test the MIL control circuit for a short to ground between the PCM and the IPC. Did you find and correct the condition? If yes, go to step 6 . If no, go to next step.
  4. Repair or replace the IPC. See appropriate ANALOG INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. After repairs, go to step 6 .
  5. Replace the PCM. See appropriate REMOVAL & INSTALLATION article. Reprogram PCM. See «POWERTRAIN CONTROL MODULE»(ref-158208-S25190896492003111900000) under PROGRAMMING. After repairs, go to next step.
  6. Operate the system in order to verify the repair. Did you correct the condition? If yes, system is okay. If no, go to step 2 .

If the problem is intermittent, see INTERMITTENT CONDITIONS under SELF-DIAGNOSTIC SYSTEM.