Engine Controls - Self-Diagnostics
- Model Identification
- Introduction
- Self-Diagnostic System
- Circuit Tests
- Diagnostic Tests
- Notes
- DTC P0030: Ho2S Heater Circuit - Bank 1, Sensor 1
- DTC P0031: Ho2S Heater Circuit - Low Voltage - Bank 1, Sensor 1
- DTC P0032: Ho2S Heater Circuit - High Voltage - Bank 1, Sensor 1
- DTC P0036: Ho2S Heater Circuit - Bank 1, Sensor 2
- DTC P0037: Ho2S Heater Circuit - Low Voltage - Bank 1, Sensor 2
- DTC P0038: Ho2S Heater Circuit - High Voltage - Bank 1, Sensor 2
- DTC P0050: Ho2S Heater Circuit - Bank 2, Sensor 1
- DTC P0051: Ho2S Heater Circuit - Low Voltage - Bank 2, Sensor 1
- DTC P0052: Ho2S Heater Circuit - High Voltage - Bank 2, Sensor 1
- DTC P0056: Ho2S Heater Circuit - Bank 2, Sensor 2
- DTC P0057: Ho2S Heater Circuit - Low Voltage - Bank 2, Sensor 2
- DTC P0058: Ho2S Heater Circuit - High Voltage - Bank 2, Sensor 2
- DTC P0101: MAF System Performance
- DTC P0102: MAF Sensor Circuit - Low Signal/Frequency
- DTC P0103: MAF Sensor Circuit - High Signal/Frequency
- DTC P0107: Map Sensor Circuit - Low Voltage
- DTC P0108: Map Sensor Circuit - High Voltage
- DTC P0112: IAT Sensor Circuit - Low Voltage/High Temperature
- DTC P0113: IAT Sensor Circuit - High Voltage/Low Temperature
- DTC P0115: ECT Sensor Circuit
- DTC P0116: ECT Sensor Circuit Performance
- DTC P0117: ECT Sensor Circuit - Low Voltage/High Temperature
- DTC P0118: ECT Sensor Circuit - High Voltage/Low Temperature
- DTC P0121: TP Sensor No. 1 Circuit Performance
- DTC P0122: TP Sensor No. 1 Circuit - Low Voltage
- DTC P0123: TP Sensor No. 1 Circuit - High Voltage
- DTC P0130: Ho2S Circuit - Bank 1, Sensor 1
- DTC P0131: Ho2S Circuit - Low Voltage - Bank 1, Sensor 1
- DTC P0132: Ho2S Circuit - High Voltage - Bank 1, Sensor 1
- DTC P0134: Ho2S Circuit - Insufficient Activity - Bank 1, Sensor 1
- DTC P0135: Ho2S Heater Circuit Performance - Bank 1, Sensor 1
- DTC P0136: Ho2S Circuit - Bank 1, Sensor 2
- DTC P0138: Ho2S Circuit - High Voltage - Bank 1, Sensor 2
- DTC P0139: Ho2S Circuit - Slow Response - Bank 1, Sensor 2
- DTC P0140: Ho2S Circuit - Insufficient Activity - Bank 1, Sensor 2
- DTC P0141: Ho2S Heater Circuit Performance - Bank 1, Sensor 2
- DTC P0150: Ho2S Circuit - Bank 2, Sensor 1
- DTC P0151: Ho2S Circuit - Low Voltage - Bank 2, Sensor 1
- DTC P0152: Ho2S Circuit - High Voltage - Bank 2, Sensor 1
- DTC P0154: Ho2S Circuit - Insufficient Activity - Bank 2, Sensor 1
- DTC P0155: Ho2S Heater Circuit Performance - Bank 2, Sensor 1
- DTC P0156: Ho2S Circuit - Bank 2, Sensor 2
- DTC P0158: Ho2S Circuit - High Voltage - Bank 2, Sensor 2
- DTC P0159: Ho2S Circuit - Slow Response - Bank 2, Sensor 2
- DTC P0161: Ho2S Heater Circuit Performance - Bank 2, Sensor 2
- DTC P0171: Fuel Trim System Lean - Bank 1
- DTC P0172: Fuel Trim System Rich - Bank 1
- DTC P0174: Fuel Trim System Lean - Bank 2
- DTC P0175: Fuel Trim System Rich - Bank 2
- DTC P0201: Injector No. 1 Control Circuit
- DTC P0202: Injector No. 2 Control Circuit
- DTC P0203: Injector No. 3 Control Circuit
- DTC P0204: Injector No. 4 Control Circuit
- DTC P0205: Injector No. 5 Control Circuit
- DTC P0206: Injector No. 6 Control Circuit
- DTC P0221: TP Sensor No. 2 Circuit Performance
- DTC P0222: TP Sensor No. 2 Circuit - Low Voltage
- DTC P0223: TP Sensor No. 2 Circuit - High Voltage
- DTC P0230: Fuel Pump Relay Control Circuit
- DTC P0231: Fuel Pump Relay Control Circuit - Low Voltage
- DTC P0232: Fuel Pump Relay Control Circuit - High Voltage
- DTC P0261: Injector No. 1 Control Circuit - Low Voltage
- DTC P0262: Injector No. 1 Control Circuit - High Voltage
- DTC P0264: Injector No. 2 Control Circuit - Low Voltage
- DTC P0265: Injector No. 2 Control Circuit - High Voltage
- DTC P0267: Injector No. 3 Control Circuit - Low Voltage
- DTC P0268: Injector No. 3 Control Circuit - High Voltage
- DTC P0270: Injector No. 4 Control Circuit - Low Voltage
- DTC P0271: Injector No. 4 Control Circuit - High Voltage
- DTC P0273: Injector No. 5 Control Circuit - Low Voltage
- DTC P0274: Injector No. 5 Control Circuit - High Voltage
- DTC P0276: Injector No. 6 Control Circuit - Low Voltage
- DTC P0277: Injector No. 6 Control Circuit - High Voltage
- DTC P0300: Engine Misfire Detected
- DTC P0301-P0306: Specific Cylinder Misfire Detected
- DTC P0313: Misfire Detected With Low Fuel
- DTC P0327: Knock Sensor (KS) No. 1 Circuit - Low Input
- DTC P0328: Knock Sensor (KS) No. 1 Circuit - High Input
- DTC P0332: Knock Sensor (KS) No. 2 Circuit - Low Input
- DTC P0333: Knock Sensor (KS) No. 2 Circuit - High Input
- DTC P0335: Crankshaft Position (CKP) Sensor Circuit
- DTC P0341: Camshaft Position (CMP) Sensor Circuit Performance
- DTC P0342: Camshaft Position (CMP) Sensor Circuit - Low Voltage
- DTC P0343: Camshaft Position (CMP) Sensor Circuit - High Voltage
- DTC P0401: EGR Flow Insufficient
- DTC P0402: EGR Flow Excessive
- DTC P0403: EGR Solenoid Control Circuit
- DTC P0405: EGR Solenoid Circuit Performance - Actual Position Greater Than Commanded
- DTC P0406: EGR Solenoid Circuit Performance - Actual Position Less Than Commanded
- DTC P0422: Warm-Up Catalyst Efficiency Below Threshold - Bank 1
- DTC P0432: Warm-Up Catalyst Efficiency Below Threshold - Bank 2
- DTC P0440: Evaporative Emission (EVAP) System
- DTC P0442: EVAP System - Small Leak Detected
- DTC P0443: EVAP Purge Valve Control Circuit
- DTC P0444: EVAP Purge Valve Control Circuit Open
- DTC P0445: EVAP Purge Valve Control Circuit Shorted
- DTC P0446: EVAP Vent Solenoid Control System
- DTC P0447: EVAP Vent Valve Control Circuit Open
- DTC P0448: EVAP Vent Valve Control Circuit Shorted
- DTC P0451: EVAP Fuel Tank Pressure Sensor Circuit Performance
- DTC P0452: EVAP Fuel Tank Pressure Sensor Circuit - Low Voltage
- DTC P0453: EVAP Fuel Tank Pressure Sensor Circuit - High Voltage
- DTC P0455: EVAP System Gross Leak Detected
- DTC P0461: Fuel Level Sensor Circuit Performance
- DTC P0462: Fuel Level Sensor Circuit - Low Voltage
- DTC P0463: Fuel Level Sensor Circuit - High Voltage
- DTC P0480: Cooling Fan Control Relay No. 1 Circuit
- DTC P0481: Cooling Fan Control Relay No. 2 Circuit
- DTC P0500: VSS Circuit (With Abs)
- DTC P0500: VSS Circuit (Without Abs)
- DTC P0506: Idle Speed Low
- DTC P0507: Idle Speed High
- DTC P0532: A/C Refrigerant Pressure Sensor Circuit - Low Voltage
- DTC P0533: A/C Refrigerant Pressure Sensor Circuit - High Voltage
- DTC P0560: System Voltage
- DTC P0562: System Voltage Low
- DTC P0563: System Voltage High
- DTC P0571: Cruise/Brake Switch Circuit
- DTC P0601: ECM Memory
- DTC P0602: ECM Not Programmed
- DTC P0603: ECM Memory Reset
- DTC P0604: ECM Ram
- DTC P0606: ECM Internal Performance
- DTC P0621: Generator "L" Terminal Circuit
- DTC P0645: A/C Clutch Relay Circuit Open
- DTC P0646: A/C Clutch Relay Circuit - Low Voltage
- DTC P0647: A/C Clutch Relay Circuit - High Voltage
- DTC P1245: Intake Plenum Switchover Valve
- DTC P1271: App Sensors No. 1 & 2 Circuit Performance
- DTC P1277: App Sensor No. 1 Circuit - Low Voltage
- DTC P1278: App Sensor No. 1 Circuit - High Voltage
- DTC P1282: App Sensor No. 2 Circuit - Low Voltage
- DTC P1283: App Sensor No. 2 Circuit - High Voltage
- DTC P1403: EGR Position Circuit - Low Voltage
- DTC P1405: EGR Position Circuit - High Voltage
- DTC P1406: EGR Pintle Position Error
- DTC P1441: EVAP System Flow During Non-Purge
- DTC P1510: Throttle Control System - In Limitation
- DTC P1511: Throttle Control System - Limp Home System Performance
- DTC P1516: Command Vs. Actual Throttle Position Correlation Error
- DTC P1519: Throttle Actuator Control (TAC) Module
- DTC P1523: Throttle Return Performance
- DTC P1526: TP Sensor Learn Not Done After Reprogramming
- DTC P1530: Throttle Control System - Amplifier Adjustment
- DTC P1602: Knock Sensor Control Module Circuit
- DTC P1630: Theft Deterrent System - ECM In Learn Mode
- DTC P1631: Theft Deterrent System - Password Incorrect
- DTC P1632: Theft Deterrent System - Fuel Disabled
- DTC P1637: Generator "L" Terminal Circuit - Low Input
- DTC P1669: Abs Unit Expected
- DTC P1780: Mil External Request By TCM
- DTC P1845: Torque Limit Management