Engine Controls - Self-Diagnostics - 8.1L
- Model Identification
- Introduction
- Self-Diagnostic System
- Programming
- Inspection/Maintenance Procedures
- Summary
- Diagnostic Trouble Code Definitions
- Component Locations
- Connector Identification
- Diagnostic Tests
- Notes
- DTC P0101: Mass Air Flow Sensor Performance
- DTC P0102: MAF Sensor Circuit - Low Frequency
- DTC P0103: MAF Sensor Circuit - High Frequency
- DTC P0106: Map System Performance
- DTC P0107: Map Sensor Circuit - Low Voltage
- DTC P0108: Map Sensor Circuit - High Voltage
- DTC P0112: IAT Sensor Circuit - Low Voltage
- DTC P0113: IAT Sensor Circuit - High Voltage
- DTC P0116: ECT Sensor Performance
- DTC P0117: ECT Sensor Circuit - Low Voltage
- DTC P0118: ECT Sensor Circuit - High Voltage
- DTC P0125: Excessive Time To Enter Closed Loop Fuel Control
- DTC P0128: ECT Less Than Thermostat Regulating Temperature
- DTC P0131 & P0151: Ho2S Circuit - Low Voltage - Bank 1 & 2, Sensor 1
- DTC P0132 & P0152: Ho2S Circuit - High Voltage - Bank 1 & 2, Sensor 1
- DTC P0133 & P0153: Ho2S Circuit - Slow Response - Bank 1 & 2, Sensor 1
- DTC P0134 & P0154: Ho2S Circuit - Insufficient Activity - Bank 1 & 2, Sensor 1
- DTC P0135 & P0155: Ho2S Heater Circuit - Bank 1 & 2, Sensor 1
- DTC P0137 & P0157: Ho2S Circuit - Low Voltage - Bank 1 & 2, Sensor 2
- DTC P0138 & P0158: Ho2S Circuit - High Voltage - Bank 1 & 2, Sensor 2
- DTC P0140 & P0160: Ho2S Circuit - Insufficient Activity - Bank 1 & 2, Sensor 2
- DTC P0141: Ho2S Heater Circuit - Bank 1, Sensor 2
- DTC P0161: Ho2S Heater Circuit - Bank 2, Sensors 2
- DTC P0171 & P0174: Fuel Trim System Lean - Bank 1 & 2
- DTC P0172 & P0175: Fuel Trim System Rich - Bank 1 & 2
- DTC P0200: Fuel Injector Control Circuit
- DTC P0230: Fuel Pump Control Relay Circuit
- DTC P0300-P0308: Engine Misfire Detected
- DTC P0325: Knock Sensor Module Circuit
- DTC P0327 & P0332: Knock Sensor Circuit - Low Voltage
- DTC P0335: Crankshaft Position Sensor Circuit
- DTC P0336: Crankshaft Position Sensor Circuit Performance
- DTC P0341: Camshaft Position Sensor Circuit Performance
- DTC P0342: CMP Signal Low
- DTC P0343: CMP Signal High
- DTC P0351-P0358: Ignition Control Circuit
- DTC P0401: EGR System - Insufficient Flow
- DTC P0404: EGR Valve Open Pintle Position
- DTC P0405: EGR Pintle Position Circuit - Low Voltage
- DTC P0420 & P0430: TWC System - Low Efficiency - Bank 1 & 2
- DTC P0440: EVAP System - Large Leak
- DTC P0442: EVAP System - Small Leak
- DTC P0443: EVAP Purge Solenoid Control Circuit
- DTC P0446: EVAP Vent Valve Performance
- DTC P0449: EVAP Vent Valve Performance
- DTC P0452: Fuel Tank Pressure Sensor - Low Voltage
- DTC P0453: Fuel Tank Pressure Sensor - High Voltage
- DTC P0500: Vehicle Speed Sensor (ALLISON A/T)
- DTC P0500: Vehicle Speed Sensor (M/T)
- DTC P0502: Vehicle Speed Sensor Low Output (4L80-E A/T)
- DTC P0503: Vehicle Speed Sensor Erratic (4L80-E A/T)
- DTC P0506 & P0507: Idle Control System - Low Or High Rpm
- DTC P0601-P0607, P1600, P1621, P1627, P1680, P1681 & P1683: Pcm Memory
- DTC P0650: Mil Control Circuit
- DTC P0700: TCM Mil Request
- DTC P0703: Brake Switch Circuit (ALLISON A/T)
- DTC P0704: Clutch Pedal Switch
- DTC P0706: Transmission Range Switch (4L80-E A/T)
- DTC P0708: Transmission Range Switch (ALLISON A/T)
- DTC P0719: Brake Switch Circuit - Low Input (4L80-E A/T)
- DTC P0724: Brake Switch Circuit - High Input (4L80-E A/T)
- DTC P1111: IAT Sensor Circuit - Intermittent High Voltage
- DTC P1112: IAT Sensor Circuit - Intermittent Low Voltage
- DTC P1114: ECT Sensor Circuit - Intermittent Low Voltage
- DTC P1115: ECT Sensor Circuit - Intermittent High Voltage
- DTC P1120: Throttle Position Sensor 1 Voltage Out Of Range
- DTC P1125: Accelerator Pedal Position Sensors Out Of Range Or Disagree
- DTC P1133 & P1153: Ho2S Circuit - Insufficient Switching - Bank 1 & 2, Sensor 1
- DTC P1134 & P1154: Ho2S Transition Time Ratio - Bank 1 & 2, Sensor 1
- DTC P1172: Fuel Transfer With Secondary Pump
- DTC P1220: Throttle Position Sensor 2 - Voltage Out Of Range
- DTC P1221: Excessive Difference Between Throttle Position Sensors
- DTC P1275: Accelerator Pedal Position Circuit - Sensor 1
- DTC P1276: Accelerator Pedal Position Sensor 1 Correlation
- DTC P1280: Accelerator Pedal Position Circuit - Sensor 2
- DTC P1281: Accelerator Pedal Position Sensor 2 Correlation
- DTC P1285: Accelerator Pedal Position Circuit - Sensor 3
- DTC P1286: Accelerator Pedal Position Sensor 3 Correlation
- DTC P1336: Crankshaft System Variation Not Learned
- DTC P1380: EBCM DTC Detected Rough Road Data Unstable
- DTC P1381: Misfire Detected - No EBCM/Pcm Serial Data
- DTC P1404: EGR Valve Closed Pintle Position
- DTC P1441: EVAP System Flow During Non-Purge
- DTC P1514: Airflow Rate Excessive
- DTC P1515: Predicted Vs Actual Throttle Position Correlation Error
- DTC P1516: Predicted Vs Actual Throttle Position Correlation Error
- DTC P1517: TAC Module Memory Error
- DTC P1518: TAC Module Serial Data Fault
- DTC P1635: 5-Volt Reference 1 Circuit
- DTC P1639: 5-Volt Reference 2 Circuit
- DTC P1781: TCM Mil Request Circuit