Section 106 (Engine Control System Self-Diagnostics - 3.8L)
WARNING: This page is about a different car, the 2002 Pontiac Firebird and 2002 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
- Introduction
- Self-Diagnostic System
- On-Board Diagnostics
- Intermittent Conditions
- Notes
- Preliminary
- Harness or Connector Intermittents
- Electrical Connections or Wiring
- Control Module Power & Grounds, & Component Power & Grounds
- Temperature Sensitivity
- Electromagnetic Interference (EMI) and Electrical Noise
- Incorrect PCM Programming
- Duplicating Failure Conditions
- Scan Tool Snapshot
- Vehicle Data Recorder
- Diagnostic Procedure
- Retrieving Diagnostic Trouble Codes
- Diagnostic System Check - Engine Controls
- Clearing Diagnostic Trouble Codes
- Scan Tool Usage
- Powertrain Control Module Location
- Programming
- Inspection/Maintenance Procedures
- Drive Cycles
- Inspection/Maintenance System Check
- Inspection/Maintenance Complete System Set Procedure
- Inspection/Maintenance Catalyst System Set Procedure
- Inspection/Maintenance Exhaust Gas RECIRCULATION System Set Procedure
- Inspection/Maintenance Evaporative Emission System Set Procedure
- Inspection/Maintenance Heated Oxygen Sensor/Oxygen Sensor System Set Procedure
- Inspection/Maintenance Heated Oxygen Sensor Heater System Set Procedure
- Summary
- Diagnostic Trouble Code Definitions
- Component Locations
- Connector Identification
- System Tests
- 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 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 P0130: Ho2S Circuit Sensor 1
- DTC P0131: Ho2S Circuit - Low Voltage - Bank 1, Sensor 1
- DTC P0132: Ho2S Circuit - High Voltage - Bank 1, Sensor 1
- DTC P0133: Ho2S Circuit - Slow Response - Bank 1, Sensor 1
- DTC P0134: Ho2S Circuit - Insufficient Activity - Bank 1, Sensor 1
- DTC P0135: Ho2S Heater Circuit - Bank 1, Sensor 1
- DTC P0137: Ho2S Circuit - Low Voltage - Bank 1, Sensor 2
- DTC P0138: Ho2S Circuit - High Voltage - Bank 1, Sensor 2
- DTC P0140: Ho2S Circuit - Insufficient Activity - Bank 1, Sensor 2
- DTC P0141: Ho2S Heater Circuit - 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 P0153: Ho2S Circuit - Slow Response - Bank 2, Sensor 1
- DTC P0154: Ho2S Circuit - Insufficient Activity - Bank 2, Sensor 1
- DTC P0155: Ho2S Heater Circuit - Bank 2, Sensor 1
- DTC P0171 & P0174: Fuel Trim System Lean - Bank 1 & 2
- DTC P0172 & P0175: Fuel Trim System Rich - Bank 1 & 2
- DTC P0201-P0206: Fuel Injector Control Circuits
- DTC P0230: Fuel Pump Control Relay Circuit
- DTC P0300-P0306: Engine Misfire Detected
- DTC P0325: Knock Sensor Module Circuit
- DTC P0327 & P0332: Knock Sensor 1 Or 2 - Low Voltage
- DTC P0336: Crankshaft Position Sensor Circuit Performance
- DTC P0341: Camshaft Position Sensor Circuit Performance
- DTC P0401: EGR Insufficient Flow Detected
- DTC P0403: EGR Solenoid Control Circuit
- DTC P0404: EGR System
- DTC P0405: EGR Sensor Circuit Low Voltage
- DTC P0420: TWC System - Low Efficiency
- DTC P0440: EVAP System - Large Leak
- DTC P0442: EVAP System - Small Leak
- DTC P0443: EVAP Purge Valve 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 (M/T)
- DTC P0502: Vehicle Speed Sensor Low Output (A/T)
- DTC P0503: Vehicle Speed Sensor Erratic (A/T)
- DTC P0506: Idle Control System - Low Rpm
- DTC P0507: Idle Control System - High Rpm
- DTC P0601-P0607, P1600, P1621, P1627, P1680, P1681, P1683 & P2610: Pcm Memory
- DTC P0650: Mil Control Circuit
- DTC P0704: Clutch Pedal Switch
- DTC P0719: Brake Switch Circuit - Low Input
- DTC P0724: Brake Switch Circuit - High Input
- DTC P1106: Map Sensor Circuit - Intermittent High Voltage
- DTC P1107: Map Sensor Circuit - Intermittent Low 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 Circuit
- DTC P1125: Accelerator Pedal Position System
- DTC P1133: Ho2S Circuit - Insufficient Switching - Bank 1, Sensor 1
- DTC P1134: Ho2S Transition Time Ratio - Bank 1, Sensor 1
- DTC P1153: Ho2S Circuit - Insufficient Switching - Bank 2, Sensor 1
- DTC P1154: Ho2S Transition Time Ratio - Bank 2, Sensor 1
- DTC P1220: Throttle Position Sensor Out Of Range
- DTC P1221: Throttle Position Sensor 1 & 2 Disagree
- DTC P1258: Engine Metal Over Temperature Protection
- DTC P1271: Accelerator Pedal Position Sensor 1 & 2 Signals Shorted Together
- DTC P1272: Accelerator Pedal Position Sensor 1 & 3 Signals Shorted Together
- DTC P1273: Accelerator Pedal Position Sensor 2 & 3 Signals Shorted Together
- DTC P1275: Accelerator Pedal Position Sensor 1 Signal Out Of Range
- DTC P1276: Accelerator Pedal Position Sensor 1 Disagrees With Sensors 2 & 3
- DTC P1280: Accelerator Pedal Position Sensor 2 Signal Out Of Range
- DTC P1281: Accelerator Pedal Position Sensor 2 Disagrees With Sensors 1 & 3
- DTC P1285: Accelerator Pedal Position Sensor 3 Signal Out Of Range
- DTC P1286: Accelerator Pedal Position Sensor 3 Disagrees With Sensors 1 & 2
- DTC P1336: Crankshaft System Variation Not Learned
- DTC P1351: Pcm Detects Open In Ignition Control Circuit
- DTC P1352: Pcm Detects Open In Ignition Control Circuit
- DTC P1361: Pcm Does Not Monitor Ignition Control Pulses
- DTC P1362: Ignition Control Signal Circuit - Short To Voltage
- DTC P1374: 3X Reference Circuit
- DTC P1380: EBCM DTC Detected Rough Road Data Unstable
- DTC P1381: Misfire Detected - No EBCM/Pcm Serial Data
- DTC P1404: EGR Valve Closed Position Performance
- DTC P1441: EVAP System Flow During Non-Purge
- DTC P1514: Actual MAF & Speed Density Is Greater Than Expected
- DTC P1515: Commanded & Actual Throttle Position Mismatch
- DTC P1516: Commanded & Actual Throttle Position Malfunction
- DTC P1517: Throttle Actuator Control Module Internal Malfunction
- DTC P1518: Loss Of Communication Between Pcm & Throttle Actuator Control Module
- DTC P1519: Throttle Position Sensor 1 Out Of Range
- DTC P1523: Commanded & Actual Throttle Position Mismatch
- DTC P1635: 5-Volt Reference 1 Circuit
- DTC P1639: 5-Volt Reference 2 Circuit