Section 182 (Engine Control System Self-Diagnostics - 3.8L)
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 Pontiac Grand Prix, 2003 Pontiac Bonneville, 2003 Chevrolet Monte Carlo, 2003 Chevrolet Impala, and 2003 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
- Model Identification
- 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 & Electrical Noise
- Incorrect PCM Programming
- Duplicating Failure Conditions
- Scan Tool Snapshot
- Vehicle Data Recorder
- Diagnostic Starting Point - Engine Controls
- Diagnostic System Check - Engine Controls
- Retrieving Diagnostic Trouble Codes
- Clearing Diagnostic Trouble Codes
- Scan Tool Usage
- Powertrain Control Module Location
- Programming
- Drive Cycles
- Notes
- 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: MAF System 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 Circuit Performance
- DTC P0117: ECT Sensor Circuit - Low Voltage
- DTC P0118: ECT Sensor Circuit - High Voltage
- DTC P0121: TP Sensor Performance
- DTC P0122: TP Sensor Circuit - Low Voltage
- DTC P0123: TP Sensor Circuit - High Voltage
- DTC P0125: ECT Excessive Time To Enter Closed Loop Fuel Control
- DTC P0128: ECT Less Than Thermostat Regulating Temperature
- DTC P0130: Ho2S Low Activity - Sensor 1
- DTC P0131: Ho2S Circuit Low Voltage - Sensor 1
- DTC P0132: Ho2S Circuit High Voltage - Sensor 1
- DTC P0133: Ho2S Slow Response - Sensor 1
- DTC P0134: Ho2S Circuit Insufficient Activity - Sensor 1
- DTC P0135: Ho2S Heater Performance - Sensor 1
- DTC P0137: Ho2S Circuit Low Voltage - Sensor 2
- DTC P0138: Ho2S Circuit High Voltage - Sensor 2
- DTC P0140: Ho2S Circuit Insufficient Activity - Sensor 2
- DTC P0141: Ho2S 2 Heater Performance - Sensor 2
- DTC P0171: Fuel Trim System Lean
- DTC P0172: Fuel Trim System Rich
- DTC P0201-P0206: Injector Control Circuit
- DTC P0230: Fuel Pump Control Circuit
- DTC P0243: Supercharger Boost Solenoid Control Circuit (VIN 1)
- DTC P0300-P0306: Engine Misfire Detected
- DTC P0325: Knock Sensor Module Circuit
- DTC P0327 & P0332: Knock Sensor Circuit Bank 1 & 2
- DTC P0336: Crankshaft Position Sensor Circuit
- DTC P0341: Camshaft Position Sensor Performance
- DTC P0401: EGR System Insufficient Flow
- DTC P0403: EGR Solenoid Control Circuit
- DTC P0404: EGR Open Position Performance
- DTC P0405: EGR Position Sensor Circuit - Low Voltage
- DTC P0410: Secondary Air Injection System
- DTC P0412: Secondary Air Injection Solenoid Control Circuit
- DTC P0418: Secondary Air Injection Relay Control Circuit
- DTC P0420: Catalyst System Low Efficiency
- DTC P0440: EVAP System
- DTC P0442: EVAP Control System Small Leak Detected
- DTC P0443: EVAP Purge Solenoid Control Circuit
- DTC P0446: EVAP Vent System Performance
- DTC P0449: EVAP Vent Solenoid Valve Control Circuit
- DTC P0452: Fuel Tank Pressure Sensor Circuit - Low Voltage
- DTC P0453: Fuel Tank Pressure Sensor Circuit - High Voltage
- DTC P0502: Vehicle Speed Sensor Circuit - Low Output
- DTC P0503: Vehicle Speed Sensor Circuit - Erratic Output
- DTC P0506: IAC System Rpm Low
- DTC P0507: IAC System Rpm High
- DTC P0560: System Voltage
- DTC P0601-P0607, P1600, P1621, P1627, P1680, P1681, P1683 & P2610: Pcm Internal Microprocessor Integrity
- DTC P0620: Generator Performance
- DTC P0650: Malfunction Indicator Light Control Circuit
- DTC P0719: TCC Brake Switch Circuit - Low Input
- DTC P0724: TCC 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 P1121: TP Sensor Circuit Intermittent - High Voltage
- DTC P1122: TP Sensor Circuit Intermittent - Low Voltage
- DTC P1133: Ho2S Insufficient Switching - Sensor 1
- DTC P1134: Ho2S Transition Time Ratio - Sensor 1
- DTC P1336: CKP System Variation Not Learned
- DTC P1351: Ignition Control Circuit - High Voltage
- DTC P1352: Ignition By-Pass Circuit - High Voltage
- DTC P1361: Ignition Control Circuit - Low Voltage
- DTC P1362: Ignition By-Pass Circuit - Low Voltage
- DTC P1374: Crankshaft Position High-To-Low Resolution Frequency Correlation
- DTC P1380: Misfire Detected - Rough Road Data Not Available
- DTC P1381: Misfire Detected - No Communication With Brake Control Module
- DTC P1404: EGR Closed Position Performance
- DTC P1441: EVAP System Flow During Non-Purge
- DTC P1635: 5-Volt Reference Circuit "A" Or No. 1
- DTC P1639: 5-Volt Reference Circuit "B" Or No. 2
- DTC P1640: Output Driver Module Circuit No. 1
- DTC P1650: Output Driver Module Circuit No. 2
- DTC P1660: Output Driver Module Circuit No. 3
- DTC P1670: Output Driver Module Circuit No. 4
- Wiring Diagrams