Section 50 (Engine Control System - Self-Diagnostics - 4.2L)
WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. 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 (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 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 P0013: Camshaft Position Actuator Solenoid Circuit
- DTC P0014: Cam Phaser Performance
- DTC P0105: 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 P0122: TP Sensor Circuit - Low Voltage
- DTC P0123: TP Sensor Circuit - High Voltage
- DTC P0125: Excessive Time To Enter Closed Loop Fuel Control
- DTC P0128: ECT Less Than Thermostat Regulating Temperature
- DTC P0130: Closed Loop Rationality
- DTC P0131: Ho2S Circuit - Low Voltage - Sensor 1
- DTC P0132: Ho2S Circuit - High Voltage - Sensor 1
- DTC P0133: Ho2S Circuit - Slow Response - Sensor 1
- DTC P0134: Ho2S Circuit - Insufficient Activity - Sensor 1
- DTC P0135 & P0141: Ho2S Heater Circuit - Sensors 1 & 2
- 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 P0171: Fuel Trim System Lean
- DTC P0172: Fuel Trim System Rich
- DTC P0201-P0206: Fuel Injector Control Circuit
- DTC P0300: Engine Misfire Detected
- DTC P0301-P0306: Engine Misfire Detected In Cylinder No. 1-6
- DTC P0326: 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 P0340: Camshaft Position Sensor
- DTC P0341: Camshaft Position Sensor Circuit Performance
- DTC P0420: TWC System - Low Efficiency
- DTC P0440: EVAP System - Large Leak
- DTC P0442: EVAP System - Small Leak
- DTC P0446: EVAP Vent Valve Performance
- DTC P0452: Fuel Tank Pressure Sensor - Low Voltage
- DTC P0453: Fuel Tank Pressure Sensor - High Voltage
- DTC P0502: Vehicle Speed Sensor Low Output
- DTC P0503: Vehicle Speed Sensor Erratic
- DTC P0506: Idle Control System - Low Rpm
- DTC P0507: Idle Control System - High Rpm
- DTC P0601-P0607, P1600, P1621, P1627, P1680, P1681 & P1683: Pcm Memory
- DTC P0705: Transmission Range Switch
- DTC P0719: Brake Switch Circuit - Low Input
- DTC P0724: Brake Switch Circuit - High Input
- DTC P1120: TP Sensor Circuit
- DTC P1133: Ho2S Circuit - Insufficient Switching - Sensor 1
- DTC P1137: Ho2S Circuit - Low Voltage - Sensor 2
- DTC P1138: Ho2S Circuit - High Voltage - Sensor 2
- DTC P1171: Lean Exhaust Under Heavy Load
- DTC P1220: Throttle Position Sensor 2 - Low Voltage
- DTC P1221: Excessive Difference Between Throttle Position Sensors
- DTC P1271: Excessive Difference Between Accelerator Pedal Position Sensors
- DTC P1275: Accelerator Pedal Position Circuit - Sensor 1
- DTC P1280: Accelerator Pedal Position Circuit - Sensor 2
- DTC P1336: Crankshaft System Variation Not Learned
- DTC P1345: Crankshaft/Camshaft Position Sensor Correlation
- DTC P1380: EBCM DTC Detected Rough Road Data Unstable
- DTC P1381: Misfire Detected - No EBCM/Pcm Serial Data
- DTC P1441: EVAP System Flow During Non-Purge
- DTC P1512: Command Vs. Actual Throttle Position Correlation Error
- DTC P1514: Airflow Rate Excessive
- DTC P1515: Predicted Vs. Actual Throttle Position Correlation Error
- DTC P1516: Predicted Vs. Actual Throttle Position Correlation Error
- DTC P1523: Throttle Rest Position
- DTC P1633: Ignition 0 Voltage Low
- DTC P1635: 5-Volt Reference A Circuit
- DTC P1639: 5-Volt Reference B Circuit
- DTC P1682: Ignition 1 Voltage Low