Engine Controls - Self-Diagnostics - 3.9L & 4.2L
- Introduction
- Self-Diagnostic System
- Summary
- Diagnostic Trouble Code Definitions
- Component Locations
- Connector Identification
- Diagnostic Tests
- Notes
- EFI Warning Light Inoperative
- Engine Control Module Power & Ground Test
- No Diagnostic Trouble Code Test
- Code 02: Reconnected ECM
- Code 12: Mass Airflow Sensor Fault
- Code 14: Coolant Temperature Sensor Fault
- Code 15: Fuel Temperature Sensor Fault
- Code 17: Throttle Position Sensor Fault
- Code 18: Throttle Position Sensor Input High/Mass Airflow Sensor Output Low
- Code 19: Throttle Position Sensor Input Low/Mass Airflow Sensor High Output
- Code 21: Tune Select Resistor Fault
- Code 23: Fuel Supply Fault
- Code 28: Engine Air Leak
- Code 29: ECM Memory Fault
- Code 34: Left Bank Injector Fault (Bank "A")
- Code 36: Right Bank Injector Fault (Bank "B")
- Code 40: Left Bank Misfire (Bank "A")
- Code 44: Left Bank Lambda (Oxygen) Sensor (Bank "A")
- Code 45: Right Bank Lambda (Oxygen) Sensor (Bank "B")
- Code 48: Idle Air Control Valve Fault
- Code 50: Right Bank Misfire (Bank "B") Fault
- Code 59: Group Faults 23/28
- Code 68: Vehicle Speed Sensor Input Fault
- Code 69: Starter Inhibit/Reverse Switch Fault
- Code 88: Canister Purge Valve Leak