Section 448 (Engine Controls - Self-Diagnostics - 6.0L Bi-Fuel & CNG)
WARNING: This page is about a different car, the 2003 GMC Sierra and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Introduction
- Self-Diagnostic System
- Programming
- Drive Cycles
- Summary
- Diagnostic Trouble Code Definitions
- Component Locations
- Connector Identification
- System Tests
- Diagnostic Tests
- Notes
- DTC P0005: Fuel Shutoff Valve "A" Control Circuit/Open
- DTC P0148: Fuel Delivery Error
- DTC P0171: Fuel Trim System Lean - Bank 1 & DTC P0174: Fuel Trim System Lean - Bank 2
- DTC P0172: Fuel Trim System Rich - Bank 1 & DTC P0175: Fuel Trim System Rich - Bank 2
- DTC P0182: Fuel Tank Temperature Sensor Circuit - Low Voltage
- DTC P0183: Fuel Tank Temperature Sensor Circuit - High Voltage
- DTC P0187: Fuel Rail Temperature Sensor Circuit - Low Voltage
- DTC P0188: Fuel Rail Temperature Sensor Circuit - High Voltage
- DTC P0191: Fuel Rail Pressure Sensor Circuit Performance
- DTC P0192: Fuel Rail Pressure Sensor Circuit - Low Voltage
- DTC P0193: Fuel Rail Pressure Sensor Circuit - High Voltage
- DTC P0200: Injector Control Circuit Voltage
- DTC P0300-P0308: Engine Misfire Detected
- DTC P0611: Fuel Injector Control Module Performance
- DTC P1020: Incorrect Voltage On A CNG Fuel Injector Control Circuit
- DTC P1021-P1028: Incorrect Voltage On A CNG Fuel Injector Control Circuit
- DTC P1204: Vehicle Does Not Start On CNG
- DTC P1207: Fuel Rail Pressure Output PWM Signal Not Received By Pcm
- DTC P1209: FICM Diagnostic Output PWM Signal Not Received By Pcm
- DTC P1432: Fuel Tank Pressure Sensor Signal Low
- DTC P1433: Fuel Pressure Sensor Signal High
- DTC P2146: Incorrect Voltage Detected - Command State Of AFO Enable Circuit
- DTC P2665: Incorrect Voltage Detected - Low Pressure Lock-Off Solenoid
- Wiring Diagrams