Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2000 Chevrolet Pickup C2500, 4D Pickup, 6.5 F, StandardFACTORY OEM SERVICE PROCEDURE
Engine Control System Self-Diagnostics - Diesel
- Model Identification
- Introduction
- Self-Diagnostic System
- Programming
- Summary
- Diagnostic Trouble Code Definitions
- Scan Tool Data
- Circuit Tests
- Diagnostic Tests
- Notes
- DTC P0112: Intake Air Temperature Sensor Circuit Low Voltage
- DTC P0113: Intake Air Temperature Sensor Circuit High Voltage
- DTC P0117: Engine Coolant Temperature Sensor Circuit Low Voltage
- DTC P0118: Engine Coolant Temperature Sensor Circuit High Voltage
- DTC P0121: Accelerator Pedal Position Sensor 1 Circuit Performance
- DTC P0122: Accelerator Pedal Position Sensor 1 Circuit Low Voltage
- DTC P0123: Accelerator Pedal Position Sensor 1 Circuit High Voltage
- DTC P0126: Insufficient ECT For Stable Operation
- DTC P0182: Fuel Temperature Sensor Circuit Low Voltage
- DTC P0183: Fuel Temperature Sensor Circuit High Voltage
- DTC P0215: Engine Shutoff Solenoid Control Circuit
- DTC P0216: Injection Timing Control System
- DTC P0219: Engine OVERSPEED Condition
- DTC P0220: Accelerator Pedal Position Sensor 2 Circuit
- DTC P0221: Accelerator Pedal Position Sensor 2 Circuit Performance
- DTC P0222: Accelerator Pedal Position Sensor 2 Circuit Low Voltage
- DTC P0223: Accelerator Pedal Position Sensor 2 Circuit High Voltage
- DTC P0225: Accelerator Pedal Position Sensor 3 Circuit
- DTC P0226: Accelerator Pedal Position Sensor 3 Circuit Performance
- DTC P0227: Accelerator Pedal Position Sensor 3 Circuit Low Voltage
- DTC P0228: Accelerator Pedal Position Sensor 3 Circuit High Voltage
- DTC P0231: Fuel/Lift Pump Feedback Circuit Low Voltage
- DTC P0236: Turbocharger Boost System
- DTC P0237: Turbocharger Boost Sensor Circuit Low Voltage
- DTC P0238: Turbocharger Boost Sensor Circuit High Voltage
- DTC P0251: Injection Pump Cam System
- DTC P0263: Cylinder No. 1 Balance System
- DTC P0266: Cylinder No. 2 Balance System
- DTC P0269: Cylinder No. 3 Balance System
- DTC P0272: Cylinder No. 4 Balance System
- DTC P0275: Cylinder No. 5 Balance System
- DTC P0278: Cylinder No. 6 Balance System
- DTC P0281: Cylinder No. 7 Balance System
- DTC P0284: Cylinder No. 8 Balance System
- DTC P0300: Engine Misfire Detected
- DTC P0301: Cylinder No. 1 Misfire Detected
- DTC P0302: Cylinder No. 2 Misfire Detected
- DTC P0303: Cylinder No. 3 Misfire Detected
- DTC P0304: Cylinder No. 4 Misfire Detected
- DTC P0305: Cylinder No. 5 Misfire Detected
- DTC P0306: Cylinder No. 6 Misfire Detected
- DTC P0307: Cylinder No. 7 Misfire Detected
- DTC P0308: Cylinder No. 8 Misfire Detected
- DTC P0335: Crankshaft Position Sensor Circuit Performance
- DTC P0370: Timing Reference High Resolution
- DTC P0380: Glow Plug Circuit Performance
- DTC P0501: Vehicle Speed Sensor Circuit
- DTC P0567: Cruise Resume Circuit
- DTC P0568: Cruise Set Circuit
- DTC P0571: Cruise Brake Switch Circuit
- DTC P0601: Pcm Memory
- DTC P0602: Pcm Not Programmed
- DTC P0604: Control Module Random Access Memory
- DTC P0606: Pcm Internal Communication Interrupted
- DTC P1125: Accelerator Pedal Position System
- DTC P1214: Injection Pump Timing Offset Error
- DTC P1216: Fuel Solenoid Response Time Too Short
- DTC P1217: Fuel Solenoid Response Time Too Long
- DTC P1218: Injection Pump Calibration Circuit
- DTC P1621: Pcm Memory Performance/EEPROM Write
- DTC P1626: Vehicle Theft Deterrent Controller Serial Data Circuit
- DTC P1627: A/D Performance
- DTC P1630: Theft Deterrent Pcm In Learn Mode
- DTC P1631: Theft Deterrent Password Incorrect
- DTC P1635: Pcm 5-Volt Reference Low
- DTC P1641: Malfunction Indicator Light Control Circuit
- DTC P1643: Wait To Start Light Control Circuit
- DTC P1654: Service Throttle Soon Light Control Circuit
- DTC P1656: WASTEGATE Solenoid Control Circuit
- Removal & Installation
- Specifications
- Special Tools
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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