Section 1 (Engine Controls Tests W/Codes - Diesel)
WARNING: This page does not describe the selected car, but rather 16 other vehicles, including the 1999 GMC Suburban, 1999 GMC Savana Special, 1999 GMC Savana Camper Special, 1999 GMC Savana, and 1999 GMC Pickup. However, it is still accessible from the selected car via links, so may be relevant.
- Model Identification
- Introduction
- Self-Diagnostic System
- Summary
- Circuit Tests
- Diagnostic Tests
- Notes
- DTC P0101: Mass Airflow System Performance ("C" & "K" Series)
- DTC P0102: MAF Sensor Circuit Low Frequency ("C" & "K" Series)
- DTC P0103: MAF Sensor Circuit High Frequency ("C" & "K" Series)
- DTC P0112: Intake Air Temperature (IAT) Sensor Circuit Low Voltage ("C", "G", "K" & "P" Series)
- DTC P0113: Intake Air Temperature (IAT) Sensor Circuit High Voltage ("C", "G", "K" & "P" Series)
- DTC P0117: Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage ("C", "G", "K" & "P" Series)
- DTC P0118: Engine Coolant Temperature (ECT) Sensor Circuit High Voltage ("C", "G", "K" & "P" Series)
- DTC P0121: Accelerator Pedal Position (App) Sensor 1 Circuit Performance ("C", "G", "K" & "P" Series)
- DTC P0122: Accelerator Pedal Position (App) Sensor 1 Circuit Low Voltage ("C", "G", "K" & "P" Series)
- DTC P0123: Accelerator Pedal Position (App) Sensor 1 Circuit High Voltage ("C", "G", "K" & "P" Series)
- DTC P0126: Insufficient ECT For Stable Operation ("C", "G" & "K" Series)
- DTC P0182: Fuel Temperature Sensor Circuit Low Voltage ("C", "G", "K" & "P" Series)
- DTC P0183: Fuel Temperature Sensor Circuit High Voltage ("C", "G", "K" & "P" Series)
- DTC P0215: Engine Shutoff Solenoid Control Circuit ("C", "G", "K" & "P" Series)
- DTC P0216: Injection Timing Control System ("C", "G", "K" & "P" Series)
- DTC P0219: Engine OVERSPEED Condition ("C", "G", "K" & "P" Series)
- DTC P0220: Accelerator Pedal Position (App) Sensor 2 Circuit ("C", "G", "K" & "P" Series)
- DTC P0221: Accelerator Pedal Position (App) Sensor 2 Circuit Performance ("C", "G", "K" & "P" Series)
- DTC P0222: Accelerator Pedal Position (App) Sensor 2 Circuit Low Voltage ("C", "G", "K" & "P" Series)
- DTC P0223: Accelerator Pedal Position (App) Sensor 2 Circuit High Voltage ("C", "G", "K" & "P" Series)
- DTC P0225: Accelerator Pedal Position (App) Sensor 3 Circuit ("C", "G", "K" & "P" Series)
- DTC P0226: Accelerator Pedal Position (App) Sensor 3 Circuit Performance ("C", "G", "K" & "P" Series)
- DTC P0227: Accelerator Pedal Position (App) Sensor 3 Circuit Low Voltage ("C", "G", "K" & "P" Series)
- DTC P0228: Accelerator Pedal Position (App) Sensor 3 Circuit High Voltage ("C", "G", "K" & "P" Series)
- DTC P0231: Fuel/Lift Pump Feedback Circuit Low Voltage ("C", "G", "K" & "P" Series)
- DTC P0236: Turbocharger Boost System ("C", "G", "K" & "P" Series)
- DTC P0237: Turbocharger Boost Sensor Circuit Low Voltage ("C", "G", "K" & "P" Series)
- DTC P0238: Turbocharger Boost Sensor Circuit High Voltage ("C", "G", "K" & "P" Series)
- DTC P0251: Injection Pump Cam System ("C", "G", "K" & "P" Series)
- DTC P0263: Cylinder No. 1 Balance System ("C", "G", "K" & "P" Series)
- DTC P0266: Cylinder No. 2 Balance System ("C", "G", "K" & "P" Series)
- DTC P0269: Cylinder No. 3 Balance System ("C", "G", "K" & "P" Series)
- DTC P0272: Cylinder No. 4 Balance System ("C", "G", "K" & "P" Series)
- DTC P0275: Cylinder No. 5 Balance System ("C", "G", "K" & "P" Series)
- DTC P0278: Cylinder No. 6 Balance System ("C", "G", "K" & "P" Series)
- DTC P0281: Cylinder No. 7 Balance System ("C", "G", "K" & "P" Series)
- DTC P0284: Cylinder No. 8 Balance System ("C", "G", "K" & "P" Series)
- DTC P0300: Engine Misfire Detected ("C", "G", "K" & "P" Series)
- DTC P0301: Cylinder No. 1 Misfire Detected ("C", "G", "K" & "P" Series)
- DTC P0302: Cylinder No. 2 Misfire Detected ("C", "G", "K" & "P" Series)
- DTC P0303: Cylinder No. 3 Misfire Detected ("C", "G", "K" & "P" Series)
- DTC P0304: Cylinder No. 4 Misfire Detected ("C", "G", "K" & "P" Series)
- DTC P0305: Cylinder No. 5 Misfire Detected ("C", "G", "K" & "P" Series)
- DTC P0306: Cylinder No. 6 Misfire Detected ("C", "G", "K" & "P" Series)
- DTC P0307: Cylinder No. 7 Misfire Detected ("C", "G", "K" & "P" Series)
- DTC P0308: Cylinder No. 8 Misfire Detected ("C", "G", "K" & "P" Series)
- DTC P0335: Crankshaft Position (CKP) Sensor Circuit Performance ("C", "G", "K" & "P" Series)
- DTC P0370: Timing Reference High Resolution ("C", "G", "K" & "P" Series)
- DTC P0380: Glow Plug Circuit Performance ("C", "G", "K" & "P" Series)
- DTC P0400: EGR Flow Malfunction ("C" & "K" Series)
- DTC P0402: EGR System Flow Excessive ("C" & "K" Series)
- DTC P0404: EGR System Performance ("C" & "K" Series)
- DTC P0405: EGR Sensor Circuit Low Voltage ("C" & "K" Series)
- DTC P0406: EGR Sensor Circuit High Voltage ("C" & "K" Series)
- DTC P0501: Vehicle Speed Sensor Circuit ("C", "G", "K" & "P" Series)
- DTC P0567: Cruise Resume Circuit ("C", "G", "K" & "P" Series)
- DTC P0568: Cruise Set Circuit ("C", "G", "K" & "P" Series)
- DTC P0571: Cruise Brake Switch Circuit ("C", "G", "K" & "P" Series)
- DTC P0601: Pcm Memory ("C", "G", "K" & "P" Series)
- DTC P0602: Pcm Not Programmed ("C", "G", "K" & "P" Series)
- DTC P0604: Control Module Random Access Memory ("C", "G" & "K" Series)
- DTC P0606: Pcm Internal Communication Interrupted ("C", "G", "K" & "P" Series)
- DTC P1125: Accelerator Pedal Position (App) System ("C", "G", "K" & "P" Series)
- DTC P1191: Intake Air Duct Leak ("C" & "K" Series)
- DTC P1214: Injection Pump Timing Offset Error ("C", "G", "K" & "P" Series)
- DTC P1216: Fuel Solenoid Response Time Too Short ("C", "G", "K" & "P" Series)
- DTC P1217: Fuel Solenoid Response Time Too Long ("C", "G", "K" & "P" Series)
- DTC P1218: Injection Pump Calibration Circuit ("C", "G", "K" & "P" Series)
- DTC P1406: EGR Valve Position ("C" & "K" Series)
- DTC P1409: EGR Vacuum System Leak ("C" & "K" Series)
- DTC P1621: Pcm Memory Performance/EEPROM Write ("C", "G", "K" & "P" Series)
- DTC P1626: Vehicle Theft Deterrent (VTD) Controller Serial Data Circuit ("C", "G" & "K" Series)
- DTC P1627: A/D Performance ("C", "G", "K" & "P" Series)
- DTC P1630: Theft Deterrent Pcm In Learn Mode ("C" & "K" Series)
- DTC P1631: Theft Deterrent Password Incorrect ("C", "G" & "K" Series)
- DTC P1635: Pcm 5-Volt Reference Low ("C", "G", "K" & "P" Series)
- DTC P1641: Malfunction Indicator Light (Mil) Control Circuit ("C", "G", "K" & "P" Series)
- DTC P1643: Wait To Start Light Control Circuit ("C", "G" & "K" Series)
- DTC P1653: EGR Vent Solenoid Control Circuit ("C" & "K" Series)
- DTC P1654: Service Throttle Soon Light Control Circuit ("C", "G", "K"& "P" Series)
- DTC P1655: EGR Solenoid Control Circuit ("C" & "K" Series)
- DTC P1656: WASTEGATE Solenoid Control Circuit ("C", "G", "K" & "P" Series)
- DTC U1026: Loss Of ATC Class II Communication (6.5L "C" & "K" Series)
- DTC U1192: Loss Of EVO/VTD PASSLOCK® Communication (6.5L "C" & "K" Series)
- DTC U1192: Loss Of EVO/PASSLOCK® Communication (6.5L "G" Series)