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6.5L Diesel Engine Discuss the 6.5 GM diesel engine & associated components. Automatic transmission questions & problems belong in the 4L80/85 - 4L60E - 6L90 Transmission Forum

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Old 10-18-2004, 12:06 PM   #1 (permalink)
Turbine Doc
Join Date: Sep 2003
Posts: 8,014
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OBD II codes for FAQs 96 and later model years

ODB II Diagnostic codes OBDII compliant reader required to access codes.

Not all codes show as "hard codes" that light the SES light, some are stored in the history as discrete faults</DIR>

P0101 Mass Air Flow (MAF) System Performance

P0102 MAF Sensor Circuit Low Frequency

P0103 MAF Sensor Circuit High Frequency

P0112 Intake Air Temperature (IAT) Sensor Circuit Low Voltage

P0113 IAT Sensor Circuit High Voltage

P0117 Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage

P0118 ECT Sensor Circuit High Voltage

P0123 Accelerator Pedal Position (APP) Sensor 1 Circuit Performance

P0122 APP Sensor 1 Circuit Low Voltage

P0123 APP Sensor 1 Circuit High Voltage

P0126 Insufficient ECT for Stable Operation

P0182 Fuel Temperature Sensor Circuit Low Voltage

P0183 Fuel Temperature Sensor Circuit High Voltage

P0215 Engine Shut-Off Control Circuit

P0216 Injection Timing Control Circuit

P0219 Engine Over-speed Condition

P0220 APP Sensor 2 Circuit

P0221 APP Sensor 2 Circuit Performance

P0222 APP Sensor 2 Circuit Low Voltage

P0223 APP Sensor 2 Circuit High Voltage

P0225 APP Sensor 3 Circuit

P0226 APP Sensor 3 Circuit Performance

P0227 APP Sensor 3 Circuit Low Voltage

P0228 APP Sensor 3 Circuit High Voltage

P0231 Fuel Pump Feedback Circuit Low Voltage

P0236 Turbocharger Boost System

P0237 Turbo Boost Sensor Circuit Low Voltage

P0238 Turbo Boost Sensor Circuit High Voltage

P0251 Injection Pump Cam System

P0263 Cylinder 1 Balance System

P0266 Cylinder 2 Balance System

P0269 Cylinder 3 Balance System

P0272 Cylinder 4 Balance System

P0275 Cylinder 5 Balance System

P0278 Cylinder 6 Balance System

P0281 Cylinder 7 Balance System

P0284 Cylinder 8 Balance System

P0300 Engine Misfire Detected

P0301 Cylinder 1 Misfire Detected

P0302 Cylinder 2 Misfire Detected

P0303 Cylinder 3 Misfire Detected

P0304 Cylinder 4 Misfire Detected

P0305 Cylinder 5 Misfire Detected

P0306 Cylinder 6 Misfire Detected

P0307 Cylinder 7 Misfire Detected

P0308 Cylinder 8 Misfire Detected

P0335 Crankshaft Position (CKP) Sensor Circuit

P0370 Timing Reference High Resolution

P0380 Glow Plug Circuit Performance

P0400 Exhaust Gas Recirculation (EGR) Flow Malfunction

P0401 EGR Flow Insufficient

P0402 EGR Flow Excessive

P0404 EGR System Performance

P0405 EGR Sensor Circuit Low Voltage

P0406 EGR Sensor Circuit High Voltage

P0501 Vehicle Speed Sensor Circuit (VSS)

P0567 Cruise Resume Circuit

P0568 Cruise Set Circuit

P0571 Cruise Brake Switch Circuit

P0601 Internal Control Module Memory

P0602 Control Module Programming

P0604 Control Module RAM Check Sum

P0606 PCM Internal Communications Interrupted

P1125 Accelerator Pedal Position System

P1191 Intake Air Duct Leak

P1214 Injection Pump Timing Offset

P1216 Fuel Solenoid Response Time Short

P1217 Fuel Solenoid Response Time Long

P1218 Injection Pump Calibration Circuit

P1406 EGR Valve Position

P1409 EGR Vacuum System Leak

P1621 EEPROM Write

P1626 Vehicle Theft Deterrent (VTD) Controller Serial Data Circuit

P1627 A/D Performance

P1630 Theft Deterrent PCM in Learn Mode

P1631 Theft Deterrent Password Incorrect

P1635 5 Volt Reference Low

P1641 Malfunction Indicator Lamp (MIL) Control Circuit

P1643 Wait To Start Lamp Control Circuit

P1653 EGR Vent Solenoid Control Circuit

P1654 Service Throttle Soon Lamp Control Circuit

P1655 EGR Solenoid Control Circuit

P1656 Wastegate Solenoid Control Circuit

U1026 Loss of ATC Class 2 Co

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