Generic Fault Codes & DTC List
Manufacturer and ECU-specific fault-code meanings. Check the stated ECU, model and code format against your diagnostic scan.
| Code | Meaning | Applicability |
|---|---|---|
| P0622 | Alternator, field control -circuit malfunction | Generic Generic OBD |
| P0623 | Generator control lamp -circuit malfunction | Generic Generic OBD |
| P0624 | Filler cap control lamp -circuit malfunction | Generic Generic OBD |
| P0625 | Generator field terminal -circuit low | Generic Generic OBD |
| P0626 | Generator field terminal -circuit high | Generic Generic OBD |
| P0627 | Fuel pump control -circuit open | Generic Generic OBD |
| P0628 | Fuel pump control -circuit low | Generic Generic OBD |
| P0629 | Fuel pump control -circuit high | Generic Generic OBD |
| P062A | Fuel Pump "A" Control Circuit Range/Performance | Generic Generic OBD |
| P062B | Internal Control Module Fuel Injector Control Performance | Generic Generic OBD |
| P062C | Internal Control Module Vehicle Speed Performance | Generic Generic OBD |
| P062D | Fuel Injector Driver Circuit Performance | Generic Generic OBD |
| P062E | Fuel Injector Driver Circuit Performance | Generic Generic OBD |
| P062F | Internal Control Module EEPROM Error | Generic Generic OBD |
| P0630 | VIN not programmed or mismatch -ECM/PCM | Generic Generic OBD |
| P0631 | VIN not programmed or mismatch -TCM | Generic Generic OBD |
| P0632 | Odometer not programmed -ECM/PCM | Generic Generic OBD |
| P0633 | Immobilizer key not programmed -ECM/PCM | Generic Generic OBD |
| P0634 | PCM/ECM/TCM -internal temperature too high | Generic Generic OBD |
| P0635 | Power steering control -circuit malfunction | Generic Generic OBD |
| P0636 | Power steering control -circuit low | Generic Generic OBD |
| P0637 | Power steering control -circuit high | Generic Generic OBD |
| P0638 | Throttle actuator control, bank 1 -range/performance problem | Generic Generic OBD |
| P0639 | Throttle actuator control, bank 2 -range/performance | Generic Generic OBD |
| P063A | Generator Voltage Sense Circuit | Generic Generic OBD |
| P063B | Generator Voltage Sense Circuit Range/Performance | Generic Generic OBD |
| P063C | Generator Voltage Sense Circuit Low | Generic Generic OBD |
| P063D | Generator Voltage Sense Circuit High | Generic Generic OBD |
| P063E | Auto Configuration Throttle Input Not Present | Generic Generic OBD |
| P063F | Auto Configuration Engine Coolant Temperature Input Not Present | Generic Generic OBD |
| P0640 | Intake air heater control -circuit malfunction | Generic Generic OBD |
| P0641 | Sensor reference voltage A -circuit open | Generic Generic OBD |
| P0642 | Engine control module (ECM), knock control -defective | Generic Generic OBD |
| P0643 | Sensor reference voltage A -circuit high | Generic Generic OBD |
| P0644 | Driver display, serial communication -circuit malfunction | Generic Generic OBD |
| P0645 | Air conditioning (AC) | Generic Generic OBD |
| P0646 | AC compressor clutch relay -circuit low | Generic Generic OBD |
| P0647 | AC compressor clutch relay -circuit high | Generic Generic OBD |
| P0648 | Immobilizer control lamp -circuit malfunction | Generic Generic OBD |
| P0649 | Cruise control lamp -circuit | Generic Generic OBD |
| P064A | Fuel Pump Control Module | Generic Generic OBD |
| P064B | PTO Control Module | Generic Generic OBD |
| P064C | Glow Plug Control Module | Generic Generic OBD |
| P064D | Internal Control Module O2 Sensor Processor Performance | Generic Generic OBD |
| P064E | Internal Control Module O2 Sensor Processor Performance | Generic Generic OBD |
| P064F | Unauthorized Software/Calibration Detected | Generic Generic OBD |
| P0650 | Malfunction indicator lamp (MIL) -circuit malfunction | Generic Generic OBD |
| P0651 | Sensor reference voltage B -circuit open | Generic Generic OBD |
| P0652 | Sensor reference voltage B -circuit low | Generic Generic OBD |
| P0653 | Sensor reference voltage B -circuit high | Generic Generic OBD |
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