GMC fault codes
Coverage shown is GM data: 17,703 codes · 2,212 vehicle records · 180 ECU records · 10,756 live-data parameters.
GMC shares fault-code data with GM. Data may not cover GMC-specific systems.
Codes 17,703
| Code | Description | Brands | System |
|---|---|---|---|
| P1D50 | Inductance over-temperature | 13 | Powertrain |
| P1D51 | AC input voltage sensor (2) low | 13 | Powertrain |
| P1D52 | Internal circuit (1) | 13 | Powertrain |
| P1D55 | Power network AC voltage phase sequence error | 14 | Powertrain |
| P1D56 | ESD hold circuit | 16 | Powertrain |
| P1D57 | Battery charger RAM error | 15 | Powertrain |
| P1D58 | PFC output voltage sensor range | 16 | Powertrain |
| P1D5A | FPS-ohjaimen virtapiiri | 10 | Powertrain |
| P1D5B | Sensorvoeding C circuitfout | 10 | Powertrain |
| P1D5C | Krug uzemljenja senzora 1 | 10 | Powertrain |
| P1D5E | Toiteahela 1 viga | 10 | Powertrain |
| P1D71 | Motor control unit (MCU) temperature sensor sampling value exceeds the valid range | 14 | Powertrain |
| P1D72 | U phase current sensor sampling value exceeds the valid range | 16 | Powertrain |
| P1D74 | Phase current sensor sampling value is too large | 14 | Powertrain |
| P1D77 | Excitation line interlock circuit abnormal (short circuit or open circuit) | 16 | Powertrain |
| P1D78 | Park Solenoid Circuit Low | 15 | Powertrain |
| P1D79 | Park Solenoid Circuit High | 15 | Powertrain |
| P1D7A | U phase circuit interruption | 13 | Powertrain |
| P1D92 | Position sensor cosine sampling value is abnormal | 16 | Powertrain |
| P1D98 | Position sensor feedback line short circuit to battery (+) | 14 | Powertrain |
| P1D9B | Incorrect gear ratio: clutch A or E defective | 14 | Powertrain |
| P1D9C | Incorrect gear ratio: clutch A or C defective | 14 | Powertrain |
| P1D9D | Incorrect gear ratio: clutch B or C defective | 15 | Powertrain |
| P1D9E | Feil girforhold: clutch C eller E defekt | 14 | Powertrain |
| P1D9F | Incorrect gear ratio: clutch D or E defective | 14 | Powertrain |
| P1DA0 | Output overvoltage | 16 | Powertrain |
| P1DA1 | Output under-voltage | 16 | Powertrain |
| P1DA4 | Input overvoltage | 16 | Powertrain |
| P1DA5 | Input undervoltage | 16 | Powertrain |
| P1DA6 | DC1 input overvoltage | 16 | Powertrain |
| P1DAB | DC/DC converter undervoltage | 16 | Powertrain |
| P1DAC | DC/DC converter low-voltage output voltage value exceeds the valid range | 16 | Powertrain |
| P1DAF | Incompatible limp in action requested | 14 | Powertrain |
| P1DB0 | DC/DC converter transformer temperature sensor abnormal | 15 | Powertrain |
| P1DB1 | DC/DC converter power module temperature sensor is abnormal | 15 | Powertrain |
| P1DC0 | Lost power for FPS control module | 11 | Powertrain |
| P1DC1 | Hydrogen supply valve pressure control error | 12 | Powertrain |
| P1DC2 | HV Battery Pack Voltage Uneven | 11 | Powertrain |
| P1DC3 | Stack voltage error | 11 | Powertrain |
| P1DC4 | Stack coolant insulation fail & coolant conductivity low | 11 | Powertrain |
| P1DC5 | Hydrogen leak in the engine room area | 12 | Powertrain |
| P1DCB | Vetyvuoto hytissä | 11 | Powertrain |
| P1DCC | Fuel pressure sensor control erratic | 12 | Powertrain |
| P1DCD | TCM monitoring processor performance - multiple clutches locked up | 14 | Powertrain |
| P1DCE | Abiaku aku pinge kõrge | 13 | Powertrain |
| P1DE1 | IR communication error | 10 | Powertrain |
| P1DE2 | High pressure solenoid valve 1 open | 10 | Powertrain |
| P1DE3 | High pressure solenoid valve 2 open | 11 | Powertrain |
| P1DE4 | VCU V1 Voltage Sensor Circuit | 10 | Powertrain |
| P1DE5 | VCU V2M Voltage Sensor Circuit High | 9 | Powertrain |
Some brand data is extracted from diagnostic files and may contain manufacturer-specific wording. General SAE J2012 descriptions are used where available.