BMW electric a/c compressor fault codes
The 29 fault codes the electric a/c compressor can store, and what each one means. Some codes mean different things in different versions of the module; tap a code to see which applies to your car.
On: X6 (E72)
- A9C8 Electric A/C compressor: high-voltage electrical system, undervoltage detected
- A9C9 Electric A/C compressor: high-voltage electrical system, overvoltage detected
- A9CA Electric A/C compressor: high-voltage electrical system, high voltage outside tolerance
- A9CB Electric A/C compressor: overtemperature detected at voltage transformer
- A9CC Electric A/C compressor: fault detected at temperature sensor
- A9CD Electric A/C compressor: short circuit detected at power output
- A9CE Electric A/C compressor: open circuit detected at power output
- A9CF Electric A/C compressor: fault detected at sensor system for current measurement
- A9D1 Electric A/C compressor: overcurrent detected
- A9D2 Electric A/C compressor: fault detected during internal checksum comparison
- A9D3 Electric A/C compressor: internal communication fault detected
- A9D4 Electric A/C compressor: fault detected during start-up
- A9D5 Electric A/C compressor: overpressure detected in refrigerant circuit
- A9D6 Electric A/C compressor: overvoltage detected in low-voltage electrical system
- A9D7 Electric A/C compressor: undervoltage detected in low-voltage electrical system
- A9D8 Electric A/C compressor: internal fault detected during self-test
- A9D9 Low coolant pressure
- A9DA Electric A/C compressor: Restricted function due to limitation in motor current of electric A/C compressor
- A9DB Electric A/C compressor: Restricted function due to voltage limitation
- A9DC Electric A/C compressor: Restricted function due to inverter overheating
- A9DD Function limitation due to power limitation - temporary situation - compressor replacement not required!
- DCC4 Electric A/C compressor, K-CAN: communication fault
- DCC6 No message (ambient temperature/reference time, 0x310), receiver EKK, transmitter KOMBI
- DCC7 No message (release, electric A/C compressor, 0x29C), receiver EKK, transmitter HIM
- DCC8 No message (kilometer reading, 0x330), receiver EKK, transmitter KOMBI
- DCC9 No message (terminal status, 0x130), receiver EKK, transmitter CAS
- DCCA No message (status, pressure, refrigerant circuit, 0x2D2), receiver EKK, transmitter JBE
- DCCC No message (control, air conditioning compressor, electrical, 0x29D), receiver EKK, transmitter IHKA
- DCCD No message (status, high-voltage battery, 0x2B7), receiver EKK, transmitter HIM
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