NetworkU007D
SeriousSeverity: Serious - have it checked soon
Control Module Communication Bus K Off
Key terms: Control module: a small computer that runs one part of the car · SAE J2012: the standard generic code list
1What it means in plain English
Control modules in the car cannot communicate with each other over the vehicle network.
2Common causes
- Wiring or connector fault on the communication bus
- Faulty control module
- Low battery voltage or poor ground
- Water ingress in a connector or module
- Aftermarket device interfering with the bus
3Can I drive?
The car may run normally or may not run at all. If the module that has lost communication controls steering, brakes, park brake, charging or engine cooling, drive only if those systems feel normal; stop safely if the steering becomes heavy, a brake warning appears, or the engine temperature climbs. If the car will not start or runs badly, have it towed.
This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.
4Brand data 14
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | U007D | Control Module Communication Bus K Off SAE | Network |
| Daewoo | U007D | Control Module Communication Bus K Off SAE | Network |
| EOBD | U007D | Juhtmoduli sidebuss 'K' väljas Brand | Network |
| GM | U007D | Control Module Communication Bus K Off SAE | Network |
| Holden | U007D | Control Module Communication Low Speed Extension CAN Bus Off Brand | Network |
| Honda | U007D | Control Module Communication Bus K Off SAE | Network |
| Land Rover | U007D | Control Module Communication Bus K Off SAE | Network |
| Opel | U007D | Control Module Communication Bus K Off SAE | Network |
| Peugeot | U007D | Control Module Communication Bus K Off SAE | Network |
| Saab | U007D | Control Module Communication Bus K Off SAE | Network |
| Maxus (SAIC) | U007D | PE-CAN bus off Brand | Network |
| MG (SAIC) | U007D | PE-CAN bus off Brand | Network |
| Subaru | U007D | Control Module Communication Bus K Off SAE | Network |
| Suzuki | U007D | Control Module Communication Bus K Off SAE | Network |
Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.
5Extended variant codes 6
These 7-character codes are manufacturer-specific variants of U007D and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | U007D81 | Control Module Communication Bus 'K' Off - Invalid error for DC Temp related msgs Brand | Network |
| Mercedes-Benz | U007D82 | Control Module Communication Bus 'K' Off - E2E error for DC Temp related msgs Brand | Network |
| Mercedes-Benz | U007D86 | Control Module Communication Bus 'K' Off - DCTempsens Occurrence Brand | Network |
| Mercedes-Benz | U007D87 | Control Module Communication Bus 'K' Off - Timeout with respect to DC Temp related messages. Brand | Network |
| Mercedes-Benz | U007DA2 | Control Module Communication Bus 'K' Off - DCTempsens Under Voltage Brand | Network |
| Mercedes-Benz | U007DA3 | Control Module Communication Bus 'K' Off - DCTempsens OverVoltage Brand | Network |
6Related codes
Browse Uxxx codes or U007xx codes.