NetworkU0076

Serious

Severity: Serious - have it checked soon

Control Module Communication Bus D Off

23 brands affected · Generic SAE J2012 description.

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?

Serious · drive with care

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 23

Brand	Code	Description	System
Ashok Leyland CV	U0076	Control Module Communication Bus D Off SAE	Network
BAIC Motor	U0076	EMS_ID114 exception: lost or timeout Brand	Network
Mercedes-Benz	U0076	Control Module Communication Bus D Off SAE	Network
Chery	U0076	Current/voltage sensor CAN Bus Off Brand	Network
Daewoo	U0076	Control Module Communication Bus D Off SAE	Network
Daihatsu	U0076	CAN gateway BUS6 communication error Brand	Network
DFFS	U0076	Kick LIN bus short circuit to ground Brand	Network
EOBD	U0076	Juhtmoduli sidebuss 'D' väljas Brand	Network
Ford	U0076	Control Module Communication Bus D Off SAE	Network
GM	U0076	Control Module Communication Bus D Off SAE	Network
Holden	U0076	Battery Energy Control Module Internal Bus Off Brand	Network
Isuzu	U0076	Control Module Communication Bus D Off SAE	Network
Land Rover	U0076	Control Module Communication Bus 'D' Off Brand	Network
Mitsubishi	U0076	Control Module Communication Bus D Off SAE	Network
Opel	U0076	Control Module Communication Bus D Off SAE	Network
Perodua	U0076	CAN gateway BUS6 communication error Brand	Network
Peugeot	U0076	Control Module Communication Bus D Off SAE	Network
Saab	U0076	Control Module Communication Bus D Off SAE	Network
Maxus (SAIC)	U0076	Bus Off on AD CAN Brand	Network
MG (SAIC)	U0076	Bus Off on AD CAN Brand	Network
Subaru	U0076	Control Module Communication Bus D Off SAE	Network
Suzuki	U0076	Control Module Communication Bus D Off SAE	Network
Toyota	U0076	Control module communication bus 'D' off Brand	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 2

These 7-character codes are manufacturer-specific variants of U0076 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	U007600	Hybrid CAN bus OFF error Brand	Network
Mercedes-Benz	U007688	Hybrid CAN bus OFF error Bus off. Brand	Network

6Related codes

Browse Uxxx codes or U007xx codes.