U0076

Control Module Communication Bus D Off

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$6–111 (est.)

Symptoms

Check Engine Light Is On
Incorrect operation of various vehicle systems
Lack of communication with some modules during diagnostics
Intermittent electronic malfunctions

Causes

Open or short circuit in the CAN bus wiring
Corroded or damaged connectors
Malfunction of one of the control modules
Problems with module power supply
Damage to CAN bus terminators

How to Fix

Visual inspection of CAN bus wiring and connectors
Checking the resistance and integrity of CAN wires
Diagnostics of modules connected to the bus
Checking power supply and grounding of modules
Replacing damaged CAN network components

Related codes

U0073 U0074 U0075