U0075

Control Module Communication Bus C Off

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$6–56 (est.)

Symptoms

Check Engine Light Is On
Failure of some vehicle systems
Electrical problems
Reduced engine performance
Errors in other modules

Causes

Open or short circuit in the CAN bus
Poor contact in connectors
Failure of one of the modules on the bus
Wiring harness damage
Problems with module power supply

How to Fix

Check the integrity of the CAN bus
Inspect connectors and contacts for oxidation
Check the power supply of all modules on the bus
Disable the modules one by one to find the faulty one.
Check the resistance and integrity of the CAN bus wires

Related codes

U0073 U0074 U0076