U0055

Vehicle Communication Bus D

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$6–56 (est.)

Symptoms

Unstable operation of the vehicle's electronic systems
Occurrence of other CAN bus errors
Disabling some features (such as climate control or multimedia)
Flashing indicators on the dashboard

Causes

Open or short circuit in bus wiring
Corrosion of connector contacts
Fault in one of the modules connected to the bus
Problems with CAN bus power supply

How to Fix

Check the integrity of the Communication Bus D wiring
Inspect and clean connector contacts
Check bus power
Disable the modules one by one to identify the faulty one.

Related codes

U0056 U0057 U0058