U0053

Vehicle Communication Bus C (-) High

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$6–56 (est.)

Symptoms

Check Engine Light Is On
Incorrect operation of various vehicle systems
Lack of communication with some modules during diagnostics
Problems starting the engine
Dashboard malfunctions

Causes

Open or short circuit in CAN-C bus wiring
Fault in one of the modules connected to the bus
Problems with module power supply
Corrosion or poor contact in connectors
Damage to CAN bus terminators

How to Fix

Check the integrity of the CAN-C bus wiring
Check voltage and resistance on the bus
Disable the modules one by one to find the faulty one.
Check power supply and grounding of modules
Check the condition of connectors and contacts

Related codes

U0051 U0052 U0054