U0047

Vehicle Communication Bus C Performance

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$6–56 (est.)

Symptoms

Incorrect operation of electronic systems
Check Engine light comes on
Loss of communication between modules
Dashboard malfunctions

Causes

Damage to CAN bus wiring
Malfunction of one of the electronic modules
Short circuit in the circuit
Interference on the CAN network

How to Fix

Check the integrity of the CAN bus wiring
Diagnose all connected modules
Check connections and connectors
Replace damaged wires or modules

Related codes

U0046 U0048 U0056