U0068

Vehicle Communication Bus E (+) High

Severity

🔴 High

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$6–56 (est.)

Symptoms

Incorrect operation of the vehicle's electronic systems
The Check Engine light comes on
Loss of communication with some control units
Problems starting the engine
Dashboard malfunctions

Causes

Damage to CAN bus wiring
Fault in one of the modules connected to the bus
Problems with module power supply
Short circuit in the CAN bus circuit
Corrosion of contacts in connectors

How to Fix

Check the integrity of the CAN bus wiring
Check the voltage on the CAN bus
Disable the modules one by one to identify the faulty one.
Check connectors and contacts for corrosion
Replace damaged components if necessary

Related codes

U0065 U0066 U0067