U0065

Vehicle Communication Bus E Performance

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$17–167 (est.)

Symptoms

The Check Engine light comes on
Incorrect operation of various vehicle systems
Lost connection with diagnostic equipment
Dashboard malfunctions

Causes

Broken or damaged CAN bus wires
Corrosion or oxidation of contacts in connectors
Malfunction of one of the vehicle's electronic modules
Problems with power supply of electronic modules
Software failures in modules

How to Fix

Check the integrity of the CAN bus wiring
Inspect and clean the contacts in the CAN bus connectors
Check power supply and grounding of electronic modules
Carry out diagnostics of all modules connected to the CAN bus

Related codes

U0064 U0066 U0067