U0059

Vehicle Communication Bus D (+) High

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$6–56 (est.)

Symptoms

Check Engine light comes on
Incorrect operation of electronic systems
Lost connection with some modules
Problems starting the engine
Dashboard malfunctions

Causes

CAN High (+) wire break
Short circuit in CAN bus
Oxidation or damage to contacts in connectors
Malfunction of one of the CAN network modules
Wiring harness damage

How to Fix

Check the integrity of the CAN High (+) wire
Inspect connectors and contacts for damage
Check the resistance and voltage in the CAN bus
Disable the modules one by one to find the faulty one.
Replacing damaged wiring sections

Related codes

U0058 U0060 U0064