U0089

Vehicle Communication Bus G

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$6–56 (est.)

Symptoms

Check Engine light comes on
Malfunctions of the car's electronic systems
Lost connection with some modules
Unstable engine operation
Problems with diagnostics via OBD-II

Causes

Open or short circuit in bus G
Wiring harness damage
Malfunction of one of the electronic modules
Connector problems or contact corrosion
Failures in module software

How to Fix

Check the integrity of the G bus wiring harness
Inspect connectors and contacts for damage
Check power and ground on modules
Scan all modules for additional errors
Replace damaged components if necessary

Related codes

U0087 U0088 U0090