U0096

Vehicle Communication Bus H (+) High

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$13–89 (est.)

Symptoms

Check Engine light comes on
Failure of individual vehicle systems
Unstable operation of the dashboard
Problems starting the engine
Communication errors between modules

Causes

CAN H+ bus wire break
Short circuit to ground or power
Oxidation of contacts in connectors
Malfunction of one of the modules connected to the CAN network
Wiring harness damage

How to Fix

Visual inspection of CAN bus wiring
Checking the resistance and integrity of the CAN H+ line
Checking contacts in connectors for oxidation
Diagnostics of connected control modules
Replacing damaged wires or connectors

Related codes

U0100 U0121 U0140