U0082

Vehicle Communication Bus F + Open

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$6–111 (est.)

Symptoms

Check Engine light comes on
Failure of several vehicle systems at the same time
Incorrect dashboard readings
Problems starting the engine
Lost connection with diagnostic equipment

Causes

Physical damage to the CAN bus wiring
Corroded or oxidized connectors
Malfunction of one of the modules in the network
Problems with module power supply
Incorrect connection of additional equipment

How to Fix

Visual inspection of the CAN bus wiring for damage
Checking the continuity and resistance of the CAN bus
Diagnostics of communication quality between modules
Checking power supply and grounding of modules
Replacing damaged wiring sections or faulty modules

Related codes

U0100 U0121 U0140