U0080

Vehicle Communication Bus F

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$6–56 (est.)

Symptoms

Check Engine Light Is On
Some car systems do not work (climate control, cruise control, etc.)
Problems starting the engine
Dashboard malfunctions
Lost connection with diagnostic equipment

Causes

Open or short circuit in the CAN bus wiring
Fault in one of the modules connected to the bus
Damage to connectors or corrosion of contacts
Problems with module power supply
Software failure in one of the control units

How to Fix

Check the integrity of the CAN bus wiring
Inspect connectors and contacts for damage and corrosion
Check the power supply of all modules connected to the bus
Disable the modules one by one to identify the faulty one.
Reset the error and check if it returns

Related codes

U0100 U0121 U0140