U0083

Vehicle Communication Bus F + Low

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$6–56 (est.)

Symptoms

Check Engine light comes on
Malfunctions of various vehicle systems
Problems with diagnostics via OBD-II connector
Unstable operation of the dashboard
Lost connection with some modules

Causes

Open or short circuit in the CAN F bus wiring
Poor contact in connectors
Contact corrosion
Fault in one of the modules connected to the bus
Problems with module power supply

How to Fix

Check the integrity of the CAN F bus wiring
Inspect and clean all connectors associated with the bus
Check the voltage on the CAN bus (should be about 2.5V)
Disable the modules one by one to identify the faulty one.
Check fuses associated with modules

Related codes

U0100 U0121 U0140