U0083
Vehicle Communication Bus F + Low
U0083 is an OBD-II diagnostic trouble code meaning: Vehicle Communication Bus F + Low. Common causes: open or short circuit in the can f bus wiring, poor contact in connectors. Estimated repair cost: $6–56.
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
Error U0083 by Vehicle Brand
FAQ
What does the U0083 code mean?
U0083 is an OBD-II diagnostic trouble code that indicates: Vehicle Communication Bus F + Low
What causes a U0083 error code?
The most common causes of U0083 include: 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.
How do I fix a U0083 diagnostic trouble code?
To fix U0083: 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). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0083?
Limited driving only, diagnose soon
How much does it cost to fix U0083?
The estimated repair cost for U0083 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
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