U0055
Vehicle Communication Bus D
U0055 is an OBD-II diagnostic trouble code meaning: Vehicle Communication Bus D. Common causes: open or short circuit in bus wiring, corrosion of connector contacts. Estimated repair cost: $6–56.
Symptoms
- Unstable operation of the vehicle's electronic systems
- Occurrence of other CAN bus errors
- Disabling some features (such as climate control or multimedia)
- Flashing indicators on the dashboard
Causes
- Open or short circuit in bus wiring
- Corrosion of connector contacts
- Fault in one of the modules connected to the bus
- Problems with CAN bus power supply
How to Fix
- Check the integrity of the Communication Bus D wiring
- Inspect and clean connector contacts
- Check bus power
- Disable the modules one by one to identify the faulty one.
Related codes
Error U0055 by Vehicle Brand
FAQ
What does the U0055 code mean?
U0055 is an OBD-II diagnostic trouble code that indicates: Vehicle Communication Bus D
What causes a U0055 error code?
The most common causes of U0055 include: Open or short circuit in bus wiring; Corrosion of connector contacts; Fault in one of the modules connected to the bus; Problems with CAN bus power supply.
How do I fix a U0055 diagnostic trouble code?
To fix U0055: Check the integrity of the Communication Bus D wiring. Inspect and clean connector contacts. Check bus power. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0055?
Limited driving only, diagnose soon
How much does it cost to fix U0055?
The estimated repair cost for U0055 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
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