U0059
Vehicle Communication Bus D (+) High
U0059 is an OBD-II diagnostic trouble code meaning: Vehicle Communication Bus D (+) High. Common causes: can high (+) wire break, short circuit in can bus. Estimated repair cost: $6–56.
Symptoms
- Check Engine light comes on
- Incorrect operation of electronic systems
- Lost connection with some modules
- Problems starting the engine
- Dashboard malfunctions
Causes
- CAN High (+) wire break
- Short circuit in CAN bus
- Oxidation or damage to contacts in connectors
- Malfunction of one of the CAN network modules
- Wiring harness damage
How to Fix
- Check the integrity of the CAN High (+) wire
- Inspect connectors and contacts for damage
- Check the resistance and voltage in the CAN bus
- Disable the modules one by one to find the faulty one.
- Replacing damaged wiring sections
Related codes
Error U0059 by Vehicle Brand
FAQ
What does the U0059 code mean?
U0059 is an OBD-II diagnostic trouble code that indicates: Vehicle Communication Bus D (+) High
What causes a U0059 error code?
The most common causes of U0059 include: CAN High (+) wire break; Short circuit in CAN bus; Oxidation or damage to contacts in connectors; Malfunction of one of the CAN network modules.
How do I fix a U0059 diagnostic trouble code?
To fix U0059: Check the integrity of the CAN High (+) wire. Inspect connectors and contacts for damage. Check the resistance and voltage in the CAN bus. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0059?
Do not drive — repair immediately
How much does it cost to fix U0059?
The estimated repair cost for U0059 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
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