U0051
Vehicle Communication Bus C (-) Open
U0051 is an OBD-II diagnostic trouble code meaning: Vehicle Communication Bus C (-) Open. Common causes: can-c bus wire break, short circuit in the circuit. Estimated repair cost: $6–56.
Symptoms
- Inoperative or incorrectly functioning vehicle systems
- The Check Engine light comes on
- Problems with diagnostics via OBD-II connector
- Dashboard malfunctions
- Communication errors between modules
Causes
- CAN-C bus wire break
- Short circuit in the circuit
- Oxidized or damaged contacts
- Malfunction of one of the modules in the network
- Wiring harness damage
How to Fix
- Visual inspection of CAN-C bus wiring
- Checking resistance and continuity
- Diagnostics of contacts in connectors
- Replacing damaged wiring sections
- Flashing or replacing faulty modules
Related codes
Error U0051 by Vehicle Brand
FAQ
What does the U0051 code mean?
U0051 is an OBD-II diagnostic trouble code that indicates: Vehicle Communication Bus C (-) Open
What causes a U0051 error code?
The most common causes of U0051 include: CAN-C bus wire break; Short circuit in the circuit; Oxidized or damaged contacts; Malfunction of one of the modules in the network.
How do I fix a U0051 diagnostic trouble code?
To fix U0051: Visual inspection of CAN-C bus wiring. Checking resistance and continuity. Diagnostics of contacts in connectors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0051?
Yes, but get it checked soon
How much does it cost to fix U0051?
The estimated repair cost for U0051 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat