U0037
Vehicle Communication Bus B
U0037 is an OBD-II diagnostic trouble code meaning: Vehicle Communication Bus B. Common causes: open or short circuit in bus b bus circuit, poor contact in connection connectors. Estimated repair cost: $6–56.
Symptoms
- Incorrect operation of secondary systems (climate control, audio system)
- Malfunction indicator light comes on
- Intermittent electronic malfunctions
- Lack of communication with some modules during diagnostics
Causes
- Open or short circuit in Bus B bus circuit
- Poor contact in connection connectors
- Fault in one of the connected modules
- Wiring harness damage
- Software failure in one of the control units
How to Fix
- Check continuity of Bus B wiring
- Inspect and clean all connection connectors
- Carry out diagnostics of connected modules
- Check power and ground on problem modules
- Update control unit software
Related codes
Error U0037 by Vehicle Brand
FAQ
What does the U0037 code mean?
U0037 is an OBD-II diagnostic trouble code that indicates: Vehicle Communication Bus B
What causes a U0037 error code?
The most common causes of U0037 include: Open or short circuit in Bus B bus circuit; Poor contact in connection connectors; Fault in one of the connected modules; Wiring harness damage.
How do I fix a U0037 diagnostic trouble code?
To fix U0037: Check continuity of Bus B wiring. Inspect and clean all connection connectors. Carry out diagnostics of connected modules. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0037?
Yes, but get it checked soon
How much does it cost to fix U0037?
The estimated repair cost for U0037 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat