U01BF

Symptoms

• Check Engine light comes on
• Possible problems starting the engine
• Reduced charging system efficiency
• Errors in the operation of other electronic systems of the car
• The car may go into emergency mode

Causes

• Open or short circuit in the CAN bus
• Problems with power supply to the battery management module
• Malfunction of the control module itself
• Bad contacts in connectors
• Problems with module mass

How to Fix

1. Check fuses associated with the battery control module
2. Check the integrity of the CAN bus wiring
3. Check the quality of connections and contacts in the connectors
4. Diagnose the battery control module
5. If necessary, replace the control module

Related codes

Error U01BF by Vehicle Brand