U01B0
Lost Communication With Battery Monitor Module
U01B0 is an OBD-II diagnostic trouble code meaning: Lost Communication With Battery Monitor Module. Common causes: broken or damaged wires in the communication circuit, malfunction of the battery monitoring module. Estimated repair cost: $56–278.
Symptoms
- Check Engine light comes on
- Incorrect display of battery charge level
- The car goes into emergency mode
- Problems starting the engine
- Reduced performance of the hybrid system
Causes
- Broken or damaged wires in the communication circuit
- Malfunction of the battery monitoring module
- Module power problems
- Short circuit in the CAN bus circuit
- Software error in the ECU
How to Fix
- Check the integrity of the wiring harness to the module
- Check fuses associated with the module
- Diagnose the battery monitoring module
- Check CAN bus connections
- Update ECU firmware if necessary
Related codes
Error U01B0 by Vehicle Brand
FAQ
What does the U01B0 code mean?
U01B0 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Battery Monitor Module
What causes a U01B0 error code?
The most common causes of U01B0 include: Broken or damaged wires in the communication circuit; Malfunction of the battery monitoring module; Module power problems; Short circuit in the CAN bus circuit.
How do I fix a U01B0 diagnostic trouble code?
To fix U01B0: Check the integrity of the wiring harness to the module. Check fuses associated with the module. Diagnose the battery monitoring module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U01B0?
Limited driving only, diagnose soon
How much does it cost to fix U01B0?
The estimated repair cost for U01B0 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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