U01BB
Lost Communication With Battery Charger Control Module B
U01BB is an OBD-II diagnostic trouble code meaning: Lost Communication With Battery Charger Control Module B. Common causes: broken or damaged wires in the communication circuit, battery charging control module b faulty. Estimated repair cost: $56–278.
Symptoms
- Check Engine light comes on
- Reduced battery charging efficiency
- Problems starting the engine
- Power reduction in hybrid systems
- Errors in the charging system on the dashboard
Causes
- Broken or damaged wires in the communication circuit
- Battery charging control module B faulty
- Connector problems or contact corrosion
- Failures in ECU software
- Module power problems
How to Fix
- Check the integrity of the wiring harness and connectors
- Check the power and ground of the control module
- Scan the module for additional errors
- Replace the charging control module if necessary
- Update ECU software if necessary
Related codes
Error U01BB by Vehicle Brand
FAQ
What does the U01BB code mean?
U01BB is an OBD-II diagnostic trouble code that indicates: Lost Communication With Battery Charger Control Module B
What causes a U01BB error code?
The most common causes of U01BB include: Broken or damaged wires in the communication circuit; Battery charging control module B faulty; Connector problems or contact corrosion; Failures in ECU software.
How do I fix a U01BB diagnostic trouble code?
To fix U01BB: Check the integrity of the wiring harness and connectors. Check the power and ground of the control module. Scan the module for additional errors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U01BB?
Limited driving only, diagnose soon
How much does it cost to fix U01BB?
The estimated repair cost for U01BB is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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