U0111
Lost Communication With Battery Energy Control Module A
U0111 is an OBD-II diagnostic trouble code meaning: Lost Communication With Battery Energy Control Module A. Common causes: open or short circuit in the communication circuit, damaged or oxidized connectors. Estimated repair cost: $56–278.
Symptoms
- Check Engine Light Is On
- Reduced vehicle performance
- Battery charging problems
- Failure of systems dependent on BECM
- Errors in other vehicle systems
Causes
- Open or short circuit in the communication circuit
- Damaged or oxidized connectors
- Battery control module (BECM) malfunction
- Problems with the main ECU
- Software failures in the control system
How to Fix
- Check the integrity of the wiring and connectors in the communication circuit
- Scan all modules for additional errors
- Check power and ground of BECM module
- Test or replace the battery management module
- If necessary, update the ECU software
Related codes
Error U0111 by Vehicle Brand
FAQ
What does the U0111 code mean?
U0111 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Battery Energy Control Module A
What causes a U0111 error code?
The most common causes of U0111 include: Open or short circuit in the communication circuit; Damaged or oxidized connectors; Battery control module (BECM) malfunction; Problems with the main ECU.
How do I fix a U0111 diagnostic trouble code?
To fix U0111: Check the integrity of the wiring and connectors in the communication circuit. Scan all modules for additional errors. Check power and ground of BECM module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0111?
Limited driving only, diagnose soon
How much does it cost to fix U0111?
The estimated repair cost for U0111 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat