U0111

Lost Communication With Battery Energy Control Module A

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

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

U0100 U0110 U0112