What does code U014A mean?

Q: What does code U014A mean?

Lost Communication With Battery Energy Control Module C. U014A indicates that the vehicle's control modules have lost communication with the Battery Energy Control Module C (BECM C), which is the controller responsible for monitoring and managing the high-voltage battery pack in hybrid and electric vehicles. The code is set when the module that expects regular status messages from the BECM C stops receiving them within the required time window, often due to a wiring fault, power loss, or internal module failure.

DTC codes / U01xx · Lost communication with a control module / U014A

U014ALost Communication With Battery Energy Control Module C

U014A indicates that the vehicle's control modules have lost communication with the Battery Energy Control Module C (BECM C), which is the controller responsible for monitoring and managing the high-voltage battery pack in hybrid and electric vehicles. The code is set when the module that expects regular status messages from the BECM C stops receiving them within the required time window, often due to a wiring fault, power loss, or internal module failure.

SystemNetwork

Code typeGeneric (all makes)

SeverityHigh

Fix difficultyProfessional

AreaLost communication with a control module

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.