What does code U027A mean?

Q: What does code U027A mean?

Lost Communication With Battery Charger Control Module C. U027A is a generic network communication code indicating that one or more control modules on the vehicle's Controller Area Network (CAN) bus have lost contact with the Battery Charger Control Module C, which is a dedicated module responsible for managing high-voltage battery charging in electrified vehicles. The code is set when the module that monitors the bus fails to receive the expected periodic CAN messages from the charger control module within a defined timeout window.

DTC codes / U02xx · Lost communication with a control module / U027A

U027ALost Communication With Battery Charger Control Module C

U027A is a generic network communication code indicating that one or more control modules on the vehicle's Controller Area Network (CAN) bus have lost contact with the Battery Charger Control Module C, which is a dedicated module responsible for managing high-voltage battery charging in electrified vehicles. The code is set when the module that monitors the bus fails to receive the expected periodic CAN messages from the charger control module within a defined timeout window.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

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.