What does code U04BE mean?

Q: What does code U04BE mean?

Invalid Data Received From Battery Charger Control Module B. U04BE is a network communication fault indicating that one or more control modules received invalid or corrupted data from the battery charger control module, which is the module responsible for managing charging of the auxiliary battery in electric and hybrid vehicles. The computer detected a message from this module that failed its internal validity checks, such as a checksum error, out-of-range value, or missing expected data, rather than a complete loss of communication.

DTC codes / U04xx · Invalid data received from a module / U04BE

U04BEInvalid Data Received From Battery Charger Control Module B

U04BE is a network communication fault indicating that one or more control modules received invalid or corrupted data from the battery charger control module, which is the module responsible for managing charging of the auxiliary battery in electric and hybrid vehicles. The computer detected a message from this module that failed its internal validity checks, such as a checksum error, out-of-range value, or missing expected data, rather than a complete loss of communication.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaInvalid data received from a 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.