What does code U04AE mean?

DTC codes / U04xx · Invalid data received from a module / U04AE

U04AEInvalid Data Received From Hybrid/EV Battery Interface Control Module N

U04AE is a communication fault where one or more control modules receive data from the hybrid or electric vehicle battery interface control module that fails the internal validity checks, meaning the values are present but implausible or corrupted. The module that sets this code has detected that the battery interface module is reporting data outside expected limits or with an invalid checksum, so it cannot trust the battery status information.

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.