What does code U04A2 mean?

DTC codes / U04xx · Invalid data received from a module / U04A2

U04A2Invalid Data Received From Hybrid/EV Battery Interface Control Module B

U04A2 is a communication fault where one control module on the vehicle's network reports that it has received invalid or corrupted data from the Hybrid/EV Battery Interface Control Module B. The module that set the code is not necessarily the battery interface module itself; it is a module that depends on clean data from that battery interface and flagged the data as unusable.

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.