What does code U04A7 mean?

DTC codes / U04xx · Invalid data received from a module / U04A7

U04A7Invalid Data Received From Hybrid/EV Battery Interface Control Module G

U04A7 means the vehicle's main control module has stopped receiving valid data from the Hybrid/EV Battery Interface Control Module G, which is the electronic gateway that translates signals between the high-voltage battery pack and the rest of the car. The computer detected missing, corrupted, or implausible messages on the communication network rather than a direct battery failure, so the fault often lies in wiring, connectors, or the module's power supply before the module itself.

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.