What does code U02A7 mean?

Q: What does code U02A7 mean?

Lost Communication With Engine Sound Control 1. U02A7 is a generic network communication code indicating that one or more control modules have lost the CAN (Controller Area Network) signal from the Engine Sound Control 1 module, which is responsible for generating or shaping engine sound through the audio system. The computer has detected that expected periodic messages from this module are no longer arriving on the bus, so it flags the module as offline or unresponsive.

DTC codes / U02xx · Lost communication with a control module / U02A7

U02A7Lost Communication With Engine Sound Control 1

U02A7 is a generic network communication code indicating that one or more control modules have lost the CAN (Controller Area Network) signal from the Engine Sound Control 1 module, which is responsible for generating or shaping engine sound through the audio system. The computer has detected that expected periodic messages from this module are no longer arriving on the bus, so it flags the module as offline or unresponsive.

SystemNetwork

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

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.