What does code U0253 mean?

Q: What does code U0253 mean?

Lost Communication With Accessory Protocol Interface Module. U0253 is a network communication code indicating that one or more control modules on the vehicle's Controller Area Network (CAN) bus have stopped receiving messages from the Accessory Protocol Interface Module (APIM). The APIM is the gateway module that handles infotainment, Bluetooth, USB, and other accessory functions, and when it goes silent, the modules that depend on it set this code.

DTC codes / U02xx · Lost communication with a control module / U0253

U0253Lost Communication With Accessory Protocol Interface Module

U0253 is a network communication code indicating that one or more control modules on the vehicle's Controller Area Network (CAN) bus have stopped receiving messages from the Accessory Protocol Interface Module (APIM). The APIM is the gateway module that handles infotainment, Bluetooth, USB, and other accessory functions, and when it goes silent, the modules that depend on it set this code.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

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.