What does code U0168 mean?

Q: What does code U0168 mean?

Lost Communication With Vehicle Security Control Module. U0168 is a generic network communication code indicating that one or more control modules have lost contact with the vehicle security control module over the controller area network (CAN) bus. The detecting module, often the body control module or powertrain control module, has stopped receiving the periodic status messages that the security module normally broadcasts, so it flags the missing signal as a communication fault.

DTC codes / U01xx · Lost communication with a control module / U0168

U0168Lost Communication With Vehicle Security Control Module

U0168 is a generic network communication code indicating that one or more control modules have lost contact with the vehicle security control module over the controller area network (CAN) bus. The detecting module, often the body control module or powertrain control module, has stopped receiving the periodic status messages that the security module normally broadcasts, so it flags the missing signal as a communication fault.

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.