What does code U0243 mean?

Q: What does code U0243 mean?

Lost Communication With Parking Assist Control Module B. U0243 means the vehicle's main communication network has lost contact with the parking assist control module, which is the computer that runs the ultrasonic sensors and reverse warning system. The module that monitors the network, typically the body control module, has stopped receiving the periodic status messages it expects from that parking assist module.

DTC codes / U02xx · Lost communication with a control module / U0243

U0243Lost Communication With Parking Assist Control Module B

U0243 means the vehicle's main communication network has lost contact with the parking assist control module, which is the computer that runs the ultrasonic sensors and reverse warning system. The module that monitors the network, typically the body control module, has stopped receiving the periodic status messages it expects from that parking assist module.

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.