What does code U02B6 mean?

Q: What does code U02B6 mean?

Lost Communication With Rear Radar Module A. U02B6 is a generic communication fault indicating that one or more control modules have lost contact with the rear radar module designated as 'A', which is typically used for blind spot monitoring or rear cross-traffic alert. The computer detected that the module stopped responding on the vehicle's communication network, often the Controller Area Network (CAN) bus, so other modules can no longer receive its data.

DTC codes / U02xx · Lost communication with a control module / U02B6

U02B6Lost Communication With Rear Radar Module A

U02B6 is a generic communication fault indicating that one or more control modules have lost contact with the rear radar module designated as 'A', which is typically used for blind spot monitoring or rear cross-traffic alert. The computer detected that the module stopped responding on the vehicle's communication network, often the Controller Area Network (CAN) bus, so other modules can no longer receive its data.

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.