What does code U02B7 mean?

Q: What does code U02B7 mean?

Lost Communication With Rear Radar Module B. U02B7 is a network communication code indicating that the primary control module has lost contact with the rear radar module B, which is typically one of the sensors used for blind spot monitoring or rear cross-traffic alert. The computer detected that expected controller area network (CAN) messages from that module stopped arriving within the required time window, so it flagged the module as offline.

DTC codes / U02xx · Lost communication with a control module / U02B7

U02B7Lost Communication With Rear Radar Module B

U02B7 is a network communication code indicating that the primary control module has lost contact with the rear radar module B, which is typically one of the sensors used for blind spot monitoring or rear cross-traffic alert. The computer detected that expected controller area network (CAN) messages from that module stopped arriving within the required time window, so it flagged the module as offline.

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.