What does code U02B5 mean?

Q: What does code U02B5 mean?

Lost Communication With Front Radar Module B. U02B5 means the vehicle's main communication network has lost contact with the front radar module, which is the sensor behind adaptive cruise control and forward collision warning. The computer detected that the module stopped responding to periodic network messages, so it flagged the missing node rather than a radar performance fault.

DTC codes / U02xx · Lost communication with a control module / U02B5

U02B5Lost Communication With Front Radar Module B

U02B5 means the vehicle's main communication network has lost contact with the front radar module, which is the sensor behind adaptive cruise control and forward collision warning. The computer detected that the module stopped responding to periodic network messages, so it flagged the missing node rather than a radar performance fault.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

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.