What does code U023B mean?

Q: What does code U023B mean?

Lost Communication With Image Processing Module B. U023B means the vehicle's network lost communication with the image processing module B, a camera-based control unit that feeds driver-assist and visibility features. The computer detected that expected controller-area network (CAN) messages from this module stopped arriving within the allowed time window.

DTC codes / U02xx · Lost communication with a control module / U023B

U023BLost Communication With Image Processing Module B

U023B means the vehicle's network lost communication with the image processing module B, a camera-based control unit that feeds driver-assist and visibility features. The computer detected that expected controller-area network (CAN) messages from this module stopped arriving within the allowed time window.

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.