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DTC codes / U02xx · Lost communication with a control module / U0233

U0233Lost Communication With Side Obstacle Detection Control Module Right

U0233 is a network communication code indicating that the main control module has lost the CAN (Controller Area Network) data stream from the right-side blind spot monitoring module. The computer detects this when it stops receiving the periodic status messages that the right side obstacle detection module is programmed to broadcast.

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.

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