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DTC codes / U02xx · Lost communication with a control module / U02AD

U02ADLost Communication With Turbocharger/Supercharger Boost Control B

U02AD is a network communication code indicating that one or more control modules have lost the CAN (Controller Area Network) signal from the turbocharger or supercharger boost control module B. The computer has detected that expected periodic messages from this module are missing, not that the boost control itself has failed.

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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