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DTC codes / U02xx · Lost communication with a control module / U02B0

U02B0Lost Communication With Turbocharger/Supercharger Boost Control B Position Sensor

U02B0 is a communication fault where the powertrain control module (PCM) has lost the controller area network (CAN) signal from the turbocharger or supercharger boost control 'B' position sensor. The PCM expects regular status messages from that sensor over the network, and when those messages stop arriving for a calibrated time, it stores this code and may default the boost control strategy.

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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