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DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P2587

P2587Turbocharger Boost Control Position Sensor B Circuit Range/Performance

P2587 indicates that the powertrain control module (PCM) has detected an out-of-range or performance fault in the circuit for the turbocharger boost control position sensor B. This sensor reports the actual position of the variable geometry turbo (VGT) vanes or wastegate actuator, and the PCM compares that signal against expected values to verify proper boost control.

SystemPowertrain
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyIntermediate
AreaVehicle speed, idle control and auxiliary inputs

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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