What does code P2588 mean?

Q: What does code P2588 mean?

Turbocharger Boost Control Position Sensor B Circuit Low. P2588 means the engine computer has detected a low-voltage signal from the turbocharger boost control position sensor B circuit, which typically monitors the position of the variable vane or wastegate actuator. The computer expects a voltage within a calibrated range and sees the circuit pulled below the minimum threshold, so it flags the sensor circuit as faulty.

DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P2588

P2588Turbocharger Boost Control Position Sensor B Circuit Low

P2588 means the engine computer has detected a low-voltage signal from the turbocharger boost control position sensor B circuit, which typically monitors the position of the variable vane or wastegate actuator. The computer expects a voltage within a calibrated range and sees the circuit pulled below the minimum threshold, so it flags the sensor circuit as faulty.

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.