What does code P2593 mean?

Q: What does code P2593 mean?

Turbocharger Speed Sensor B Circuit. P2593 indicates that the powertrain control module (PCM) has detected an implausible or missing signal from the turbocharger speed sensor B circuit, which monitors the rotational speed of the turbocharger shaft. The PCM compares this signal with expected values from the engine operating conditions and sets the code when the signal is out of range, intermittent, or absent for a calibrated period.

DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P2593

P2593Turbocharger Speed Sensor B Circuit

P2593 indicates that the powertrain control module (PCM) has detected an implausible or missing signal from the turbocharger speed sensor B circuit, which monitors the rotational speed of the turbocharger shaft. The PCM compares this signal with expected values from the engine operating conditions and sets the code when the signal is out of range, intermittent, or absent for a calibrated period.

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.