What does code P2594 mean?

Q: What does code P2594 mean?

Turbocharger Speed Sensor B Circuit Range/Performance. P2594 indicates that the powertrain control module has detected an out-of-range or erratic signal from the turbocharger speed sensor B circuit, which monitors the rotational speed of the turbocharger shaft. The computer compares this signal against expected values and sets the code when the voltage or frequency falls outside the normal operating window for a calibrated period.

DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P2594

P2594Turbocharger Speed Sensor B Circuit Range/Performance

P2594 indicates that the powertrain control module has detected an out-of-range or erratic signal from the turbocharger speed sensor B circuit, which monitors the rotational speed of the turbocharger shaft. The computer compares this signal against expected values and sets the code when the voltage or frequency falls outside the normal operating window 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.