What does code P2597 mean?

Q: What does code P2597 mean?

Turbocharger Speed Sensor B Circuit Intermittent. P2597 indicates that the powertrain control module (PCM) has detected an intermittent fault in the signal circuit for turbocharger speed sensor B, which monitors the rotational speed of the turbocharger shaft. The PCM sets this code when the sensor signal drops out or becomes erratic for a brief period, often due to a loose connection or wiring issue rather than a failed sensor.

DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P2597

P2597Turbocharger Speed Sensor B Circuit Intermittent

P2597 indicates that the powertrain control module (PCM) has detected an intermittent fault in the signal circuit for turbocharger speed sensor B, which monitors the rotational speed of the turbocharger shaft. The PCM sets this code when the sensor signal drops out or becomes erratic for a brief period, often due to a loose connection or wiring issue rather than a failed sensor.

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.