What does code P01FF mean?

Q: What does code P01FF mean?

Turbocharger Outlet Pressure Sensor A/B Correlation. P01FF is a generic powertrain code indicating that the engine control module (ECM) has detected a correlation fault between two turbocharger outlet pressure sensor signals, typically designated Sensor A and Sensor B. The ECM compares the readings from these sensors under specific operating conditions and sets the code when the difference exceeds a calibrated threshold for a set time, indicating that one sensor is reporting a pressure that does not agree with the other or with expected model values.

DTC codes / P01xx · Fuel and air metering / P01FF

P01FFTurbocharger Outlet Pressure Sensor A/B Correlation

P01FF is a generic powertrain code indicating that the engine control module (ECM) has detected a correlation fault between two turbocharger outlet pressure sensor signals, typically designated Sensor A and Sensor B. The ECM compares the readings from these sensors under specific operating conditions and sets the code when the difference exceeds a calibrated threshold for a set time, indicating that one sensor is reporting a pressure that does not agree with the other or with expected model values.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.