What does code P28F3 mean?

Q: What does code P28F3 mean?

Engine Disconnect Clutch Pressure Sensor Circuit Low. P28F3 indicates that the powertrain control module (PCM) has detected a low voltage signal on the engine disconnect clutch pressure sensor circuit, which is used on hybrid vehicles to monitor the clutch that decouples the engine from the drivetrain. The PCM expects a voltage within a specific range that corresponds to clutch pressure, and a sustained low reading tells the module that the sensor circuit is shorted to ground, the sensor has failed, or the clutch pressure is genuinely too low.

DTC codes / P28xx · Transmission / P28F3

P28F3Engine Disconnect Clutch Pressure Sensor Circuit Low

P28F3 indicates that the powertrain control module (PCM) has detected a low voltage signal on the engine disconnect clutch pressure sensor circuit, which is used on hybrid vehicles to monitor the clutch that decouples the engine from the drivetrain. The PCM expects a voltage within a specific range that corresponds to clutch pressure, and a sustained low reading tells the module that the sensor circuit is shorted to ground, the sensor has failed, or the clutch pressure is genuinely too low.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaTransmission

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