P051F – Positive Crankcase Ventilation Filter Restriction

P051F Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P051F Possible Causes

Positive Crankcase Ventilation Filter Restriction,Faulty Crankcase Pressure Sensor,Crankcase Pressure Sensor harness is open or shorted,Crankcase Pressure Sensor circuit poor electrical connection

P051F Description

The Engine Control Module (ECM) monitors the Crankcase Pressure Sensor signal. The ECM sets the OBDII code when the Crankcase Pressure Sensor is not to factory specifications.