Crankcase Pressure Sensor
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
The crankcase pressure sensor measures the vacuum in the PCV system. A change in the PCV system vacuum greater than a calibrated threshold indicates the PCV system is disconnected and will set a DTC. The crankcase pressure sensor is located in the PCV system hose between the intake air system air cleaner and the engine crankcase PCV inlet.
The crankcase pressure sensor has one digital signal output from the sensor. There is one reference voltage circuit and one signal return circuit for the sensor.