Crankcase Pressure Sensor: Description and Operation

OPERATION





The Crankcase Pressure (CP) Sensor (5) is mounted on the valve cover (4). The CP sensor monitors crankcase pressure that builds up as the result of combustion gas blow-by. The Engine Control Module (ECM) uses data from the CP sensor to determine the condition of the crankcase breather (ventilation) filter. The ECM can also determine if a crankcase breather (ventilation) filter is present.