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Crankcase Pressure Sensor

WARNING: This page is about a different car, the 2025 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

The Crankcase Pressure Sensor is used to diagnose a disconnect in the MUA Tube. The Crankcase Pressure Sensor connects to a fitting on the Clean Air Tube that is also connected to the MUA Tube. The Powertrain Control Module (PCM) monitors the pressure pulsations in the Crankcase Pressure Sensor signal to determine whether or not the hose is connected.

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