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Home >> Jaguar >> 2022 >> XF S >> Repair and Diagnosis >> External Pages >> Different car >> Section 38 (Electronic Engine Controls - INGENIUM I4 2.0L Diesel -- XE (X760)) >> Electronic Engine Controls - INGENIUM I4 2.0L Diesel >> Description And Operation >> Description >> Crankcase Pressure Sensor - NAS Only

Crankcase Pressure Sensor - NAS Only

WARNING: This page is about a different car, the 2018 Jaguar XE and 2017 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
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The crankcase pressure sensor is located on the top of the vent module.

The sensor is a pressure sensor containing a piezo-resistive pressure element and amplification circuitry. The sensor has an operating pressure range of -10 kPa (-1.45 lbf/in2 ) to +10 kPa (+1.45 lbf/in2 ) and an operating temp range of -40 °C (-40 °F) to +145 °C (+293 °F).

The purpose of the crankcase pressure sensor is to detect when a crankcase vent pipe is disconnected. Under normal operating conditions the sensor should detect a negative pressure value. When a pipe is disconnected and opened to atmospheric pressure, then a reduced amount of negative pressure or positive pressure will be detected by the Powertrain Control Module (PCM), signaling an error state with the positive crankcase ventilation system.

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