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Home >> Jaguar >> 2020 >> XF Checkered Flag >> 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 >> Fuel Rail Pressure Sensor

Fuel Rail Pressure Sensor

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 fuel rail pressure sensor is located in a threaded port in the forward end of the fuel rail.

The sensor measures the fuel pressure in the fuel rail which is supplied from the HP fuel pump.

The fuel rail pressure sensor is a piezo resistor type sensor. The sensor receives a 5 V reference voltage supplied through a resistor within the PCM and produces an analogue signal of between 0 and 5 V depending on the pressure sensed. Low pressure gives a low voltage output and consequently high pressure gives a higher voltage output. The PCM uses this pressure signal to monitor the fuel pressure in the fuel rail and adjust the HP fuel pump fuel metering valve to control the fuel pressure in the fuel rail.

The PCM monitors the fuel rail pressure sensor for faults and can store fault related DTC's. These can be retrieved using an approved diagnostic system.

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