Fuel Rail Pressure And Temperature (FRPT) Sensor
WARNING: This page is about a different car, the 2020 Jaguar XF and 2019 Jaguar XF. However, it is still accessible from the selected car via links, so may be relevant.
The Fuel Rail Pressure and Temperature (FRPT) sensor provides the Engine Control Module (ECM) with a continuous signal of fuel rail pressure via hardwired connection. The FRPT sensor is installed in the rear of the Bank 1 fuel rail. The FRPT sensor is screwed into a threaded boss in the fuel rail.
The FRPT sensor contains a steel diaphragm fitted with strain gages, which are incorporated into a Wheatstone bridge. The output from the Wheatstone bridge is processed by the ECM to determine a pressure value. The FRPT sensor contains an Negative Temperature Coefficient (NTC) sensor which allows the ECM to determine the fuel temperature.