Fuel Rail Pressure And Temperature Sensor
WARNING: This page is about a different car, the 2020 Land Rover Range Rover Velar. 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 Powertrain Control Module (PCM) with a continuous signal of fuel rail pressure and temperature. 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 installed with strain gages, which are incorporated into a Wheatstone bridge. The output from the Wheatstone bridge is processed by the PCM to determine a pressure value. The FRPT sensor contains a Negative Temperature Coefficient (NTC) resistor which allows the PCM to determine the fuel temperature.