Diesel CR PRESSURE SENSORS Fuel high pressure sensor The fuel rail sensor, commonly referred to as the fuel pressure sensor, it is installed at one end of the oil rail to measure the fuel pressure in the common rail pipe. The fuel pressure sensor 0281002942 system and designed to monitor the fuel pressure that is present at the fuel rail. The sensor sends this signal to the ECU, which then uses it to make adjustments to the vehicle’s fuel and timing. The fuel rail sensor, commonly referred to as the fuel pressure sensor, it is installed at one end of the oil rail to measure the fuel pressure in the common rail pipe.