Fuel Pressure Sensor.

• Your common rail Diesel Engines is fitted with a fuel pressure sensor.

In Indian cars the most common make is Bosch; followed by Delphi and Siemens and then Denso The fuel  pressure sensor signals the pressure in the fuel rail to the ECU . The rail contains a pressurised supply of diesel fuel ready for the injectors to use; when the pressure in the rail drops the sensor signals this to the ECU and pressure (via the pump) is restored. The ECU  controls the  supply of fuel  to the rail from the high pressure pump; it does this by means of a Fuel pressure control valve. If the fuel pressure sensor fails or becomes faulty run a diagnostic check on the vehicle. You will find the fault codes listed                                                        

Check The Fault Code Click Here 

DELPHI FPS

BOSCH FPS