Symptoms of a Bad or Failing Fuel Rail Pressure Sensor (FRPS)

Common symptoms of a bad or failing fuel rail pressure sensor (FRPS).
Check Engine Light On
Difficulty Starting the Engine
Reduced Performance
Poor Fuel Economy
Misfiring or Rough Running


What is a Fuel Rail Pressure Sensor (FRPS)?
The Fuel Rail Pressure Sensor monitors the fuel pressure which allows the ECM to change the speed the fuel pump. This allows the fuel pump to last much longer since it doesn't have to work constantly at full capacity.


Common FRPS OBDII Codes
P0190 P0191 P0192 P0193 P0194


Symptoms are similar to fuel pump failure or clogged fuel filter.




How to Test Fuel Rail Pressure Sensor
Check Wiring (Usually 3-wires sensor power, sensor signal, and ground. )
Check Fuel Pressure






www.backyardmechanic.org
By using this information user assumes all risk of use.
See About Page for Disclaimer.