The Fuel Rail Pressure Sensor (FRP Sensor) is an electronic component that monitors the fuel pressure inside the fuel rail and sends information to the Engine Control Module (ECM).
1. Main functions
Measures fuel pressure inside the fuel rail.
Sends pressure readings to the ECU/ECM.
Helps the ECU regulate fuel injection.
Supports proper engine performance and fuel delivery.
Helps detect abnormal fuel pressure.
2. Common symptoms of a faulty sensor
Difficulty starting the engine.
Engine stalling.
Loss of engine power.
Poor acceleration.
Rough idling.
Check Engine light.
Increased fuel consumption.