Cummins Isx Fuel Rail Pressure Sensor

2013 peterbelt 386 isx 15 cummins.

Cummins isx fuel rail pressure sensor.

High pressure fuel pump inlet 11. Seized ceramic plunger compared to how it should look normally. High pressure relief valve and drain 18. The engine control module ecm has detected that fuel pressure is lower than commanded pressure.

Besides injector lines this rail also features a return line and pressure relief valve responsible for relieving excessive pressure and a rail pressure sensor that tells the ecm on board computer what pressure is at the rail which can be as high as 30 000 psi and as low as roughly 4 000 psi. Last time around 2000 miles ago this sign came i went to peterbilt dealer they changed the fuel filter and scr nox temp sensor. Fuel pressure sensor location 17. Then i run around 500 miles this sign came again when i try to climb at moutain.

Fault code 559 injector metering rail 1 pressure data valid but below normal operating range moderately severe level. Fuel rail pressure sign. High pressure fuel pump outlet 14. High pressure fuel pump 12.

Fuel pump actuator 13. High pressure fuel rail supply 15. Pressure side fuel filter 5 micron 10. Replacement restores engine performance.