P119A INFINITI Possible Causes
- Faulty fuel rail pressure sensor
- Fuel rail pressure sensor harness is open or shorted
- Poor electrical connection in the fuel rail pressure sensor circuit
How to Fix P119A INFINITI Code?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Engine light on (or engine service warning light soon)
P119A INFINITI Meaning
The fuel rail pressure (FRP) sensor is located on the fuel rail and measures the fuel pressure in the fuel rail. The sensor sends a voltage signal to the engine control module (ECM). When pressure increases, voltage increases. The ECM controls the fuel pressure in the fuel rail by operating the high-pressure fuel pump. The ECM uses the signal from the fuel rail pressure sensor as a feedback signal.
The engine control module (ECM) monitors the fuel rail pressure sensor. The ECM sets the OBDII code when the fuel rail pressure sensor does not meet factory specifications.