If the injectors are not closing and flooding the engine, it may be the PCM as that is what controls the injector commands.
If you remove the wires from the injectors, does it still spray fuel into the cylinders?
If it does, the injectors are bad.
If it does not then the PCM may be the failure.
The code for the sensor may mean it sees lower pressure from the excessive fuel flow.
Fuel Rail Pressure Sensor Circuit Performance (Frp)
Circuit Resistance Excessive
Fuel Rail Pressure (FRP) Sensor Damaged
High Fuel Pressure
Low Fuel Pressure
Low or No Fuel
Friday, November 23rd, 2018 AT 8:11 PM