P0090 Code: Meaning, Causes, and Symptoms | OBD2 Codes

P0090 – Fuel Pressure Regulator 1 Control Circuit


P0090 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


P0090 Possible Causes


Faulty fuel pressure sensor,Fuel pressure sensor harness is open or shorted,Fuel pressure sensor electrical circuit poor connection,Faulty Engine Control Module (ECM)


P0090 Description


The Engine Control Module (ECM) uses commanded fuel pump flow to determine a desired fuel rail pressure. The actual fuel pressure is monitored using the Fuel Rail Pressure (FRP) Sensor.