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)
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.