P0090 Fuel Pressure Regulator Control Circuit

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)

What about the obd code?

If the current is outside of the expected range, DTC P0090 will set.

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P0090 Description

The Engine Control Module (ECM) supplies power and ground to the Fuel Rail Pressure (FRP) regulator. The ECM monitors current on the circuits to detect a failure.