Possible causes – Faulty fuel pressure regulator– Fuel pressure regulator harness is open or shorted– Fuel pressure regulator electrical circuit poor connection When is the code detected? Fuel Pressure Regulator (FRP) feedback current less than 400mA Symptoms – Engine Light
Possible causes – Faulty fuel pressure regulator– Fuel pressure regulator harness is open or shorted– Fuel pressure regulator electrical circuit poor connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
Possible causes – Faulty fuel pressure solenoid– Fuel pressure solenoid harness is open or shorted– Fuel pressure solenoid electrical circuit poor connection– Faulty Engine Control Module (ECM) When is the code detected? The Engine Control Module (ECM) has detected an
Possible causes – Faulty fuel pressure solenoid– Fuel pressure solenoid harness is open or shorted– Fuel pressure solenoid electrical circuit poor connection– Faulty Engine Control Module (ECM) When is the code detected? The Engine Control Module (ECM) has detected an
Possible causes – Faulty fuel pressure solenoid– Fuel pressure solenoid harness is open or shorted– Fuel pressure solenoid electrical circuit poor connection– Faulty Engine Control Module (ECM) When is the code detected? The Engine Control Module (ECM) has detected an
Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0091 Description Fuel Pressure Regulator 1 Control Circuit Low is the generic definition for the P0091; however your vehicle’s manufacturer may have a different definition and information for the