P0091 Code - Fuel Pressure Regulator 1 Control Circuit Low

What Does P0091 Mean?

OBD-II Code Decreased engine performance is defined as a Fuel Pressure Regulator 1 Control Circuit Low
Diesel engines operate off of high fuel pressure. The engine computer (PCM) uses a Fuel Pressure Regulator to control the fuel on the low pressure side (from the fuel tank) to the high pressure injection pump (pressurizes the fuel to the injectors). If the PCM cannot control the fuel pressure regulator, code P0091 will set.

engine code P0091	P0091 fix	obd P0091	dtc P0091
obd code P0091	obd2 P0091	P0091 car code	diagnostic code P0091
car code P0091	check engine code P0091	fehlercode P0091	P0091 fiat
codigo P0091	codigo falla P0091	P0091 kody błędów	codigo de falla P0091

What are the common causes of P0091 ?

• Faulty fuel pump
• Faulty fuel pump relay
• Faulty PCM
• Faulty electric fuel pressure regulator
• Restriction in the fuel filter or other parts of the fuel system
• Damaged wiring such as a short to ground
• Fuel tank low on fuel

How do you troubleshoot P0091 ?

Deactivation of cylinders is achieved by releasing a synchroniser pin that normally interlocks the cam follower and rocker arms. P0091 code resolves the synchroniser pin is released using hydraulic pressure which is controlled by a dedicated solenoid.



Searches related to P0091 - Fuel Pressure Regulator 1 Control Circuit Low

• p0091 ford fiesta
• p0091 duramax
• p0091 volvo
• p0091 fuel metering solenoid short to ground
• p0091 isuzu
• p0091 isuzu dmax
• p0091 hyundai
• code p0091