PowertrainP0091

Serious

Severity: Serious - have it checked soon

Fuel Pressure Regulator 1 Control Circuit Low

34 brands affected · Generic SAE J2012 description.

Key terms: Oxygen sensor: measures oxygen in the exhaust gas · Mass air flow sensor: measures the air going into the engine · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions

Safety: This code relates to fuel pressure or a fuel leak, which carries a stall or fire risk.

1What it means in plain English

This code is in the fuel and air metering range, which includes fuel-pressure and camshaft-timing faults.

2Common causes

Dirty or faulty mass air flow sensor
Vacuum or intake air leak
Weak fuel pump or clogged fuel filter
Faulty fuel injector
Faulty oxygen sensor
Wiring or connector fault

3Can I drive?

Serious · drive with care

Do not drive if you smell fuel. Have the fuel system checked before driving further: a fuel leak or loss of pressure can cause a fire or make the engine stall.

This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.

4Brand data 34

Brand	Code	Description	System
Ashok Leyland CV	P0091	Partial Regenerations - Successfully Completed Brand	Powertrain
BAIC Motor	P0091	Fuel Pressure Regulator 1 Control Circuit Low Brand	Powertrain
BYD	P0091	Fuel Pressure Regulator 1 Control Circuit Low Brand	Powertrain
Chery	P0091	Fuel Pressure Regulator 1 Control Circuit Low Brand	Powertrain
Chrysler	P0091	Fuel Pressure Regulator 1 Control Circuit Low SAE	Powertrain
Daewoo	P0091	Fuel Pressure Regulator 1 Control Circuit Low Brand	Powertrain
DFFS	P0091	USB connection disabled Brand	Powertrain
DFFX	P0091	Fuel Pressure Regulator 1 Control Circuit Low Brand	Powertrain
DFXK	P0091	Fuel Pressure Regulator 1 Control Circuit Low Brand	Powertrain
EOBD	P0091	Bränsletrycksregulator 'A' styrkrets låg Brand	Powertrain
Ford	P0091	SCV control: P0092, P1250 Brand	Powertrain
Geely	P0091	Fuel Pressure Regulator 1 Control Circuit Low Brand	Powertrain
GM	P0091	Fuel Pressure Regulator 1 Control Circuit Low Brand	Powertrain
Great Wall	P0091	Fuel Pressure Regulator 1 Control Circuit Low Brand	Powertrain
Hafei	P0091	Fuel Pressure Regulator 1 Control Circuit Low Brand	Powertrain
Holden	P0091	Fuel Rail Low Pressure Brand	Powertrain
Honda	P0091	Fuel Pressure Regulator 1 Control Circuit Low SAE	Powertrain
Hyundai	P0091	Fuel Pressure Regulator 1 Control Circuit Low SAE	Powertrain
Isuzu	P0091	Fuel Pressure Regulator 1 Control Circuit Low SAE	Powertrain
Land Rover	P0091	Fuel Pressure Regulator 1 Control Circuit Low SAE	Powertrain
Maserati	P0091	Fuel pressure regulator 1 control circuit low Brand	Powertrain
Mazda	P0091	SCV control: P0092, P1250 Brand	Powertrain
Mitsubishi	P0091	Rail pressure valve circuit low Brand	Powertrain
Opel	P0091	Fuel Pressure Regulator 1 Control Circuit Low Brand	Powertrain
Peugeot	P0091	Fuel Pressure Regulator 1 Control Circuit Low SAE	Powertrain
Porsche	P0091	Fuel Pressure Regulator 1 Control Circuit Low SAE	Powertrain
Proton	P0091	Rail pressure valve circuit low Brand	Powertrain
Saab	P0091	Fuel Pressure Regulator 1 Control Circuit Low Brand	Powertrain
MG (SAIC)	P0091	Fuel Pressure Regulator 1 Control Circuit Low Brand	Powertrain
Subaru	P0091	Fuel Pressure Regulator 1 Control Circuit Low SAE	Powertrain
Suzuki	P0091	Fuel Pressure Regulator 1 Control Circuit Low Brand	Powertrain
Tata	P0091	Fuel Pressure Regulator 1 Control Circuit Low Brand	Powertrain
Toyota	P0091	USB connection disabled Brand	Powertrain
Volkswagen	P0091	Valve for fuel metering (N290): short to ground Brand	Powertrain

Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.

5Extended variant codes 4

These 7-character codes are manufacturer-specific variants of P0091 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P009100	Das Druckregelventil hat Kurzschluss nach Masse. Brand	Powertrain
Hyundai	P009100	Short to ground in control circuit of Fuel Pressure Regulator is detected, PCM sets Brand	Powertrain
Mercedes-Benz	P009111	Das Druckregelventil 1 für Kraftstoff hat Kurzschluss nach Masse. Es liegt ein Kurzschluss nach Masse vor. Brand	Powertrain
Sprinter	P009111	Das Druckregelventil 1 für Kraftstoff hat Kurzschluss nach Masse. Es liegt ein Kurzschluss nach Masse vor. Brand	Powertrain

6Related codes

Browse Pxxx codes or P009xx codes.