PowertrainP0109

Caution

Severity: Caution - get it checked when you can

Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent

31 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

1What it means in plain English

This code is in the fuel, air and oxygen sensor range, which also includes coolant temperature 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?

Caution · drive with care

Have it diagnosed if the engine runs badly or the code keeps returning. Because this range includes coolant temperature sensors, watch the temperature gauge: if it climbs into the red, or the engine overheats or stalls, stop safely and get professional help.

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 31

Brand	Code	Description	System
Ashok Leyland CV	P0109	Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent SAE	Powertrain
BAIC Motor	P0109	Intake air pressure sensor signal error Brand	Powertrain
BMW	P0109	Manifold Abs.Pressure/Bar.Pressure Circuit Intermittent Brand	Powertrain
BYD	P0109	Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent Brand	Powertrain
Chery	P0109	Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent Brand	Powertrain
Daewoo	P0109	Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent Brand	Powertrain
DFFS	P0109	Intake air pressure signal failure Brand	Powertrain
DFFX	P0109	Intake pressure sensor signal error Brand	Powertrain
DFXK	P0109	Intake air pressure sensor signal error Brand	Powertrain
EOBD	P0109	Grenrörs absoluttryck/barometertryckssensor krets intermittent Brand	Powertrain
Ford	P0109	Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent SAE	Powertrain
Geely	P0109	Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent Brand	Powertrain
GM	P0109	Manifold absolute pressure circuit intermittent Brand	Powertrain
Great Wall	P0109	Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent Brand	Powertrain
Hafei	P0109	Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent Brand	Powertrain
Holden	P0109	Manifold Absolute Pressure (MAP) Sensor Circuit Erratic Brand	Powertrain
Honda	P0109	Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent SAE	Powertrain
Hyundai	P0109	Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent SAE	Powertrain
Isuzu	P0109	Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent SAE	Powertrain
Land Rover	P0109	The barometric pressure signal was intermittent Brand	Powertrain
Mazda	P0109	Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent SAE	Powertrain
Mitsubishi	P0109	BARO./MAP sensor range Brand	Powertrain
Opel	P0109	Manifold absolute pressure circuit intermittent Brand	Powertrain
Peugeot	P0109	Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent SAE	Powertrain
Porsche	P0109	Saugrohrdrucksensor Brand	Powertrain
Proton	P0109	BARO./MAP sensor range Brand	Powertrain
Saab	P0109	Krümmer Absolutdruck Stromkreis zeitweilig Brand	Powertrain
MG (SAIC)	P0109	Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent Brand	Powertrain
Tata	P0109	Atmospheric Pressure Sensor Fault - GRAD Brand	Powertrain
Toyota	P0109	Intake air pressure sensor signal error Brand	Powertrain
Volkswagen	P0109	Manifold Barometric Pressure Sensor (G71) (F96): Intermittent 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 1

These 7-character codes are manufacturer-specific variants of P0109 and may be reported by some scan tools.

Brand	Code	Description	System
SsangYong	P010900	Low booster pressure sensor signal Brand	Powertrain

6Related codes

Browse Pxxx codes or P010xx codes.