PowertrainP0104

Caution

Severity: Caution - get it checked when you can

Mass or Volume Air Flow Circuit Intermittent

33 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 33

Brand	Code	Description	System
Ashok Leyland CV	P0104	Drive Motor / Actuator. 'B'. Inverter. Voltage Sensor. - Incorrect Or Intermittent Data Brand	Powertrain
BAIC Motor	P0104	Mass or Volume Air Flow A Circuit Intermittent Brand	Powertrain
Mercedes-Benz	P0104	Mass or Volume Air Flow Circuit Intermittent SAE	Powertrain
BMW	P0104	Mass or Volume Air Flow Circuit Intermittent Brand	Powertrain
BYD	P0104	Mass or Volume Air Flow A Circuit Intermittent Brand	Powertrain
Chery	P0104	Mass Air Flow Sensor (G70): Intermittent Brand	Powertrain
Daewoo	P0104	Mass or Volume Air Flow A Circuit Intermittent Brand	Powertrain
DFFS	P0104	Diesel heater failure Brand	Powertrain
DFFX	P0104	Mass or Volume Air Flow A Circuit Intermittent Brand	Powertrain
DFXK	P0104	Mass Air Flow Sensor (G70): Intermittent Brand	Powertrain
EOBD	P0104	Mass or volume air flow sensor 'A' circuit intermittent Brand	Powertrain
Ford	P0104	Mass or Volume Air Flow Circuit Intermittent SAE	Powertrain
Geely	P0104	Mass Air Flow Sensor (G70): Intermittent Brand	Powertrain
GM	P0104	Mass air flow circuit Brand	Powertrain
Great Wall	P0104	Mass or Volume Air Flow A Circuit Intermittent Brand	Powertrain
Hafei	P0104	Mass or Volume Air Flow A Circuit Intermittent Brand	Powertrain
Holden	P0104	Mass Air Flow (MAF) Sensor Circuit Erratic Brand	Powertrain
Honda	P0104	Mass or Volume Air Flow Circuit Intermittent SAE	Powertrain
Hyundai	P0104	Mass or Volume Air Flow Circuit Intermittent SAE	Powertrain
Isuzu	P0104	Mass or Volume Air Flow Circuit Intermittent SAE	Powertrain
Land Rover	P0104	The mass air flow signal was intermittent Brand	Powertrain
Mitsubishi	P0104	AFS intermittent Brand	Powertrain
Opel	P0104	Mass air flow circuit Brand	Powertrain
Peugeot	P0104	Mass or Volume Air Flow Circuit Intermittent SAE	Powertrain
Porsche	P0104	Mass or Volume Air Flow Circuit Intermittent SAE	Powertrain
Proton	P0104	AFS intermittent Brand	Powertrain
Saab	P0104	Mass Air Flow Circuit Brand	Powertrain
MG (SAIC)	P0104	Mass or Volume Air Flow A Circuit Intermittent Brand	Powertrain
Sprinter	P0104	Mass or Volume Air Flow Circuit Intermittent SAE	Powertrain
Suzuki	P0104	Mass or Volume Air Flow 'A' Circuit Intermittent Brand	Powertrain
Tata	P0104	Mass Or Volume Air Flow " Brand	Powertrain
Toyota	P0104	Diesel heater failure Brand	Powertrain
Volkswagen	P0104	Mass Air Flow (MAF) (G70): 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.

5Related codes

Browse Pxxx codes or P010xx codes.