What is the function and testing procedure of the Coolant Temperature Sensors, Mass Air Flow Sensor, Oxygen Sensor and Throttle Position Sensor on Audi 80?

The Multipoint injection system (MPI) has a fault memory which includes the fuel injection system and ignition system with a self-check procedure. In order to test the probe of the lambda, dislodge the wiring plug in its immediate vicinity to the inlet manifold and then attach a voltmeter to the probe's terminals, and start the engine to ensure that there is a voltage of 12VOLTS; otherwise, examine the circuit. In removing the lambda probe of the exhaust manifold, make sure that its threads have been covered with suitable paste without touching the slots of the probe. The MPI control unit has a step-by-step test model with the fuel pump relay, separate injectors, idle stabilizing valve, and activated charcoal filter valve, which must have a special fault read-out unit; though one can hear or feel the operation of the parts when the engine is off. In models until 1988, in which the coolant temperature exceeds 20°C (68°F), the wiring plug should be pulled off and an ohmmeter used to measure the contact-to-contact resistance and the result should be about 2400 ohms. To test throttle valve potentiometer, disconnect its wiring plug and with ignition on check voltages between terminals, voltages should be correct; check wiring or potentiometer. At full throttle, the resistance checks on the potentiometer should be within given ranges. In case of throttle valve switch, unscrew the wiring plug and align it to open at a desired feeler blade thickness and screw the screws. The idling switch has a check of resistance that is done with a feeler blade inserted and the resistance of the switch is expected to be infinity and this is checked on an idling switch and should be infinity resistance that should be checked zero and infinity. In the case of air volume sensor, remove the wiring plug and measure voltages at different contacts when the ignition is on, in between the contacts and compare them with the expectancies. In models with coolant temperature senders since 1989, after the engine has cooled, measure the resistance with identified wiring plug disconnected and verify at 20°C (68°F) approximately 2500 ohms and at 80°C (176°F) approximately 330 ohms.

How is the MAP Sensor and Mass Air Flow Sensor removed from the air filter housing on Audi A4?

The MAFIIAT sensor is utilized on all models except for the 3.2L V6 variants. Begin by removing the ambient air inlet duct. Next, loosen the hose clamp and disconnect the air intake duct from the MAF/IAT sensor. Then, disconnect the electrical connector from the MAF/IAT sensor. Finally, remove the mounting fasteners for the MAF/IAT sensor and take the sensor out of the air filter housing.

Genuine Audi Mass Air Flow Sensor

MAF Sensor Meter

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45 Mass Air Flow Sensors found

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Audi Air Cleaner Assembly Bracket Part Number: 8K0-133-426-A
$15.49 MSRP: $24.78
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Product Specifications
- Other Name: Adapter
- Replaces: 8K0-133-426
Fits the following Audi Models:
- A4 | 2009-2016 | Base, Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- A4 Quattro | 2009-2016 | Avant, Base, Premium, Premium Plus, Prestige | 4 Cyl 2.0 L FLEX, 4 Cyl 2.0 L GAS, 6 Cyl 3.2 L GAS
- A5 | 2010-2014 | Cabriolet | 4 Cyl 2.0 L GAS
- A5 Quattro | 2008-2017 | Base, Cabriolet, Premium, Premium Plus, Prestige, Sport | 4 Cyl 2.0 L FLEX, 4 Cyl 2.0 L GAS, 6 Cyl 3.2 L GAS
- RS5 | 2013-2015 | Base, Cabriolet | 8 Cyl 4.2 L GAS
- S4 | 2010-2016 | Base, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
- S5 | 2008-2017 | Base, Cabriolet, Premium Plus, Prestige | 6 Cyl 3.0 L GAS, 8 Cyl 4.2 L GAS
- allroad | 2013-2016 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L FLEX
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Audi Air Mass Sensor Part Number: 06J-129-638
$17.99 MSRP: $28.78
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Product Specifications
- Other Name: Adapter
Fits the following Audi Models:
- TT Quattro | 2011-2015 | Base, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
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Audi Air Intake Temperature Sensor Part Number: 06K-906-051-E
$22.94 MSRP: $36.70
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Product Specifications
- Other Name: Presssens
- Position: Left
Fits the following Audi Models:
- A4 | 2020 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- A4 Quattro | 2020-2023 | Premium, Premium Plus, Prestige, Ultra sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- A4 allroad | 2021-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- A5 Quattro | 2021-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- A5 Sportback | 2021-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- A6 Quattro | 2022-2023 | Premium, Premium Plus | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- Q5 | 2021-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- Q5 Sportback | 2021-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- Q7 | 2023 | Premium, Premium Plus | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
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Audi Mass Air Flow Sensor Part Number: 03G-906-461-C
$145.17 MSRP: $203.32
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Product Specifications
- Other Name: Air Meter; Air Mass Sensor
Fits the following Audi Models:
- A3 | 2010-2013 | TDI | 4 Cyl 2.0 L DIESEL
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Audi Mass Air Flow Sensor Part Number: 03L-906-461-A
$180.87 MSRP: $253.32
You Save: $72.45 (29%)
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Product Specifications
- Other Name: Air Meter; Air Mass Sensor
Fits the following Audi Models:
- A3 | 2015-2016 | TDI Premium, TDI Premium Plus, TDI Prestige | 4 Cyl 2.0 L DIESEL
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Audi Mass Air Flow Sensor Part Number: 078-133-471-E
$185.64 MSRP: $260.00
You Save: $74.36 (29%)
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Product Specifications
- Other Name: Air Meter; Air Mass Sensor
Fits the following Audi Models:
- A4 | 2000-2001 | Base | 6 Cyl 2.8 L GAS
- A4 Quattro | 2000-2001 | Avant, Base | 6 Cyl 2.8 L GAS
- A6 | 2000-2001 | Base | 6 Cyl 2.8 L GAS
- A6 Quattro | 2000-2001 | Avant, Base | 6 Cyl 2.8 L GAS
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Audi Mass Air Flow Sensor Part Number: 078-133-471-C
$191.59 MSRP: $268.33
You Save: $76.74 (29%)
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Product Specifications
- Other Name: Air Meter; Mass Air Flow Sensor
Fits the following Audi Models:
- A4 | 1998-1999 | Avant, Base | 6 Cyl 2.8 L GAS
- A4 Quattro | 1998-1999 | Avant, Base | 6 Cyl 2.8 L GAS
- A6 | 1998-2001 | Base | 6 Cyl 2.8 L GAS
- A6 Quattro | 1998-2001 | Avant, Base | 6 Cyl 2.8 L GAS
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Audi Mass Air Flow Sensor Part Number: 077-133-471-D
$194.92 MSRP: $273.00
You Save: $78.08 (29%)
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Product Specifications
- Other Name: Air Meter; Air Mass Sensor
Fits the following Audi Models:
- A8 | 1997-1999 | Base | 8 Cyl 3.7 L GAS
- A8 Quattro | 1997-1999 | Base | 8 Cyl 4.2 L GAS
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Audi Mass Air Flow Sensor Part Number: 04L-906-461-B
$249.89 MSRP: $349.98
You Save: $100.09 (29%)
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Product Specifications
- Other Name: Air Meter; Air Mass Sensor, Mass Air Flow Sensor
Fits the following Audi Models:
- A3 | 2017-2020 | Premium, Premium Plus, Prestige, Titanium | 4 Cyl 2.0 L GAS
- A3 Quattro | 2017-2020 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- A4 | 2017-2020 | Premium, Premium Plus, Prestige, Titanium | 4 Cyl 2.0 L GAS
- Q3 | 2021-2024 | Premium, Premium Plus | 4 Cyl 2.0 L GAS
- S3 | 2017-2020 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
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Audi Mass Air Flow Sensor Part Number: 06A-906-461-DX
$163.95 MSRP: $228.00
You Save: $64.05 (29%)
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Product Specifications
- Other Name: Air Meter
- Replaces: 06A-906-461-D
Fits the following Audi Models:
- A4 | 2000 | Base | 4 Cyl 1.8 L GAS
- A4 Quattro | 2000 | Avant, Base | 4 Cyl 1.8 L GAS
- TT | 2000 | Base | 4 Cyl 1.8 L GAS
- TT Quattro | 2000 | Base | 4 Cyl 1.8 L GAS
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Audi Mass Air Flow Sensor Part Number: 06A-906-461-LX
$219.08 MSRP: $306.83
You Save: $87.75 (29%)
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Product Specifications
- Other Name: Air Meter; Air Mass Sensor
Fits the following Audi Models:
- A4 | 2001-2006 | Base, Cabriolet | 4 Cyl 1.8 L GAS
- A4 Quattro | 2001-2005 | Avant, Base | 4 Cyl 1.8 L GAS
- TT | 2000-2006 | Base | 4 Cyl 1.8 L GAS
- TT Quattro | 2000-2006 | ALMS Edition, Base | 4 Cyl 1.8 L GAS
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Audi Mass Air Flow Sensor Part Number: 077-133-471-GX
$168.95 MSRP: $235.00
You Save: $66.05 (29%)
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Product Specifications
- Other Name: Air Meter; Air Mass Sensor
- Replaces: 077-133-471-G
Fits the following Audi Models:
- A6 Quattro | 2000-2002 | Base | 8 Cyl 4.2 L GAS
- A8 Quattro | 2000-2002 | Base, L | 8 Cyl 4.2 L GAS
- S6 | 2002 | Avant | 8 Cyl 4.2 L GAS
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Audi Mass Air Flow Sensor Part Number: 057-906-461-J
$271.90 MSRP: $380.82
You Save: $108.92 (29%)
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Product Specifications
- Other Name: Sensor; Mass Air Flow Sensor
Fits the following Audi Models:
- A8 Quattro | 2012-2016 | L W12 | 12 Cyl 6.3 L GAS
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Audi Mass Air Flow Sensor Part Number: 06D-906-461
$200.55 MSRP: $280.89
You Save: $80.34 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Air Meter; Mass Air Flow Sensor
Fits the following Audi Models:
- A4 | 2005-2009 | Base, Cabriolet | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
- A4 Quattro | 2005-2009 | Avant, Base, Cabriolet | 4 Cyl 2.0 L GAS
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Audi Mass Air Flow Sensor Part Number: 059-906-461-N
$291.54 MSRP: $408.32
You Save: $116.78 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Air Meter; Air Mass Sensor
Fits the following Audi Models:
- A6 Quattro | 2014-2016 | TDI Premium Plus, TDI Prestige | 6 Cyl 3.0 L DIESEL
- A7 Quattro | 2014-2016 | TDI Premium Plus, TDI Prestige | 6 Cyl 3.0 L DIESEL
- Q5 | 2014-2016 | TDI Premium Plus, TDI Prestige | 6 Cyl 3.0 L DIESEL
- Q7 | 2009-2015 | TDI, TDI Premium, TDI Premium Plus, TDI Prestige | 6 Cyl 3.0 L DIESEL
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Audi Mass Air Flow Sensor Part Number: 06A-906-461-EX
$192.75 MSRP: $268.33
You Save: $75.58 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Air Meter; Air Mass Sensor
- Replaces: 06A-906-461-E
Fits the following Audi Models:
- TT | 2001-2002 | Base | 4 Cyl 1.8 L GAS
- TT Quattro | 2001-2002 | ALMS Edition, Base | 4 Cyl 1.8 L GAS
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Audi Mass Air Flow Sensor Part Number: 06A-906-461-G
$339.14 MSRP: $474.98
You Save: $135.84 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Air Meter; Air Mass Sensor
- Replaces: 06A-906-461-GX
Fits the following Audi Models:
- Q7 | 2007-2010 | Base, Premium, Prestige | 8 Cyl 4.2 L GAS
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Audi Mass Air Flow Sensor Part Number: 078-906-461-BX
$196.32 MSRP: $273.33
You Save: $77.01 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Air Meter; Mass Air Flow Sensor
- Replaces: 078-906-461-B
Fits the following Audi Models:
- A4 | 2000 | Base | 6 Cyl 2.8 L GAS
- A4 Quattro | 2000 | Avant, Base | 6 Cyl 2.8 L GAS
- A6 Quattro | 2000 | Base | 6 Cyl 2.7 L GAS
- S4 | 2000 | Base | 6 Cyl 2.7 L GAS
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Audi Mass Air Flow Sensor Part Number: 077-133-471-M
$252.28 MSRP: $353.33
You Save: $101.05 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor; Air Mass Sensor
Fits the following Audi Models:
- RS4 | 2007-2008 | Base, Cabriolet | 8 Cyl 4.2 L GAS
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Audi Mass Air Flow Sensor Part Number: 07D-906-461
Product Specifications
- Other Name: Air Meter; Air Mass Sensor
- Replaces: 07D-906-461-X
Fits the following Audi Models:
- A3 Quattro | 2006-2009 | Base | 4 Cyl 2.0 L GAS, 6 Cyl 3.2 L GAS
- TT Quattro | 2008-2009, 2004-2006 | Base, Special Edition | 6 Cyl 3.2 L GAS

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Audi Mass Air Flow Sensor

Audi Mass Air Flow Sensor provides the exact measurement of incoming air so the engine computer can balance fuel for strong performance and clean emissions, which is critical to every powertrain. Audi stands out for its rich racing heritage, quattro all-wheel drive that grips confidently on slick roads, sleek sedans and SUVs that mix luxury with punchy acceleration, and cutting-edge features like Virtual Cockpit screens, matrix headlights and expanding e-tron electric options that show the brand never stops innovating. Audi started in 1909 and has grown with Auto Union, now pushing technology forward with self-driving tests, proving that Audi values progress no less than style and comfort. The Mass Air Flow Sensor is located in the intake duct and reads the real-time air mass through temperature and altitude changes, then sends the data instantly to the control module for crisp throttle response. Early vane style units made use of a spring-loaded flap, but hot wire and hot film versions that are both more efficient and react more quickly are also available and remain in place longer, all while fitting into any Audi engine layout with ease. A clean Mass Air Flow Sensor keeps rich or lean mixtures away, emission levels low and the sporty feel drivers expect. Regular checks of this Mass Air Flow Sensor help every Audi maintain peak efficiency, smooth idling and the spirited drive that defines the brand.

Stick with genuine OEM Mass Air Flow Sensor when you need quality that holds up. Audi crafts these parts to hit strict factory specs for every single unit. They also run each part through rigorous checks during production to maintain high quality. You can find exact Audi Mass Air Flow Sensor you need in our huge stock at AudiPartsGiant.com. You'll love our low, economical prices too. Every OEM part carries a real manufacturer's warranty, so you can buy with confidence. Returns aren't a headache here because our policy is simple. Plus, our speedy delivery gets orders out fast. Shop today and buy with total peace of mind.

Audi Mass Air Flow Sensor Parts and Q&A

Mass Air Flow Sensor
054-133-471-A
Q: What is the function and testing procedure of the Coolant Temperature Sensors, Mass Air Flow Sensor, Oxygen Sensor and Throttle Position Sensor on Audi 80?
A:
The Multipoint injection system (MPI) has a fault memory which includes the fuel injection system and ignition system with a self-check procedure. In order to test the probe of the lambda, dislodge the wiring plug in its immediate vicinity to the inlet manifold and then attach a voltmeter to the probe's terminals, and start the engine to ensure that there is a voltage of 12VOLTS; otherwise, examine the circuit. In removing the lambda probe of the exhaust manifold, make sure that its threads have been covered with suitable paste without touching the slots of the probe. The MPI control unit has a step-by-step test model with the fuel pump relay, separate injectors, idle stabilizing valve, and activated charcoal filter valve, which must have a special fault read-out unit; though one can hear or feel the operation of the parts when the engine is off. In models until 1988, in which the coolant temperature exceeds 20°C (68°F), the wiring plug should be pulled off and an ohmmeter used to measure the contact-to-contact resistance and the result should be about 2400 ohms. To test throttle valve potentiometer, disconnect its wiring plug and with ignition on check voltages between terminals, voltages should be correct; check wiring or potentiometer. At full throttle, the resistance checks on the potentiometer should be within given ranges. In case of throttle valve switch, unscrew the wiring plug and align it to open at a desired feeler blade thickness and screw the screws. The idling switch has a check of resistance that is done with a feeler blade inserted and the resistance of the switch is expected to be infinity and this is checked on an idling switch and should be infinity resistance that should be checked zero and infinity. In the case of air volume sensor, remove the wiring plug and measure voltages at different contacts when the ignition is on, in between the contacts and compare them with the expectancies. In models with coolant temperature senders since 1989, after the engine has cooled, measure the resistance with identified wiring plug disconnected and verify at 20°C (68°F) approximately 2500 ohms and at 80°C (176°F) approximately 330 ohms.
Mass Air Flow Sensor
06A-906-461-LX
Q: How is the MAP Sensor and Mass Air Flow Sensor removed from the air filter housing on Audi A4?
A:
The MAFIIAT sensor is utilized on all models except for the 3.2L V6 variants. Begin by removing the ambient air inlet duct. Next, loosen the hose clamp and disconnect the air intake duct from the MAF/IAT sensor. Then, disconnect the electrical connector from the MAF/IAT sensor. Finally, remove the mounting fasteners for the MAF/IAT sensor and take the sensor out of the air filter housing.