What are the features and testing procedures for the Mass Air Flow Sensor on Volvo 740?

The sensor inside the air mass meter has a wire that is kept at 250degF (120degC) above the ambient air temperature of incoming air. As the air mass increases, more current is required to maintain the correct wire temperature and this current is used to calculate the air mass intake. When the engine is shut off, any dirt on the wire gets burned off electrically by heating the element to 1832degF (1000degC) for 1 second; any tiny bit of dirt left could cause wrong signals to be sent to the control unit, resulting in a wrong air/fuel mixture. To test the MAF sensor, it is necessary to disconnect the connector, then by wiring diagrams find the signal ground wire and measure the resistance with a DVOM, it should be 0 ohms. Next, locate the signal circuit and measure the voltage between it and ground with ignition in ON position, it should be equal to battery voltage. After plugging the MAF sensor connector back in, backprobe the signal return and signal ground with the key in the ON position, expecting a voltage of 0.1 - 0.2v. If the voltage is okay, make sure all the connections are tight or change the MAF sensor. To remove it, disconnect the negative battery cable, unplug the sensor connector and remove the two retaining screws to remove the sensor. To install, fit the sensor into the air inlet hose, tighten the retaining screws on the sensor, plug in the connector and reconnect the negative battery cable.

Genuine Volvo Mass Air Flow Sensor

MAF Sensor Meter

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21 Mass Air Flow Sensors found

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Volvo Mass Air Flow Sensor Part Number: 30713512
$339.80 MSRP: $442.45
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Product Specifications
- Other Name: Mass Air Flow; Air Mass Sensor; Air Mass Sensor, Mass Air Flow Sensor
Fits the following Volvo Models:
- S60 | 2001-2006 | 2.4, 2.4T, AWD, Base, T5 | 5 Cyl 2.3 L GAS, 5 Cyl 2.4 L GAS, 5 Cyl 2.5 L GAS
- V70 | 2001-2007 | 2.4, 2.4T, 2.5T, 2.5T AWD, Base, T5, X/C | 5 Cyl 2.3 L GAS, 5 Cyl 2.4 L GAS, 5 Cyl 2.5 L GAS
- XC70 | 2003-2007 | Base, Ocean Race, X/C | 5 Cyl 2.5 L GAS
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Volvo Mass Air Flow Sensor Part Number: 30751293
$339.80 MSRP: $442.45
You Save: $102.65 (24%)
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Product Specifications
- Other Name: Mass Air Flow; Air Mass Sensor
Fits the following Volvo Models:
- S60 | 2011-2016 | T6, T6 Polestar, T6 R-Design, T6 R-Design Platinum | 6 Cyl 3.0 L GAS
- S80 | 2008-2015 | T6 | 6 Cyl 3.0 L GAS
- V60 | 2015-2016 | T6 Polestar, T6 R-Design, T6 R-Design Platinum | 6 Cyl 3.0 L GAS
- XC60 | 2010-2016 | T6, T6 Ocean Race, T6 Platinum, T6 Premier, T6 R-Design, T6 R-Design Platinum | 6 Cyl 3.0 L GAS
- XC70 | 2009-2015 | T6 | 6 Cyl 3.0 L GAS
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Volvo Mass Air Flow Sensor Part Number: 31342521
$339.80 MSRP: $442.45
You Save: $102.65 (24%)
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Product Specifications
- Other Name: Mass Air Flow
Fits the following Volvo Models:
- S60 | 2015-2018 | Polestar, T5, T5 Dynamic, T5 Inscription, T5 Inscription Platinum, T5 Inscription Premier, T5 Platinum, T5 Premier, T5 Premier Plus, T5 R-Design Special Edition, T6, T6 Platinum, T6 Premier Plus, T6 R-Design Platinum | 4 Cyl 2.0 L GAS
- S60 Cross Country | 2017-2018 | T5 | 4 Cyl 2.0 L GAS
- S80 | 2015-2016 | T5, T5 Platinum | 4 Cyl 2.0 L GAS
- V60 | 2015-2018 | Polestar, T5, T5 Dynamic, T5 Platinum, T5 Premier, T5 Premier Plus, T6 R-Design, T6 R-Design Platinum | 4 Cyl 2.0 L GAS
- V60 Cross Country | 2017-2018 | T5, T5 Platinum | 4 Cyl 2.0 L GAS
- XC60 | 2015-2017 | T5, T5 Dynamic, T5 Inscription, T5 Platinum, T5 Premier, T6, T6 Dynamic, T6 Inscription, T6 Ocean Race, T6 Platinum, T6 Premier, T6 R-Design | 4 Cyl 2.0 L GAS
- XC70 | 2015-2016 | T5, T5 Platinum, T5 Premier | 4 Cyl 2.0 L GAS
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Volvo Mass Air Flow Sensor Part Number: 31380619
$339.80 MSRP: $442.45
You Save: $102.65 (24%)
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Product Specifications
- Other Name: Mass Air Flow; Air Mass Sensor, Mass Air Flow Sensor
Fits the following Volvo Models:
- S60 | 2012-2016 | T5, T5 Inscription Platinum, T5 Inscription Premier, T5 Platinum, T5 Premier, T5 Premier Plus | 5 Cyl 2.5 L GAS
- S60 Cross Country | 2016 | T5 Platinum | 5 Cyl 2.5 L GAS
- V60 | 2015-2016 | T5, T5 Platinum, T5 Premier, T5 Premier Plus | 5 Cyl 2.5 L GAS
- XC60 | 2015-2016 | T5, T5 Platinum, T5 Premier | 5 Cyl 2.5 L GAS
- XC70 | 2016 | T5, T5 Platinum, T5 Premier | 5 Cyl 2.5 L GAS
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Volvo Mass Air Flow Sensor Part Number: 31430000
$339.80 MSRP: $442.45
You Save: $102.65 (24%)
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Product Specifications
- Other Name: Mass Air Flow; Air Mass Sensor, Mass Air Flow Sensor
Fits the following Volvo Models:
- S60 | 2019-2023 | Recharge R-Design, T5 Inscription, T5 Momentum, T5 R-Design, T6 Inscription, T6 Momentum, T6 R-Design, T8 Inscription, T8 Polestar, T8 R-Design, T8 Recharge Core, T8 Recharge Inscription, T8 Recharge Plus, T8 Recharge Polestar, T8 Recharge R-Design, T8 Recharge R-Design Expression, T8 Recharge Ultimate | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV)
- S90 | 2017-2023 | B6 Inscription, B6 Momentum, B6 Plus, B6 R-Design, B6 Ultimate, T5 Inscription, T5 Momentum, T6 Inscription, T6 Momentum, T6 R-Design, T8 Inscription, T8 Momentum, T8 R-Design, T8 Recharge Inscription, T8 Recharge R-Design, T8 Recharge Ultimate | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV), 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV)
- V60 | 2019-2023 | T5 Inscription, T5 Momentum, T5 R-Design, T6 Inscription, T6 Momentum, T6 R-Design, T8 Polestar, T8 Recharge Polestar | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV)
- V60 Cross Country | 2020-2023 | B5 Plus, B5 Ultimate, T5 | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- V90 | 2018-2021 | T5 Inscription, T5 R-Design, T6 Inscription, T6 R-Design | 4 Cyl 2.0 L GAS
- V90 Cross Country | 2017-2021 | T5, T6, T6 Ocean Race | 4 Cyl 2.0 L GAS
- XC40 | 2019-2022 | T4 Inscription, T4 Momentum, T4 R-Design, T5 Inscription, T5 Momentum, T5 R-Design | 4 Cyl 2.0 L GAS
- XC60 | 2018-2023 | B5 Core, B5 Inscription, B5 Momentum, B5 Plus, B5 R-Design, B5 Ultimate, B6 Inscription, B6 R-Design, B6 Ultimate, T5 Inscription, T5 Momentum, T5 R-Design, T6 Inscription, T6 Momentum, T6 R-Design, T8 Inscription, T8 Momentum, T8 Polestar, T8 R-Design, T8 Recharge Core, T8 Recharge Inscription, T8 Recharge Inscription Expression, T8 Recharge Plus, T8 Recharge Polestar, T8 Recharge R-Design, T8 Recharge Ultimate | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV), 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV)
- XC90 | 2016-2023 | T5 Inscription, T5 Momentum, T5 R-Design, T6 First Edition, T6 Inscription, T6 Momentum, T6 R-Design, T8 Excellence, T8 Inscription, T8 Momentum, T8 R-Design, T8 Recharge Core, T8 Recharge Inscription, T8 Recharge Inscription Expression, T8 Recharge Plus, T8 Recharge R-Design, T8 Recharge Ultimate | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV)
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Volvo Mass Air Flow Sensor Part Number: 31459871
$339.80 MSRP: $442.45
You Save: $102.65 (24%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Mass Air Flow; Air Mass Sensor, Mass Air Flow Sensor
Fits the following Volvo Models:
- S60 | 2022-2023 | B5 Core, B5 Inscription, B5 Momentum, B5 Plus, B5 R-Design, B5 Ultimate | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- S90 | 2022-2023 | B6 Inscription, B6 Momentum, B6 Plus, B6 R-Design, B6 Ultimate | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- V60 Cross Country | 2020-2021 | T5 | 4 Cyl 2.0 L GAS
- V90 Cross Country | 2022-2023 | B6, B6 Plus, B6 Ultimate | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- XC40 | 2023 | B4 Plus, B4 Ultimate, B5 Core, B5 Plus, B5 Ultimate | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- XC90 | 2023 | B5 Core, B5 Plus, B6 Core, B6 Plus, B6 Ultimate, T8 Recharge Core, T8 Recharge Plus, T8 Recharge Ultimate | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV), 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV)
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Volvo Mass Air Flow Sensor Part Number: 8658471
$339.80 MSRP: $442.45
You Save: $102.65 (24%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Mass Air Flow; Air Mass Sensor
Fits the following Volvo Models:
- S40 | 2004-2010 | 2.4i, i | 5 Cyl 2.4 L GAS
- S80 | 2007-2015 | 3.2, T6, V8 | 6 Cyl 3.0 L GAS, 6 Cyl 3.2 L GAS, 8 Cyl 4.4 L GAS
- V50 | 2005-2010 | 2.4i, i | 5 Cyl 2.4 L GAS
- V70 | 2008-2010 | 3.2 | 6 Cyl 3.2 L GAS
- XC60 | 2010-2015 | 3.2, 3.2 R-Design | 6 Cyl 3.2 L GAS
- XC70 | 2008-2015 | 3.2 | 6 Cyl 3.2 L GAS
- XC90 | 2005-2014 | 3.2, 3.2 R-Design, V8, V8 Ocean Race, V8 Sport | 6 Cyl 3.2 L GAS, 8 Cyl 4.4 L GAS
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Volvo Mass Air Flow Sensor Part Number: 31342362
$403.52 MSRP: $525.42
You Save: $121.90 (24%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Mass Air Flow Sensor Assembly; Air Mass Sensor, Mass Air Flow Sensor
Fits the following Volvo Models:
- C70 | 1999-2004 | Base | 5 Cyl 2.3 L GAS, 5 Cyl 2.4 L GAS
- S60 | 2001-2009 | 2.4T, 2.5T, 2.5T AWD, AWD, Base, T5 | 5 Cyl 2.3 L GAS, 5 Cyl 2.4 L GAS, 5 Cyl 2.5 L GAS
- S70 | 1999-2000 | AWD, Base, GLT, GLT SE, T5 | 5 Cyl 2.3 L GAS, 5 Cyl 2.4 L GAS
- S80 | 1999-2006 | 2.5T, 2.5T AWD, 2.9 | 5 Cyl 2.5 L GAS, 6 Cyl 2.9 L GAS
- V70 | 1999-2007 | 2.4, 2.4T, 2.5T, 2.5T AWD, AWD, Base, GLT, GLT SE, R, R AWD, T5, X/C, X/C AWD, X/C AWD SE | 5 Cyl 2.3 L GAS, 5 Cyl 2.4 L GAS, 5 Cyl 2.5 L GAS
- XC70 | 2003-2007 | Base, Ocean Race, X/C | 5 Cyl 2.5 L GAS
- XC90 | 2003-2006 | 2.5T, Base | 5 Cyl 2.5 L GAS
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Volvo Mass Air Flow Sensor Part Number: 31342363
$403.52 MSRP: $525.42
You Save: $121.90 (24%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Air Mass Sensor, Mass Air Flow Sensor
Fits the following Volvo Models:
- S60 | 2003-2007 | 2.5T, 2.5T AWD, AWD, R, T5 | 5 Cyl 2.3 L GAS, 5 Cyl 2.4 L GAS, 5 Cyl 2.5 L GAS
- S80 | 2002-2005 | T6, T6 Premier | 6 Cyl 2.9 L GAS
- V70 | 2004-2007 | R | 5 Cyl 2.5 L GAS
- XC90 | 2003-2005 | T6 | 6 Cyl 2.9 L GAS
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Volvo Mass Air Flow Sensor Part Number: 31342364
$403.52 MSRP: $525.42
You Save: $121.90 (24%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Mass Air Flow; Air Mass Sensor
Fits the following Volvo Models:
- C30 | 2008-2013 | T5, T5 R-Design | 5 Cyl 2.5 L GAS
- C70 | 2006-2013 | T5 | 5 Cyl 2.5 L GAS
- S40 | 2004-2011 | T5, T5 R-Design | 5 Cyl 2.5 L GAS
- V50 | 2005-2011 | T5, T5 R-Design | 5 Cyl 2.5 L GAS
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Volvo Mass Air Flow Sensor Part Number: 31459404
$403.52 MSRP: $525.42
You Save: $121.90 (24%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Mass Air Flow; Air Mass Sensor, Mass Air Flow Sensor
- Replaces: 31216661
Fits the following Volvo Models:
- S60 | 2012 | T5 | 5 Cyl 2.5 L GAS
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Volvo Mass Air Flow Sensor Part Number: 8251497
$259.19 MSRP: $307.82
You Save: $48.63 (16%)
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Product Specifications
- Other Name: Manifold Sensor Air Flow Meter Fuel Injection; Air Mass Sensor, Mass Air Flow Sensor, Meter
Fits the following Volvo Models:
- 740 | 1990-1992 | Base, GL, GLE, T | 4 Cyl 2.3 L GAS
- 760 | 1990 | Base | 4 Cyl 2.3 L GAS
- 780 | 1990-1991 | Base | 4 Cyl 2.3 L GAS
- 940 | 1991-1995 | Base, GL, GLE, SE, T | 4 Cyl 2.3 L GAS
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Volvo Mass Air Flow Sensor Part Number: 1275749
$310.51 MSRP: $369.66
You Save: $59.15 (16%)
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Product Specifications
- Other Name: Mass Air Flow Sensor Assembly; Air Mass Sensor; Air Mass Sensor, Mass Air Flow Sensor
Fits the following Volvo Models:
- 850 | 1993-1997 | Base, GLT, R, T-5, T-5R, Turbo | 5 Cyl 2.3 L GAS, 5 Cyl 2.4 L GAS
- C70 | 1998 | Base | 5 Cyl 2.3 L GAS, 5 Cyl 2.4 L GAS
- S70 | 1998 | Base, GLT, T5 | 5 Cyl 2.3 L GAS, 5 Cyl 2.4 L GAS
- V70 | 1998 | AWD, Base, GLT, R, T5, X/C AWD | 5 Cyl 2.3 L GAS, 5 Cyl 2.4 L GAS
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Volvo Mass Air Flow Sensor Part Number: 1275636
$361.02 MSRP: $462.84
You Save: $101.82 (22%)
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Product Specifications
- Other Name: Mass Air Flow; Mass Air Flow Sensor Assembly; Air Mass Sensor, Mass Air Flow Sensor
Fits the following Volvo Models:
- S70 | 1999-2000 | AWD, Base, GLT, GLT SE, T5 | 5 Cyl 2.3 L GAS, 5 Cyl 2.4 L GAS
- V70 | 1999-2000 | AWD, Base, GLT, GLT SE, R AWD, T5, X/C AWD, X/C AWD SE | 5 Cyl 2.3 L GAS, 5 Cyl 2.4 L GAS
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Volvo Mass Air Flow Sensor Part Number: 30611231
$255.20 MSRP: $303.82
You Save: $48.62 (16%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Mass Air Flow Sensor Assembly; Air Mass Sensor; Air Mass Sensor, Mass Air Flow Sensor
Fits the following Volvo Models:
- S40 | 2000 | Base | 4 Cyl 1.9 L GAS
- V40 | 2000 | Base | 4 Cyl 1.9 L GAS
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Volvo Air Mass Sensor Part Number: 1366220
$329.84 MSRP: $392.67
You Save: $62.83 (16%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Mass Air Flow 2507; Mass Air Flow Sensor; Air Mass Sensor
Fits the following Volvo Models:
- 850 | 1993-1995 | Base, GLT, T-5R, Turbo | 5 Cyl 2.3 L GAS, 5 Cyl 2.4 L GAS
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Volvo Mass Air Flow Sensor Part Number: 8670113
$424.38 MSRP: $505.21
You Save: $80.83 (16%)
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Product Specifications
- Other Name: Mass Air Flow; Mass Air Flow Sensor Assembly; Air Mass Sensor, Mass Air Flow Sensor
Fits the following Volvo Models:
- S80 | 1999-2001 | T6 | 6 Cyl 2.8 L GAS
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Volvo Air Mass Sensor Part Number: 8251500
$299.64 MSRP: $356.22
You Save: $56.58 (16%)
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Product Specifications
- Other Name: MAF-Sensor, Exchange; Mass Air Flow Sensor; Air Mass Sensor
Fits the following Volvo Models:
- 760 | 1985-1990 | GLE | 6 Cyl 2.8 L GAS
- 780 | 1987-1990 | Base | 6 Cyl 2.8 L GAS
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Volvo Mass Air Flow Sensor Part Number: 5517020
$542.69 MSRP: $701.14
You Save: $158.45 (23%)
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Product Specifications
- Other Name: Mass Air Flow Sensor Assembly; Mass Air Flow Sensor
Fits the following Volvo Models:
- 240 | 1991 | Base, SE | 4 Cyl 2.3 L GAS
- 740 | 1991-1992 | Base, T | 4 Cyl 2.3 L GAS
- 780 | 1991 | Base | 4 Cyl 2.3 L GAS
- 940 | 1991-1994 | Base, GL, GLE, T | 4 Cyl 2.3 L GAS
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Volvo Mass Air Flow Sensor Part Number: 30611532
Product Specifications
- Other Name: Mass Air Flow Sensor Assembly; Air Mass Sensor, Mass Air Flow Sensor
Fits the following Volvo Models:
- S40 | 2001-2004 | Base, LSE | 4 Cyl 1.9 L GAS
- V40 | 2001-2004 | Base, LSE | 4 Cyl 1.9 L GAS

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Volvo Mass Air Flow Sensor Parts and Q&A

Mass Air Flow Sensor
8251497
Q: What are the features and testing procedures for the Mass Air Flow Sensor on Volvo 740?
A:
The sensor inside the air mass meter has a wire that is kept at 250degF (120degC) above the ambient air temperature of incoming air. As the air mass increases, more current is required to maintain the correct wire temperature and this current is used to calculate the air mass intake. When the engine is shut off, any dirt on the wire gets burned off electrically by heating the element to 1832degF (1000degC) for 1 second; any tiny bit of dirt left could cause wrong signals to be sent to the control unit, resulting in a wrong air/fuel mixture. To test the MAF sensor, it is necessary to disconnect the connector, then by wiring diagrams find the signal ground wire and measure the resistance with a DVOM, it should be 0 ohms. Next, locate the signal circuit and measure the voltage between it and ground with ignition in ON position, it should be equal to battery voltage. After plugging the MAF sensor connector back in, backprobe the signal return and signal ground with the key in the ON position, expecting a voltage of 0.1 - 0.2v. If the voltage is okay, make sure all the connections are tight or change the MAF sensor. To remove it, disconnect the negative battery cable, unplug the sensor connector and remove the two retaining screws to remove the sensor. To install, fit the sensor into the air inlet hose, tighten the retaining screws on the sensor, plug in the connector and reconnect the negative battery cable.