Mass Airflow Sensor (MAF): Symptoms, Diagnosis & Replacement Guide
A bad Mass Airflow Sensor (MAF) can lead to engine issues. Use an OBD2 scanner to diagnose problems and replace with a quality aftermarket sensor for better performance.
Jul 21, 2026
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Lexus RX400h Air Flow Sensor
8 itemsKeep your engine running smoothly with A-Premium's reliable air flow sensors. Trust our high-quality parts for the best performance.
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Spectra PremiumPart # MA102
Spectra Premium MA102 Mass Air Flow Sensor
4.616 Reviews
$110.99
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3-year warranty
90 days free return
Fits 2001-2008 Jaguar X-Type, 2002-2002 Jaguar S-Type, 2003-2006 Jaguar S-Type, 2003-2006 Jaguar XK8, 2003-2008 Jaguar S-Type, 2003-2008 Jaguar S-Type, 2004-2005 Jaguar XJR, 2004-2009 Jaguar Vanden Plas, 2004-2009 Jaguar XJ8, 2006-2006 Jaguar S-Type, 2009-2009 Jaguar XF, 2009-2009 Jaguar XF, 2010-2010 Jaguar XF, 2013-2015 Jaguar XJ, 2005-2009 Land Rover LR3, 2005-2009 Land Rover Range Rover, 2006-2009 Land Rover Range Rover Sport, 2008-2012 Land Rover LR2, 1999-2001 Lexus ES300, 1999-2003 Lexus RX300
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Vehicle: Lexus RX400h
Item LocatedUnited States
Quantity1
ColorBlack
Part interchange
MA102, MAF10135, MQ6203, MAS0188, MAS0275, MAS0267, MF4226T, MF4228,
...View moreitem #1000YEU9
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StandardPart # MAS0188
Standard MAS0188 Mass Air Flow Sensor
51 Reviews
$117.99
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3-year warranty
90 days free return
Fits 2002-2002 Jaguar S-Type, 2002-2008 Jaguar X-Type, 2003-2006 Jaguar S-Type, 2003-2006 Jaguar XK8, 2003-2008 Jaguar S-Type, 2003-2008 Jaguar S-Type, 2004-2009 Jaguar Vanden Plas, 2004-2009 Jaguar XJ8, 2006-2006 Jaguar S-Type, 2009-2010 Jaguar XF, 2005-2009 Land Rover LR3, 2006-2009 Land Rover Range Rover, 2006-2009 Land Rover Range Rover Sport, 2008-2012 Land Rover LR2, 1999-1999 Lexus ES300, 1999-2003 Lexus RX300, 2000-2006 Lexus GS300, 2001-2005 Lexus IS300, 2001-2006 Lexus LS430, 2002-2003 Lexus ES300
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Vehicle: Lexus RX400h
Item LocatedUnited States
Quantity1
MaterialPlastic
item #100167P6
Note
Sensor Only
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DensoPart # 197-6030
Mass Air Flow Sensor - Denso 197-6030
4.523 Reviews
$156.99
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3-year warranty
90 days free return
Fits 2001-2005 Lexus IS300, 2001-2006 Lexus GS300, 2001-2006 Lexus LS430, 2002-2003 Lexus ES300, 2004-2006 Lexus ES330, 2004-2006 Lexus RX330, 2006-2007 Lexus GS430, 2006-2008 Lexus RX400h, 2007-2011 Lexus GS450h, 2000-2005 Toyota Celica, 2000-2005 Toyota MR2 Spyder, 2001-2005 Toyota RAV4, 2001-2007 Toyota Highlander, 2002-2006 Toyota Camry, 2003-2008 Toyota Corolla, 2003-2008 Toyota Matrix, 2003-2009 Toyota 4Runner, 2004-2006 Toyota Camry, 2004-2006 Toyota Sienna, 2004-2008 Toyota Solara
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Vehicle: Lexus RX400h
Item LocatedUnited States
Quantity1
ColorBlack
Part interchange
197-6030, 64-1748, 1976030, XTP450009, 22204-0C020, 22204-0D030, 22204-22010, 22204-0J010,
...View moreitem #1002HLS1
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Walker ProductsPart # 245-1095
Walker Products 245-1095 Mass Air Flow Sensor
51 Reviews
$64.99
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3-year warranty
90 days free return
Fits 1999-2001 Lexus ES300, 1999-2003 Lexus RX300, 2001-2005 Lexus IS300, 2001-2006 Lexus GS300, 2001-2006 Lexus LS430, 2002-2003 Lexus ES300, 2004-2006 Lexus ES330, 2004-2006 Lexus RX330, 2006-2007 Lexus GS430, 2006-2008 Lexus RX400h, 2007-2011 Lexus GS450h, 1999-2001 Mazda Protege, 2003-2005 Mazda 6, 2004-2006 Mazda 3, 2004-2011 Mazda RX-8, 2006-2006 Mazda 6, 2006-2006 Mazda 6, 2006-2010 Mazda 5, 2006-2015 Mazda MX-5 Miata, 2007-2008 Mazda 6
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Vehicle: Lexus RX400h
Item LocatedUnited States
Quantity1
Part interchange
245-1095, 71742070, 71792016, 1MF105, 917-816, XTP450009, 19205185, 88969106,
...View moreitem #1001P2WC
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A-Premium®Part # APMAF251
Mass Air Flow Sensor for 2006-2008 Lexus RX400h
4.5331 Reviews
$35.99
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2-year warranty
90 days free return
Fits Lexus RX400h: 2006 2007 2008
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Vehicle: Lexus RX400h
Item LocatedUnited States
Quantity1
ColorBlack
item #10046SGY
Note
This item is a sensor only.
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Beck/ArnleyPart # 158-0777
Beck/Arnley 158-0777 Mass Air Flow Sensor
4.434 Reviews
$189.99
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3-year warranty
90 days free return
Fits 2002-2002 Jaguar S-Type, 2002-2008 Jaguar X-Type, 2003-2006 Jaguar S-Type, 2003-2006 Jaguar XK8, 2003-2008 Jaguar S-Type, 2003-2008 Jaguar S-Type, 2004-2009 Jaguar Vanden Plas, 2004-2009 Jaguar XJ8, 2006-2006 Jaguar S-Type, 2009-2009 Jaguar XF, 2009-2009 Jaguar XF, 2010-2010 Jaguar XF, 2005-2007 Land Rover LR3, 2005-2009 Land Rover Range Rover, 2006-2009 Land Rover Range Rover Sport, 2008-2009 Land Rover LR3, 2008-2012 Land Rover LR2, 1999-2001 Lexus ES300, 1999-2003 Lexus RX300, 2001-2005 Lexus IS300
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Vehicle: Lexus RX400h
Item LocatedUnited States
Quantity1
Part interchange
158-0777
item #1000XCS7
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AisinPart # MAFAZ-00270
AISIN Mass Air Flow Sensor for 2006-2008 Lexus RX400h
4.5331 Reviews
$78.99
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2-year warranty
90 days free return
Fits Lexus RX400h: 2006 2007 2008
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Vehicle: Lexus RX400h
Item LocatedUnited States
Quantity1
ColorBlack
ConditionNew
item #10187DXP
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DelphiPart # AF10135
Delphi Air Flow Sensor 2006-2008 Lexus RX400h 3.3L V6 at A-Premium
32 Reviews
$112.99
Edit ZIP code
3-year warranty
90 days free return
Fits Lexus RX400h: 2006 2007 2008
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus RX400h
Item LocatedUnited States
Quantity1
ColorBlack & Silver
Part interchange
AF10135, 5S2732, 5S2734, 5S2748, 5S2983, SU5092, SU5225, SU5373,
...View moreitem #1001V1H6
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Mass Air Flow Sensors From $26.99
4,848+ Applications | Free Shipping | 3-Year Warranty
Your engine needs the right air-fuel mixture to run smoothly, and that's where we come in. Our MAF sensors measure airflow with lab-grade accuracy, sending real-time data to your engine computer so you get maximum power and fuel economy. When yours starts acting up, you'll know it fast.
How to Tell If You Have a Faulty Mass Airflow Sensor
Your check engine light pops on first?usually with codes P0100 to P0104. But you'll feel the problems before you see the light. Rough idling hits you at stoplights as your engine shakes or stalls from incorrect air-fuel mixture. Step on the gas and your car hesitates or stumbles instead of accelerating smoothly.
A faulty mass air flow sensor typically causes your check engine light to come on since your ECU constantly monitors sensor inputs, triggering diagnostic trouble codes in the range of P0100 to P0104. Your fuel economy tanks too?we're talking 15-30% worse gas mileage because your engine runs too rich without accurate sensor readings.
Common MAF Sensor Failure Signs:
? Check engine light: Codes P0100-P0104 tell you the sensor circuit has problems
? Poor acceleration: Engine hesitates when you need power most
? Bad fuel economy: Fuel usage jumps 20-40% as your ECU defaults to rich mixture
? Hard starting: Takes multiple tries to crank the engine, especially when cold
? Black exhaust smoke: Dark smoke means your engine's burning way too much fuel
Mass Air Flow Sensor Replacement Cost
Dealerships charge $200-$500 for MAF sensor replacement?that's parts plus labor. You're paying $100-$350 just for the sensor itself. We sell the exact same quality sensors starting at $26.99, saving you serious cash. Breaking sensor wires requires replacement which can run upwards of $100, so our sensors use the same rugged construction as OEM parts.
Installation takes 15 minutes max. Disconnect your battery, unplug the electrical connector, remove two to four screws, and swap in the new sensor. That's it. You don't need special tools or mechanic skills?just basic hand tools you already own.
Why Choose Our MAF Sensors
We stock sensors for 4,848 different vehicles?cars, trucks, SUVs?basically everything on American roads. Each sensor features platinum or gold-plated elements that measure airflow within 2% accuracy across all temperatures. You get OEM-equivalent performance at a fraction of dealer prices.
Every sensor ships free and leaves our warehouse within 1 business day. We back everything with a 3-year warranty and 90-day free returns. If it doesn't fit or work perfectly, send it back?no questions asked. That's how confident we are in our parts.
Get Your Engine Running Right
MAF sensors for 4,848+ vehicles | Starting at $26.99
Order NowFrequently Asked Questions
Can I clean my MAF sensor instead of replacing it?
You should clean your mass airflow sensor either every six months or every time you change your oil, cleaning it when you change your air filter saves time and money. Use only MAF sensor cleaner spray?never touch the sensor wires. If cleaning doesn't fix your issues, replacement is necessary.
How long do mass air flow sensors last?
At the ten-year point (80,000 to 150,000 miles), your vehicle will likely need a new sensor. Sensors don't need regular replacement like oil filters?only replace them when they fail or cause performance problems.
Will a bad MAF sensor damage my engine?
Yes. Running with a faulty MAF sensor causes your engine to run too rich, which dumps excess fuel into your exhaust system. This unburned fuel will destroy your catalytic converter?a $1,200-$2,500 repair. Replace the $27 sensor now to avoid thousand-dollar repairs later.
Do you have the right sensor for my car?
We stock MAF sensors for 4,848 vehicle applications from virtually every manufacturer. Enter your year, make, and model on our site and we'll show you the exact sensor your vehicle needs. All our sensors are guaranteed to fit or you get your money back.
What's your return policy if the sensor doesn't work?
We offer 90-day free returns, no questions asked. If the sensor doesn't fit, doesn't fix your problem, or you're not completely satisfied, send it back for a full refund. We also provide a 3-year warranty covering any defects.
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Can a Bad Mass Air Flow Sensor Cause Rough Idle?
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