Acura MDX Oxygen Sensor Replacement at your home or office.

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$159.24 - $666.35

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Oxygen Sensor Replacement Estimate for Acura MDX

Acura MDX Oxygen Sensor Replacement costs $366 on average.

CarServiceEstimateShop/Dealer Price
2003 Acura MDXV6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$1183.71Shop/Dealer Price$1484.31 - $2333.41
2010 Acura MDXV6-3.7LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$687.31Shop/Dealer Price$865.82 - $1327.26
2008 Acura MDXV6-3.7LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$970.31Shop/Dealer Price$1215.15 - $1899.59
2011 Acura MDXV6-3.7LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$694.31Shop/Dealer Price$874.02 - $1336.36
2005 Acura MDXV6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$1183.71Shop/Dealer Price$1487.35 - $2338.74
2007 Acura MDXV6-3.7LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$715.31Shop/Dealer Price$897.82 - $1378.02
2004 Acura MDXV6-3.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$466.91Shop/Dealer Price$582.89 - $890.33
2018 Acura MDXV6-3.0L HybridService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$253.49Shop/Dealer Price$310.92 - $454.40
Show example Acura MDX Oxygen Sensor Replacement prices

Service

What is the Oxygen Sensor all about?

With each new model year, manufacturers are adding more oxygen sensors to better manage engine operation. Some high performance engines have an oxygen sensor for each cylinder as well as one for the rear of each catalytic convertor. The sensors are located either underneath the hood or underneath the car. The oxygen sensors are connected (screwed) to the exhaust pipe, either in front or back of the catalytic converter. The front (upstream) sensors measure the amount of oxygen in the exhaust system. The purpose of the front oxygen sensor(s) is to measure how rich or lean the gases are as the gases exit the combustion chamber. Depending upon whether the exhaust gas is lean (high in oxygen content) or rich (low in oxygen content), the amount of fuel entering the engine is adjusted by the engine management computer to try and maintain an ideal mixture that produces the lowest emissions output from the catalytic convertor.

Rear (downstream) sensors are located behind the catalytic converter. The purpose of the rear oxygen sensor(s) is to monitor the oxygen content of the exhaust gases leaving the catalytic convertor.

If one or more of the oxygen sensors are faulty, your car may not pass the emissions test. If you drive your car with a faulty oxygen sensor, you may get poor gas mileage and it can damage the catalytic converter.

Oxygen Sensor-MATROX-1

When replacing the oxygen sensor remember:

  • Many oxygen sensors are damaged by leaking oil or coolant. If that is the case, the cause of that leak needs to be identified and repaired, or else the replacement oxygen sensor will be damaged as well.
  • New vehicles require specific oxygen sensors, and not the universal sensors that were common prior to 1996.

How it's done:

  • Scan the computer in the car for codes.
  • Inspect for vacuum leaks and holes in the exhaust system.
  • Remove and replace the oxygen sensor if it is bad.
  • Check electrical connections.
  • Check for proper operation of oxygen sensors.
  • Clear diagnostic codes.
  • Test drive car.

Our recommendation:

Keep up with the tune-ups. If check engine light is on, don't drive the car too long without getting it inspected. If check engine light is flashing, pull over and get the car towed to avoid costly repairs. Ask the mechanic to inspect the vacuum hoses and leaks in the exhaust system. If the vacuum hose or exhaust system is leaking, it will display an oxygen sensor fault code. Replacing an oxygen sensor may not fix the problem.

What common symptoms indicate you may need to replace the Oxygen Sensor?

  • Check Engine light is on.
  • Car is getting poor gas mileage.
  • Emission test fails.

How important is replacing the oxygen sensor?

Your vehicle has multiple oxygen sensors, and they all help the car run optimally. The front sensors measure how much oxygen is in the exhaust stream to measure how rich or lean the gases leaving the gas chamber are. The rear sensors measure the oxygen content of the gases as they leave the catalytic converter. The oxygen sensors then relay this information to your vehicle’s electronic control unit, so that it can adjust as necessary. Because cars depend on an ideal fuel-to-air ratio to function optimally, the oxygen sensors are leaned on for engine performance. When your oxygen sensors fail your car will run less smoothly, get worse mileage, and have worse emissions.

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Meet some of our expert Acura mechanics

Real customer reviews from Acura owners like you.

Excellent Rating


YourMechanic Acura MDX Oxygen Sensor Replacement Service

Average Rating

4.6/5

Number of Reviews

9

Rating Summary
8
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Attila

16 years of experience
174 reviews
Attila
16 years of experience
Attilas was very professional. Arrived on time and promptly completed the service on my vehicle. Will definitely request him in the future.
2008 ACURA MDX - OXYGEN SENSOR REPLACEMENT (FRONT/UPPER/UPSTREAM) - BLOOMFIELD, NEW JERSEY

Eugenio

23 years of experience
133 reviews
Eugenio
23 years of experience
Eugenio is professional in his work, expertise and character. He double checked the initial diagnosis, had all the right tools and was neat and tidy in his work. He is knowledgeable about many vehicles (per our discussions on my other cars). He did not apply any pressure for additional work; as a matter of fact, the inspection report is a pleasant surprise. I highly recommend Eugenio, and will request him on any further work my cars may require.
2004 ACURA MDX - OXYGEN SENSOR REPLACEMENT (REAR/LOWER/DOWNSTREAM) - WOODBRIDGE, VIRGINIA

Rigoberto

8 years of experience
517 reviews
Rigoberto
8 years of experience
The best mechanic around.
2003 ACURA MDX - OXYGEN SENSOR REPLACEMENT (FRONT/UPPER/UPSTREAM) - CHICAGO, ILLINOIS

Dellano

15 years of experience
257 reviews
Dellano
15 years of experience
Dellano called me an hour in advance to let me know that he will at my place at 5:45 pm and he did,he was very professional and completed the job much faster than ordinary mechanics.
2007 ACURA MDX - OXYGEN SENSOR REPLACEMENT (FRONT/UPPER/UPSTREAM) - WASHINGTON, DISTRICT OF COLUMBIA

Excellent Rating


YourMechanic Acura MDX Oxygen Sensor Replacement Service

Average Rating

4.6/5

Number of Reviews

9

Rating Summary
8
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0
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1
8
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1
Red-stars EXCELLENT RATING ON
Number of Acura MDX Oxygen Sensor Replacement services completed
99+
services done by our mechanics
TOTAL NUMBER OF EXPERT Acura MECHANICS
600+
experts on our platform

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