Oxygen Sensor Replacement at your home or office.

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How much does Oxygen Sensor Replacement cost?

It depends on the type of car you drive and the auto repair shop you go to. Our mechanics are mobile, which means they don't have the overhead that repair shops have. They provide you convenience by coming to your home or office.

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2011 Toyota Avalon $201 $130.78 $70.00 15% $238.28
2013 Volvo XC70 $422 $351.60 $70.00 8% $459.10
2012 Hyundai Elantra $266 $195.58 $70.00 12% $303.08
2003 Chrysler Sebring $196 $125.98 $70.00 16% $233.48
2010 Toyota Tacoma $350 $279.58 $70.00 9% $387.08
2013 Audi A8 Quattro $356 $166.78 $189.00 22% $457.03
2006 Audi A4 $315 $244.94 $70.00 10% $352.44
2006 BMW X5 $287 $216.60 $70.00 11% $324.10
2004 Mercedes-Benz CLK55 AMG $212 $141.56 $70.00 15% $249.06
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Oxygen Sensor Replacement 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

Keep in mind:

  • 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 this service?

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.

Fast and easy Oxygen Sensor Replacement service at your home or office.

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Recent Oxygen Sensor Replacement reviews

Excellent Rating


Oxygen Sensor Replacement

Average Rating

4.8/5

Number of Reviews

645

Rating Summary
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4
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9

Terry

22 years of experience
301 reviews
Terry
22 years of experience
Very nice guy. Worked fast. Got the job done.
2000 NISSAN XTERRA - OXYGEN SENSOR REPLACEMENT (FRONT/UPPER/UPSTREAM) - PHOENIX, ARIZONA

Ricardo

7 years of experience
190 reviews
Ricardo
7 years of experience
Ricardo was very knowledgeable, effient most importantantly... Honest!
1982 CHEVROLET CORVETTE - OXYGEN SENSOR REPLACEMENT (FRONT/UPPER/UPSTREAM) - LOS ANGELES, CALIFORNIA

Michael

23 years of experience
167 reviews
Michael
23 years of experience
Michael was great. He arrived earlier than scheduled, was very knowledgeable and professional, did more than I expected with a thorough inspection of my car besides doing the repair needed. All done on a heavily rainy day. He and YourMechanic saved me so much time and money. I highly recommended Michael and YourMechanic. Thank you so much!!
1998 MITSUBISHI MONTERO SPORT - OXYGEN SENSOR REPLACEMENT (REAR/LOWER/DOWNSTREAM) - LOS ANGELES, CALIFORNIA

Chris

7 years of experience
148 reviews
Chris
7 years of experience
Chris was super helpful and professional. He was very knowledgeable and gave me some pointers for my car. Very polite and friendly, I told him about a coupon I had added but it didn't show up when I put the quote through, so he went ahead and apply the code for me. I really appreciate his quick work and customer services. I will definitely refer my friends and family to him. Thank you very much, Nick M.
1999 SATURN SL - OXYGEN SENSOR REPLACEMENT (REAR/LOWER/DOWNSTREAM) - TEMPE, ARIZONA

How can we help?

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