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.

YourMechanic Price
$82 to $2140
Labor: $70 -$1592
Parts: $12 -$548
Average Dealer price
$117 to 2949
Average Shop price
$98 to 2344
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Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%
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ServiceYourMechanic PriceShop/Dealer Price
Oxygen Sensor - Front/Upper/Upstream Replacement for 2011 Mitsubishi Outlander V6-3.0LYourMechanic Price$206.18Shop/Dealer Price$254.75 - $367.78
Oxygen Sensor - Rear/Lower/Downstream Replacement for 2012 Audi A8 Quattro W12-6.3LYourMechanic Price$365.95Shop/Dealer Price$479.12 - $663.54
Oxygen Sensor - Front/Upper/Upstream Replacement for 1985 Chevrolet C20 Suburban V8-6.2L DieselYourMechanic Price$107.84Shop/Dealer Price$131.84 - $171.12
Oxygen Sensor - Front/Upper/Upstream Replacement for 2012 Mercedes-Benz E350 V6-3.5LYourMechanic Price$192.83Shop/Dealer Price$251.43 - $352.66
Oxygen Sensor - Front/Upper/Upstream Replacement for 2000 Dodge Stratus L4-2.0LYourMechanic Price$154.30Shop/Dealer Price$189.90 - $264.02
Oxygen Sensor - Rear/Lower/Downstream Replacement for 1983 GMC K1500 L6-4.1LYourMechanic Price$108.55Shop/Dealer Price$132.70 - $172.50
Oxygen Sensor - Rear/Lower/Downstream Replacement for 1984 Chrysler Town & Country L4-2.6LYourMechanic Price$133.42Shop/Dealer Price$163.88 - $222.41
Oxygen Sensor - Rear/Lower/Downstream Replacement for 1994 Mercedes-Benz SL500 V8-5.0LYourMechanic Price$264.03Shop/Dealer Price$338.06 - $502.72
Show example Oxygen Sensor Replacement prices

Oxygen Sensor Replacement Service & Cost

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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Meet some of our expert mechanics

Real customer reviews from owners like you.

287 reviews
Steven
9 years of experience
Steven was punctual, professional and courteous and performed the repair quickly and cleanly. I will recommend his work to anyone. After his repair, I could pass the emissions test with ease, and was able to complete the licensing process the day of the repair. Thanks, Steven.
2004 TOYOTA COROLLA - OXYGEN SENSOR REPLACEMENT (FRONT/UPPER/UPSTREAM, REAR/LOWER/DOWNSTREAM)
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256 reviews
Jay
32 years of experience
He was very fast and gave me good information on what he did and he also told me about other issues with my car that I didn't know Jay was great
2007 FORD FUSION - OXYGEN SENSOR REPLACEMENT (FRONT/UPPER/UPSTREAM, REAR/LOWER/DOWNSTREAM)
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137 reviews
Richard
6 years of experience
Richard is very knowledgeable and honest. He works quickly and gave me good advice and recommendations. I won't hesitate to request him again.
2008 SUBARU IMPREZA - OXYGEN SENSOR REPLACEMENT (FRONT/UPPER/UPSTREAM)
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50 reviews
Luis
12 years of experience
Great mechanic.....very thorough. Have had the pleasure of his being here before. Highly recommend Luis.
1999 FORD E-150 ECONOLINE - OXYGEN SENSOR REPLACEMENT (FRONT/UPPER/UPSTREAM)
Want Luis's expert advice? Ask your question now. Its free!
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%
Get a quote
ServiceYourMechanic PriceShop/Dealer Price
Oxygen Sensor - Front/Upper/Upstream Replacement for 2011 Mitsubishi Outlander V6-3.0LYourMechanic Price$206.18Shop/Dealer Price$254.75 - $367.78
Oxygen Sensor - Rear/Lower/Downstream Replacement for 2012 Audi A8 Quattro W12-6.3LYourMechanic Price$365.95Shop/Dealer Price$479.12 - $663.54
Oxygen Sensor - Front/Upper/Upstream Replacement for 1985 Chevrolet C20 Suburban V8-6.2L DieselYourMechanic Price$107.84Shop/Dealer Price$131.84 - $171.12
Oxygen Sensor - Front/Upper/Upstream Replacement for 2012 Mercedes-Benz E350 V6-3.5LYourMechanic Price$192.83Shop/Dealer Price$251.43 - $352.66
Oxygen Sensor - Front/Upper/Upstream Replacement for 2000 Dodge Stratus L4-2.0LYourMechanic Price$154.30Shop/Dealer Price$189.90 - $264.02
Oxygen Sensor - Rear/Lower/Downstream Replacement for 1983 GMC K1500 L6-4.1LYourMechanic Price$108.55Shop/Dealer Price$132.70 - $172.50
Oxygen Sensor - Rear/Lower/Downstream Replacement for 1984 Chrysler Town & Country L4-2.6LYourMechanic Price$133.42Shop/Dealer Price$163.88 - $222.41
Oxygen Sensor - Rear/Lower/Downstream Replacement for 1994 Mercedes-Benz SL500 V8-5.0LYourMechanic Price$264.03Shop/Dealer Price$338.06 - $502.72
Show example Oxygen Sensor Replacement prices

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