Oxygen Sensor Replacement Estimate for Subaru Legacy

Subaru Legacy Oxygen Sensor Replacement costs $252 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$142 to $525
Labor: $70 -$136
Parts: $72 -$389
Average Dealer price
$237 to 936
Average Shop price
$173 to 628
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CarServiceYourMechanic PriceShop/Dealer Price
2008 Subaru LegacyH4-2.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$228.21Shop/Dealer Price$280.80 - $389.54
1999 Subaru LegacyH4-2.2LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$232.30Shop/Dealer Price$286.01 - $397.89
1996 Subaru LegacyH4-2.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$219.57Shop/Dealer Price$270.02 - $372.31
2009 Subaru LegacyH4-2.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$225.93Shop/Dealer Price$278.01 - $385.10
1993 Subaru LegacyH4-2.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$147.81Shop/Dealer Price$181.79 - $251.05
1999 Subaru LegacyH4-2.2LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$221.73Shop/Dealer Price$272.68 - $376.56
2011 Subaru LegacyH4-2.5L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$462.06Shop/Dealer Price$573.23 - $857.45
2004 Subaru LegacyH4-2.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$225.93Shop/Dealer Price$278.04 - $385.15
Show example Subaru Legacy Oxygen Sensor Replacement prices

Parts required for a Subaru Legacy Oxygen Sensor Replacement

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432 reviews
Patrick
22 years of experience
Patrick showed up early for our appointments, went over the issues of my car and laid out the options of what I could do afterwards. He is very down to earth and is honest about the problem at hand. My car was having a problem overheating so after inspecting the car and troubleshooting he said that the car might have to require work on it up to $800+ which they could do but he suggested that there were other cheaper options for me to try. I would totally recommend him.
1995 SUBARU LEGACY - THERMOSTAT REPLACEMENT
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274 reviews
Noe
31 years of experience
Noe was so helpful and personable! He showed up 15 minutes before the scheduled time, was very friendly, professional and courteous the entire time and told me exactly what I would need to do to get my car running again as well as the options I had in moving forward in phases. I would highly recommend Noe to any of my friends or family.
2003 SUBARU LEGACY - CAR IS NOT STARTING INSPECTION
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164 reviews
Theodore
11 years of experience
Theodore did a prompt and thorough job. He educated me on my car and gave me the peace of mind I needed. I highly recommend him.
2004 SUBARU LEGACY - 75 POINT SAFETY INSPECTION
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37 reviews
Tyler
22 years of experience
My initial experience with Tyler was definitely a positive one. I'm feeling less concerned about maintaining an older car after speaking with him and discovering just how convenient YourMechanic can be.
2005 SUBARU LEGACY - BRAKES, STEERING AND SUSPENSION INSPECTION
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All about Oxygen Sensor Replacement

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.

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