Subaru GL Oxygen Sensor Replacement at your home or office.

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Oxygen Sensor Replacement Estimate for Subaru GL

Subaru GL Oxygen Sensor Replacement costs $125 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$104 to $197
Labor: $70 -$80
Parts: $34 -$117
Average Dealer price
$160 to 328
Average Shop price
$125 to 230
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Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
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CarServiceEstimateShop/Dealer Price
1987 Subaru GLH4-1.8L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$137.16Shop/Dealer Price$168.47 - $229.73
1981 Subaru GLH4-1.8LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$304.56Shop/Dealer Price$377.79 - $564.65
1989 Subaru GLH4-1.8LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$162.28Shop/Dealer Price$199.89 - $280.01
1984 Subaru GLH4-1.8L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$162.28Shop/Dealer Price$199.91 - $280.05
1985 Subaru GLH4-1.8LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$162.28Shop/Dealer Price$199.88 - $279.99
1980 Subaru GLH4-1.8LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$300.78Shop/Dealer Price$372.99 - $556.96
1987 Subaru GLH4-1.8L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$162.28Shop/Dealer Price$199.96 - $280.12
1987 Subaru GLH4-1.8LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$137.16Shop/Dealer Price$168.54 - $229.84
Show example Subaru GL 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 Subaru mechanics

Real customer reviews from Subaru owners like you.

Theodore

12 years of experience
577 reviews
Theodore
12 years of experience
This was my First time using my mechanic due to the convenience of them coming to you and cost less than a shop. OUr issue was the coolant level dropping in the reservoir tank with no visible leaks. Theodore contacted me when he was on his way and to also let me know traffic was heavier than usual so he would be a little late. What I really liked was the GPS tracking so I could see where he was and how soon he would be arriving. Theodore didn't find any leaks and could not determine what exactly may be causing the problem, but he was very thorough in explaining everything he tested and inspected. Even though he couldn't determine the issue, it gave me peace of mind that everything checked out good including the head gasket which is what I was really worried about. He did mention one scenario that may be causing the coolant level to drop so at this time we will just keep an eye on it. And if something does need to be replaced, I will absolutely be using Your Mechanic again.
2001 SUBARU OUTBACK - COOLANT IS LEAKING - LYNNWOOD, WASHINGTON

Michael

36 years of experience
129 reviews
Michael
36 years of experience
Really nice. Highly recommended
2003 SUBARU OUTBACK - OIL CHANGE - COLUMBUS, OHIO

Jason

5 years of experience
108 reviews
Jason
5 years of experience
Overall good experience, he showed up on tim. He was professional, knowledgeable and timely.
2010 SUBARU FORESTER - BRAKE PADS REPLACEMENT (FRONT) - SAN BRUNO, CALIFORNIA

Charles

30 years of experience
95 reviews
Charles
30 years of experience
Professional and thorough. Charles did a great job.
1992 SUBARU SVX - ALTERNATOR - AUSTIN, TEXAS
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceEstimateShop/Dealer Price
1987 Subaru GLH4-1.8L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$137.16Shop/Dealer Price$168.47 - $229.73
1981 Subaru GLH4-1.8LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$304.56Shop/Dealer Price$377.79 - $564.65
1989 Subaru GLH4-1.8LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$162.28Shop/Dealer Price$199.89 - $280.01
1984 Subaru GLH4-1.8L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$162.28Shop/Dealer Price$199.91 - $280.05
1985 Subaru GLH4-1.8LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$162.28Shop/Dealer Price$199.88 - $279.99
1980 Subaru GLH4-1.8LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$300.78Shop/Dealer Price$372.99 - $556.96
1987 Subaru GLH4-1.8L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$162.28Shop/Dealer Price$199.96 - $280.12
1987 Subaru GLH4-1.8LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$137.16Shop/Dealer Price$168.54 - $229.84
Show example Subaru GL Oxygen Sensor Replacement prices

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