Saturn SL1 Oxygen Sensor Replacement at your home or office.

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received a Oxygen Sensor Replacement.
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$133.24 - $198.77

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Average rating from customers who
received a Oxygen Sensor Replacement.
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Oxygen Sensor Replacement Estimate for Saturn SL1

Saturn SL1 Oxygen Sensor Replacement costs $168 on average.

CarServiceEstimateShop/Dealer Price
2002 Saturn SL1L4-1.9LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$243.01Shop/Dealer Price$294.30 - $421.65
2000 Saturn SL1L4-1.9LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$207.21Shop/Dealer Price$249.61 - $350.15
1999 Saturn SL1L4-1.9LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$248.01Shop/Dealer Price$298.64 - $425.49
1991 Saturn SL1L4-1.9LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$246.65Shop/Dealer Price$300.59 - $431.97
2001 Saturn SL1L4-1.9LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$302.55Shop/Dealer Price$367.56 - $538.69
1992 Saturn SL1L4-1.9LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$246.65Shop/Dealer Price$295.75 - $423.51
1994 Saturn SL1L4-1.9LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$251.65Shop/Dealer Price$302.47 - $431.52
1996 Saturn SL1L4-1.9LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$238.01Shop/Dealer Price$288.51 - $415.27
Show example Saturn SL1 Oxygen Sensor Replacement prices

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

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 Saturn mechanics

Real customer reviews from Saturn owners like you.

Excellent Rating


YourMechanic Saturn SL1 Service

Average Rating

4.8/5

Number of Reviews

92

Rating Summary
83
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3
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3

Brandon

16 years of experience
318 reviews
Brandon
16 years of experience
Saturn SL1 - Oxygen Sensor Replacement (Rear/Lower/Downstream) - Chapel Hill, North Carolina
My experience with Brandon was extremely good. His customer service was top notch. I was actually scheduled to get a lot more done than expected but he told me that all my axle needed was some tightening around the bolts because who put them in before didn't put them on correctly. He also gave me a reference of what size bolts I would need to replace it with and he also recommended a few other things for my Saturn. The price was very reasonable. What sets Brandon apart from other mechanics is his customer service, knowledge and his attention to detail. I had a really good experience. I highly recommend him.

Joshua

25 years of experience
709 reviews
Joshua
25 years of experience
Saturn SL1 - R&R shift cable - Vallejo, California

Diego

19 years of experience
419 reviews
Diego
19 years of experience
Saturn SL1 - Car is not starting - Tempe, Arizona
Awesome!

Gary

25 years of experience
226 reviews
Gary
25 years of experience
Saturn SL1 - Starter - Benicia, California
Gary is excellent! He came prepared in case the problem was the ignition switch, and not the starter (as I said it was). He did everything he said he would do and did it efficiently & and told me exactly what he was doing, so I learned a bit as well. I couldn't have asked for more. I don't know what you're paying him, but it should be more. It's too rare that you get exactly what you bargained for. With him, you do.

Excellent Rating


YourMechanic Saturn SL1 Service

Average Rating

4.8/5

Number of Reviews

92

Rating Summary
83
6
0
0
3
83
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3
Red-stars EXCELLENT RATING ON
Number of Saturn SL1 services completed
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services done by our mechanics
TOTAL NUMBER OF EXPERT Saturn MECHANICS
500+
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