Lexus IS300 Oxygen Sensor Replacement at your home or office.

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$371.88 - $450.77

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Average rating from customers who
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Oxygen Sensor Replacement Estimate for Lexus IS300

Lexus IS300 Oxygen Sensor Replacement costs $404 on average.

CarServiceEstimateShop/Dealer Price
2003 Lexus IS300L6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$759.05Shop/Dealer Price$954.88 - $1473.89
2005 Lexus IS300L6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$759.05Shop/Dealer Price$955.02 - $1474.12
2004 Lexus IS300L6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$765.55Shop/Dealer Price$959.88 - $1477.75
2002 Lexus IS300L6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$781.55Shop/Dealer Price$983.51 - $1507.11
2002 Lexus IS300L6-3.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$678.77Shop/Dealer Price$856.18 - $1328.86
2001 Lexus IS300L6-3.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$759.05Shop/Dealer Price$952.24 - $1469.25
2003 Lexus IS300L6-3.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$678.77Shop/Dealer Price$847.72 - $1314.05
2001 Lexus IS300L6-3.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$678.77Shop/Dealer Price$852.12 - $1321.76
Show example Lexus IS300 Oxygen Sensor Replacement prices

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 Lexus mechanics

Real customer reviews from Lexus owners like you.

Excellent Rating


YourMechanic Lexus IS300 Oxygen Sensor Replacement Service

Average Rating

5/5

Number of Reviews

7

Rating Summary
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7
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Chris

19 years of experience
1240 reviews
Chris
19 years of experience
Chris was great, he helped me with my Lexus and changed the bank 2 oxygen sensor which was very difficult to get to because you had to move the seat back. He was fast and courteous and I would definitely recommend him to anyone!
2004 LEXUS IS300 - OXYGEN SENSOR REPLACEMENT (REAR/LOWER/DOWNSTREAM) - NEWPORT BEACH, CALIFORNIA

Isai

24 years of experience
224 reviews
Isai
24 years of experience
Great experience. He took the time to explain everything he was doing to me so that I could understand. Very knowledgable and highly recommended! I am so pleased with the work he did, the speed at which he did it and the way he conducted himself. Nothing but positive things to say about him and my experience with this company.
2002 LEXUS IS300 - OXYGEN SENSOR REPLACEMENT (FRONT/UPPER/UPSTREAM) - SAN ANTONIO, TEXAS

Grzegorz

38 years of experience
440 reviews
Grzegorz
38 years of experience
Grzegorz is awesome!! He explains things well. Really considers what’s necessary, and does the right things that your car needs, without doing unnecessary repairs. He takes time to answers questions and will look at things appropriately. I would definitely recommend him to others!
2003 LEXUS IS300 - OXYGEN SENSOR REPLACEMENT (REAR/LOWER/DOWNSTREAM) - BELMONT, CALIFORNIA

Khoa

17 years of experience
255 reviews
Khoa
17 years of experience
he was awesome. know what he's doing, polite, got the job done even though it was tricky.
2001 LEXUS IS300 - OXYGEN SENSOR REPLACEMENT (FRONT/UPPER/UPSTREAM) - SAN MATEO, CALIFORNIA

Excellent Rating


YourMechanic Lexus IS300 Oxygen Sensor Replacement Service

Average Rating

5/5

Number of Reviews

7

Rating Summary
7
0
0
0
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7
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Red-stars EXCELLENT RATING ON
Number of Lexus IS300 Oxygen Sensor Replacement services completed
77+
services done by our mechanics
TOTAL NUMBER OF EXPERT Lexus MECHANICS
700+
experts on our platform

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