Oxygen Sensor Replacement at your home or office.

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Oxygen Sensor Replacement Estimate for Lexus LX450

Lexus LX450 Oxygen Sensor Replacement costs $207 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$195 to $229
Labor: $70 -$80
Parts: $125 -$149
Average Dealer price
$343 to 391
Average Shop price
$239 to 269
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
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CarServiceYourMechanic PriceShop/Dealer Price
1996 Lexus LX450L6-4.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$230.83Shop/Dealer Price$296.45 - $436.13
1996 Lexus LX450L6-4.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$202.39Shop/Dealer Price$261.02 - $379.46
1997 Lexus LX450L6-4.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$227.86Shop/Dealer Price$292.77 - $430.25
1997 Lexus LX450L6-4.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$202.39Shop/Dealer Price$260.98 - $379.39
Show example Lexus LX450 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 Lexus mechanics

Real customer reviews from Lexus owners like you.

586 reviews
Joshua
22 years of experience
Went above and beyond
1995 LEXUS ES300 - TRANSMISSION FLUID SERVICE
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184 reviews
Tom
37 years of experience
Tom provided excellent service. He inspected the car and wanted to make sure that the battery was good before going any further. He had a generator and a charger in his van which he used for about 30 minutes and tried to start the car a few times. The charger showed the voltage fluctuating between 15V and 13V which he said is not supposed to happen if the battery is good and can take charge. He suspected that the battery is sulfated and needs to be replaced. Since the battery is Interstate and less than a year old and still under warranty he advised getting it replaced first before looking at other things. My first experience with YourMechanic and with Tom has been very positive and I won't hesitate in recommending your services to my friends and colleagues when they have any auto issues.
1994 LEXUS LS400 - CAR IS NOT STARTING INSPECTION
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160 reviews
Carlos
11 years of experience
Carlos is a extremely friendly guy to work with. Im very pleased with his service that he had provided.
2003 LEXUS ES300 - SERPENTINE/DRIVE BELT REPLACEMENT
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105 reviews
Alfredo
16 years of experience
Came on time for the appointment. Very courteous and friendly. Explaining all the repair options of my car. Very professional.
2005 LEXUS ES330 - OIL CHANGE
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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
CarServiceYourMechanic PriceShop/Dealer Price
1996 Lexus LX450L6-4.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$230.83Shop/Dealer Price$296.45 - $436.13
1996 Lexus LX450L6-4.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$202.39Shop/Dealer Price$261.02 - $379.46
1997 Lexus LX450L6-4.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$227.86Shop/Dealer Price$292.77 - $430.25
1997 Lexus LX450L6-4.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$202.39Shop/Dealer Price$260.98 - $379.39
Show example Lexus LX450 Oxygen Sensor Replacement prices

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