Oxygen Sensor Replacement at your home or office.

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Oxygen Sensor Replacement Estimate for Lexus SC430

Lexus SC430 Oxygen Sensor Replacement costs $218 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$195 to $258
Labor: $70 -$80
Parts: $125 -$178
Average Dealer price
$343 to 448
Average Shop price
$239 to 305
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
2008 Lexus SC430V8-4.3LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$261.96Shop/Dealer Price$335.36 - $498.40
2006 Lexus SC430V8-4.3LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$258.41Shop/Dealer Price$331.05 - $491.50
2010 Lexus SC430V8-4.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$202.39Shop/Dealer Price$260.94 - $379.32
2002 Lexus SC430V8-4.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$202.39Shop/Dealer Price$260.98 - $379.39
2003 Lexus SC430V8-4.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$204.89Shop/Dealer Price$264.04 - $384.28
2006 Lexus SC430V8-4.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$204.89Shop/Dealer Price$264.01 - $384.23
2004 Lexus SC430V8-4.3LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$244.61Shop/Dealer Price$313.82 - $463.95
2004 Lexus SC430V8-4.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$202.39Shop/Dealer Price$261.01 - $379.45
Show example Lexus SC430 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.

341 reviews
Honorio
14 years of experience
honorio was efficient and friendly.
2004 LEXUS GX470 - CAR BATTERY REPLACEMENT
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87 reviews
Chris
21 years of experience
Chris is very knowledgeable mechanically, professional, friendly and a Master Automotive Technician. He is also very courteous and a pleasant person to talk to. He changed my brakes and rotors and knew exactly what he was doing and did it quickly. He inspected my car and noticed other areas that should be addressed. I was so impressed with his professional skills that I had him book another appointment with me for next week to repair additional areas of concern I had bought the Lexus as a pre-owned car and saw the type of work the Lexus Technicians did vs the work that Chris did. Simple things such as lubing bolts before you put them on (which Lexus Technicians did not) or adjusting the parking brake which was not on the original order. I've always headed the saying that "It's up to you to choose what you do in life, but always strive to be the best at what you do." Chris has definitely done that.
2005 LEXUS RX330 - BRAKE PADS REPLACEMENT (FRONT, REAR)
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70 reviews
Michael
17 years of experience
Michael has worked on my car and my wife's car and has done a terrific job. He knows what he's doing. I have been recommending him to family members.
2002 LEXUS SC430 - VALVE COVER GASKET REPLACEMENT
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20 reviews
William
6 years of experience
William replaced the alternator in our Lexus RX 350. While he said his expertise was not in Lexus, but Nissan, he knew what he was doing and replaced the alternator properly. Probably saved me over $200. He was polite, prompt and knowledgeable.
2008 LEXUS RX350 - ALTERNATOR REPAIR
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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
2008 Lexus SC430V8-4.3LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$261.96Shop/Dealer Price$335.36 - $498.40
2006 Lexus SC430V8-4.3LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$258.41Shop/Dealer Price$331.05 - $491.50
2010 Lexus SC430V8-4.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$202.39Shop/Dealer Price$260.94 - $379.32
2002 Lexus SC430V8-4.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$202.39Shop/Dealer Price$260.98 - $379.39
2003 Lexus SC430V8-4.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$204.89Shop/Dealer Price$264.04 - $384.28
2006 Lexus SC430V8-4.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$204.89Shop/Dealer Price$264.01 - $384.23
2004 Lexus SC430V8-4.3LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$244.61Shop/Dealer Price$313.82 - $463.95
2004 Lexus SC430V8-4.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$202.39Shop/Dealer Price$261.01 - $379.45
Show example Lexus SC430 Oxygen Sensor Replacement prices

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