Oxygen Sensor Replacement Estimate for Lexus LS400

Lexus LS400 Oxygen Sensor Replacement costs $231 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$167 to $354
Labor: $70 -$216
Parts: $97 -$138
Average Dealer price
$287 to 527
Average Shop price
$205 to 398
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CarServiceYourMechanic PriceShop/Dealer Price
1990 Lexus LS400V8-4.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$294.05Shop/Dealer Price$388.92 - $519.17
1991 Lexus LS400V8-4.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$173.11Shop/Dealer Price$224.42 - $320.89
1999 Lexus LS400V8-4.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$202.39Shop/Dealer Price$260.94 - $379.32
1995 Lexus LS400V8-4.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$251.39Shop/Dealer Price$327.82 - $459.61
1997 Lexus LS400V8-4.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$253.89Shop/Dealer Price$330.84 - $464.43
1994 Lexus LS400V8-4.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$219.16Shop/Dealer Price$281.85 - $412.77
1992 Lexus LS400V8-4.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$294.54Shop/Dealer Price$389.94 - $520.85
1998 Lexus LS400V8-4.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$251.39Shop/Dealer Price$327.88 - $459.72
Show example Lexus LS400 Oxygen Sensor Replacement prices
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Parts required for a Lexus LS400 Oxygen Sensor Replacement

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471 reviews
Peter
38 years of experience
Peter does great work
1998 LEXUS LS400 - BALL JOINT FRONT REPLACEMENT (LOWER LEFT)
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197 reviews
Jeff
22 years of experience
Great mechanic
1992 LEXUS LS400 - TIMING INSPECTION
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174 reviews
Scott
31 years of experience
Great works as usual I won't let anyone else touch my car anymore :)
1996 LEXUS LS400 - OTHER INSPECTIONS
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46 reviews
David
11 years of experience
Showed me exactly the problem
1992 LEXUS LS400 - CAR IS OVERHEATING INSPECTION
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All about Oxygen Sensor Replacement

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.

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