Oxygen Sensor Replacement Estimate for Infiniti Q45

Infiniti Q45 Oxygen Sensor Replacement costs $169 on average. Following is a breakdown of the labor and parts estimates.

Skip the repair shop - our mechanics come to you
YourMechanic Price
$135 to $295
Labor: $70 -$168
Parts: $65 -$127
Average Dealer price
$223 to 450
Average Shop price
$164 to 334
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
1992 Infiniti Q45V8-4.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$153.00Shop/Dealer Price$199.16 - $280.47
1996 Infiniti Q45V8-4.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$204.94Shop/Dealer Price$264.20 - $384.55
1990 Infiniti Q45V8-4.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$151.46Shop/Dealer Price$197.28 - $277.47
2000 Infiniti Q45V8-4.1LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$152.74Shop/Dealer Price$198.91 - $280.08
1991 Infiniti Q45V8-4.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$153.00Shop/Dealer Price$199.18 - $280.50
2003 Infiniti Q45V8-4.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$160.78Shop/Dealer Price$208.88 - $296.02
1994 Infiniti Q45V8-4.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$140.35Shop/Dealer Price$183.50 - $255.43
2004 Infiniti Q45V8-4.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$197.30Shop/Dealer Price$254.65 - $369.27
Show example Infiniti Q45 Oxygen Sensor Replacement prices

Parts required for a Infiniti Q45 Oxygen Sensor Replacement

Meet some of our expert Infiniti mechanics

Real customer reviews from Infiniti owners like you.

236 reviews
Jose
12 years of experience
Jose went above and beyond my expectation. We wanted to buy a car out of state and needed an extra set of eyes to confirm that this was the car for us. He listened to my concerns prior to inspecting the car and gave me a very thorough run down of the car after his inspection. The man knows his stuff and did a very thorough job with his inspection.
2009 INFINITI EX35 - PRE-PURCHASE CAR INSPECTION
Want Jose's expert advice? Ask your question now. Its free!
192 reviews
Rocco
17 years of experience
Have had my cars services by Infiniti dealerships for over 10 years. This is the first time I have used another option. Something about being overcharged and being treated like a number lately by the delerships I don't like. Rocco arrived few minutes early, super polite guy, knows his stuff, no pressure, told me what I needed and when I needed it. Got down to business and got job done effortlessly while explaining the process. Left my garage clean, no spills definitely a five star. This is the first review I have written for anything and it's a five star. Excellent concept great service!!
2005 INFINITI FX35 - OIL CHANGE
Want Rocco's expert advice? Ask your question now. Its free!
174 reviews
Scott
31 years of experience
Another great experience with Scott! He arrived early, was polite as always and completed the work on the time. Not to mention, I saved $600 on the radiator replacement by purchasing parts on my own and using Your Mechanic!!
2006 INFINITI QX56 - CAR RADIATOR REPLACEMENT
Want Scott's expert advice? Ask your question now. Its free!
129 reviews
David
23 years of experience
David was great and we were very happy with his service. He showed up 15 minutes early which was very impressive. Was clean and thorough and explained everything in detail. I will definitely have some other services done on our cars and will request David do the work.
2001 INFINITI QX4 - BRAKE PADS REPLACEMENT (FRONT)
Want David's expert advice? Ask your question now. Its free!

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.

Oxygen Sensor Replacement Estimates for Popular Infiniti Models