Oxygen Sensor Replacement at your home or office.

Our certified mechanics come to you・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Logo-yelp
CUSTOMERS LOVE US ON YELP
4.5 out of 5 (550 reviews)
Icon-warranty_badge-02
SERVICES BACKED BY OUR
12-Month, 12,000-Mile Warranty
How does YourMechanic work?    
Icon-quote-hiw
Get a quote

Choose from 600+ repair, maintenance, and diagnostic services, backed by our 12-month, 12,000-mile warranty.

Icon-calendar-hiw
Book an appointment

Tell us when to meet you at your home or office. We’ll send one of our vetted, top-rated mechanics.

Icon-fixed-hiw
Get your car fixed

Continue with your day while our mechanic fixes your car onsite. You pay only after the job is done.

Oxygen Sensor Replacement Estimate for Cadillac DeVille

Cadillac DeVille Oxygen Sensor Replacement costs $120 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$94 to $202
Labor: $70 -$80
Parts: $24 -$122
Average Dealer price
$141 to 336
Average Shop price
$113 to 235
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
1986 Cadillac DeVilleV8-4.1LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$106.49Shop/Dealer Price$141.03 - $187.46
1984 Cadillac DeVilleV8-5.7L DieselService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$107.24Shop/Dealer Price$142.08 - $189.16
2003 Cadillac DeVilleV8-4.6LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$133.16Shop/Dealer Price$174.40 - $240.86
1980 Cadillac DeVilleV8-5.7L DieselService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$107.24Shop/Dealer Price$142.04 - $189.09
1981 Cadillac DeVilleV6-4.1LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$107.94Shop/Dealer Price$142.86 - $190.39
1982 Cadillac DeVilleV8-4.1LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$106.49Shop/Dealer Price$141.02 - $187.44
1983 Cadillac DeVilleV8-4.1LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$108.12Shop/Dealer Price$143.21 - $190.97
1980 Cadillac DeVilleV8-5.7L DieselService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$107.24Shop/Dealer Price$142.08 - $189.15
Show example Cadillac DeVille 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.

GET A QUOTE FOR YOUR CAR
Backed by 12-month, 12,000-mile guarantee

Meet some of our expert Cadillac mechanics

Real customer reviews from Cadillac owners like you.

586 reviews
Joshua
22 years of experience
Josh was fantastic. This was the first time I have used this service and as a dealer I will be using this more and more for pre-inspections and repairs going forward and be recommending it to customers as well. It sure beats taking a car to our local mechanic and having to sort out drop off and pick up etc... Steve
1988 CADILLAC DEVILLE - CAR STARTER REPAIR
Want Joshua's expert advice? Ask your question now. Its free!
126 reviews
Tyrone
6 years of experience
Tyrone was great and able to repair my fuel pressure regulator without removing half the parts I was told had to be removed. Big plus for me because I'm very particular about my cars.YES I highly recommend him to anyone
1991 CADILLAC DEVILLE - FUEL PRESSURE REGULATOR REPLACEMENT
Want Tyrone's expert advice? Ask your question now. Its free!
59 reviews
Terry
20 years of experience
I have already suggested this service to a friend. Prices are insanely low compared to other shops! Keep the prices low and you will have a customer for life!
2002 CADILLAC DEVILLE - SPARK PLUG REPLACEMENT
Want Terry's expert advice? Ask your question now. Its free!
49 reviews
Jim
7 years of experience
JIM ARRIVED ON TIME AND WAS VERY HELPFUL. FIVE STARS AND I WILL DEFINITELY USE HIM AGAIN FOR FURTHER NEEDS.
1992 CADILLAC DEVILLE - ENGINE IS MISFIRING INSPECTION
Want Jim's expert advice? Ask your question now. Its free!
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
1986 Cadillac DeVilleV8-4.1LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$106.49Shop/Dealer Price$141.03 - $187.46
1984 Cadillac DeVilleV8-5.7L DieselService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$107.24Shop/Dealer Price$142.08 - $189.16
2003 Cadillac DeVilleV8-4.6LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$133.16Shop/Dealer Price$174.40 - $240.86
1980 Cadillac DeVilleV8-5.7L DieselService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$107.24Shop/Dealer Price$142.04 - $189.09
1981 Cadillac DeVilleV6-4.1LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$107.94Shop/Dealer Price$142.86 - $190.39
1982 Cadillac DeVilleV8-4.1LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$106.49Shop/Dealer Price$141.02 - $187.44
1983 Cadillac DeVilleV8-4.1LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$108.12Shop/Dealer Price$143.21 - $190.97
1980 Cadillac DeVilleV8-5.7L DieselService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$107.24Shop/Dealer Price$142.08 - $189.15
Show example Cadillac DeVille Oxygen Sensor Replacement prices

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com