What is the Oxygen Sensor all about?
\n\n
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.
\n\n
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.
\n\n
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.
\n
","articleDesc2":"
When replacing the oxygen sensor remember:
\n\n
\n- 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.
\n- New vehicles require specific oxygen sensors, and not the universal sensors that were common prior to 1996.
\n
\n\n
How it's done:
\n\n
\n- Scan the computer in the car for codes.
\n- Inspect for vacuum leaks and holes in the exhaust system.
\n- Remove and replace the oxygen sensor if it is bad.
\n- Check electrical connections.
\n- Check for proper operation of oxygen sensors.
\n- Clear diagnostic codes.
\n- Test drive car.
\n
\n\n
Our recommendation:
\n\n
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.
\n\n
What common symptoms indicate you may need to replace the Oxygen Sensor?
\n\n
\n- Check Engine light is on.
\n- Car is getting poor gas mileage.
\n- Emission test fails.
\n
\n\n
How important is replacing the oxygen sensor?
\n\n
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\u2019s 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.
\n
"},"reviewsAndRatings":{"reviewsData":{"make":null,"model":null,"jid":180,"city_id":null,"state_id":null,"review_count":10,"mechanics":[{"id":731660,"name":"Chris","login":"cgauthier","mech_location":"Mesquite, TX","experience":18,"avatar_url":"https://res.cloudinary.com/yourmechanic/image/upload/dpr_auto,f_auto,g_face,q_auto/v1/mechanic/avatar_images/11731705364964265230","avatar_path":"mechanic/avatar_images/11731705364964265230","profile_url":"/pro/cgauthier","average_rating":5,"ratings_count":492,"reviews":[{"rating":5,"content":"Great customer service. Thorough inspection of my vehicle. Very professional. Great work.","author":"Lynn","review_date":"2020-12-13T04:45:57-08:00","service_location":"Stafford, Texas","year":"2010","make":"Jeep","model":"Liberty","engine":"V6-3.7L","car":"2010 Jeep Liberty V6-3.7L","job":"Oxygen Sensor Replacement (Rear/Lower/Downstream)","job_id":180}]},{"id":799307,"name":"Michael","login":"mstraub","mech_location":"Woodstock, GA","experience":16,"avatar_url":"https://res.cloudinary.com/yourmechanic/image/upload/dpr_auto,f_auto,g_face,q_auto/v1/mechanic/avatar_images/11076174490793092199","avatar_path":"mechanic/avatar_images/11076174490793092199","profile_url":"/pro/mstraub","average_rating":5,"ratings_count":606,"reviews":[{"rating":5,"content":"Very professional. Called ahead to let me know he could come out earlier if it was ok. Got work done quickly, left no mess and clean up behind.","author":"Jane","review_date":"2018-06-11T00:34:40-07:00","service_location":"Marietta, Georgia","year":"2006","make":"Chrysler","model":"Pacifica","engine":"V6-3.5L","car":"2006 Chrysler Pacifica V6-3.5L","job":"Oxygen Sensor Replacement (Rear/Lower/Downstream)","job_id":180}]},{"id":706001,"name":"Jonathan","login":"jpadua","mech_location":"New Port Richey, FL","experience":35,"avatar_url":"https://res.cloudinary.com/yourmechanic/image/upload/dpr_auto,f_auto,g_face,q_auto/v1/mechanic/avatar_images/1549381833554793977","avatar_path":"mechanic/avatar_images/1549381833554793977","profile_url":"/pro/jpadua","average_rating":5,"ratings_count":484,"reviews":[{"rating":5,"content":"Jonathan was awesome! He was prompt and efficient. He explained everything that he was doing and showed me the readouts on his tablet. I asked a million questions and he answered every one. I was so pleased with the service that he is going to come back and do my brakes!","author":"pamela","review_date":"2018-08-16T19:27:55-07:00","service_location":"Tampa, Florida","year":"2008","make":"Ford","model":"Escape","engine":"L4-2.3L Hybrid","car":"2008 Ford Escape L4-2.3L Hybrid","job":"Oxygen Sensor Replacement (Rear/Lower/Downstream)","job_id":180}]},{"id":1033822,"name":"Sidney","login":"ssawyer","mech_location":"Thornton, CO","experience":14,"avatar_url":"https://res.cloudinary.com/yourmechanic/image/upload/dpr_auto,f_auto,g_face,q_auto/v1/mechanic/avatar_images/6302788759178726541","avatar_path":"mechanic/avatar_images/6302788759178726541","profile_url":"/pro/ssawyer","average_rating":5,"ratings_count":121,"reviews":[{"rating":4,"content":"Took care of initial problems with good explanations and pointed out other repair needs down the line.","author":"Clyde","review_date":"2018-05-12T16:27:17-07:00","service_location":"Thornton, Colorado","year":"2004","make":"Nissan","model":"Xterra","engine":"V6-3.3L","car":"2004 Nissan Xterra V6-3.3L","job":"Oxygen Sensor Replacement (Front/Upper/Upstream)","job_id":180}]},{"id":362314,"name":"Joel","login":"jberkeley","mech_location":"Jacksonville, FL","experience":21,"avatar_url":"https://res.cloudinary.com/yourmechanic/image/upload/dpr_auto,f_auto,g_face,q_auto/v1/mechanic/avatar_images/3134437430512650305","avatar_path":"mechanic/avatar_images/3134437430512650305","profile_url":"/pro/jberkeley","average_rating":5,"ratings_count":987,"reviews":[{"rating":3,"content":"Joel was great, however I do believe the labor amount paid should have been reduced since the the amount of actual labor was greatly reduced!","author":"James","review_date":"2020-11-20T20:20:24-08:00","service_location":"Jacksonville, Florida","year":"2004","make":"Toyota","model":"4Runner","engine":"V6-4.0L","car":"2004 Toyota 4Runner V6-4.0L","job":"Oxygen Sensor Replacement (Front/Upper/Upstream)","job_id":180}]},{"id":692089,"name":"Keith","login":"keith168","mech_location":"Lake Alfred, FL","experience":18,"avatar_url":"https://res.cloudinary.com/yourmechanic/image/upload/dpr_auto,f_auto,g_face,q_auto/v1/mechanic/avatar_images/17698559621006799840","avatar_path":"mechanic/avatar_images/17698559621006799840","profile_url":"/pro/keith168","average_rating":5,"ratings_count":372,"reviews":[{"rating":5,"content":"Absolutely fantastic. Professional and knowledgeable next time i need a mechanic I want him back.","author":"Rick","review_date":"2017-07-25T19:32:50-07:00","service_location":"Kissimmee, Florida","year":"2008","make":"Dodge","model":"Durango","engine":"V6-3.7L","car":"2008 Dodge Durango V6-3.7L","job":"Oxygen Sensor Replacement (Front/Upper/Upstream, Rear/Lower/Downstream)","job_id":180}]},{"id":1776434,"name":"Jimmi","login":"jimmiphillips","mech_location":"Orlando, FL","experience":27,"avatar_url":"https://res.cloudinary.com/yourmechanic/image/upload/dpr_auto,f_auto,g_face,q_auto/v1/mechanic/avatar_images/4575233818700179323","avatar_path":"mechanic/avatar_images/4575233818700179323","profile_url":"/pro/jimmiphillips","average_rating":5,"ratings_count":232,"reviews":[{"rating":5,"content":"Jimmi is a outstanding Mechanic that went above and beyond with his knowledge and service for my vehicle.\nhighly recommend, thank you kind sir.","author":"rolson","review_date":"2021-07-14T04:39:56-07:00","service_location":"Altamonte Springs, Florida","year":"2014","make":"Toyota","model":"Corolla","engine":"L4-1.8L","car":"2014 Toyota Corolla L4-1.8L","job":"Oxygen Sensor Replacement (Front/Upper/Upstream)","job_id":180}]},{"id":1211371,"name":"Son","login":"snguyen","mech_location":"Morrow, GA","experience":25,"avatar_url":"https://res.cloudinary.com/yourmechanic/image/upload/dpr_auto,f_auto,g_face,q_auto/v1/mechanic/avatar_images/15309369791439392548","avatar_path":"mechanic/avatar_images/15309369791439392548","profile_url":"/pro/snguyen","average_rating":5,"ratings_count":52,"reviews":[{"rating":5,"content":"Great mechanic. Very friendly and knows what he is doing. Will definitely use him again! Thanks Son!","author":"Dustin","review_date":"2018-07-08T17:31:10-07:00","service_location":"Smyrna, Georgia","year":"2012","make":"Lincoln","model":"MKZ","engine":"L4-2.5L Hybrid","car":"2012 Lincoln MKZ L4-2.5L Hybrid","job":"Oxygen Sensor Replacement (Front/Upper/Upstream)","job_id":180}]},{"id":1231917,"name":"Kinder","login":"jkgise","mech_location":"Douglasville, GA","experience":21,"avatar_url":"https://res.cloudinary.com/yourmechanic/image/upload/dpr_auto,f_auto,g_face,q_auto/v1/mechanic/avatar_images/18324459456869730483","avatar_path":"mechanic/avatar_images/18324459456869730483","profile_url":"/pro/jkgise","average_rating":5,"ratings_count":58,"reviews":[{"rating":5,"content":"Kinder was very professional and put my mind at ease. He had the special tools needed to do the job and he was explaining how to do it to me. Very thorough!","author":"James","review_date":"2018-05-24T13:17:47-07:00","service_location":"Douglasville, Georgia","year":"1996","make":"Chevrolet","model":"S10","engine":"L4-2.2L","car":"1996 Chevrolet S10 L4-2.2L","job":"Oxygen Sensor Replacement (Front/Upper/Upstream)","job_id":180}]},{"id":352486,"name":"Jose","login":"jdelacruz","mech_location":"Hollywood, FL","experience":16,"avatar_url":"https://res.cloudinary.com/yourmechanic/image/upload/dpr_auto,f_auto,g_face,q_auto/v1/mechanic/avatar_images/1428362898433539734","avatar_path":"mechanic/avatar_images/1428362898433539734","profile_url":"/pro/jdelacruz","average_rating":5,"ratings_count":324,"reviews":[{"rating":4,"content":"Proffesional friendly and repaired within budjet. Good advisor also.","author":"Lincoln","review_date":"2020-02-07T11:01:03-08:00","service_location":"Fort Lauderdale, Florida","year":"2002","make":"Ford","model":"Focus","engine":"L4-2.0L","car":"2002 Ford Focus L4-2.0L","job":"Oxygen Sensor Replacement (Front/Upper/Upstream, Rear/Lower/Downstream)","job_id":180}]}],"hide_description":true},"aggregateRating":{"jid":180,"extrapolated_service_count":17017,"rating_count":1547,"rating":"4.9","count_1_star":23,"count_2_star":10,"count_3_star":10,"count_4_star":47,"count_5_star":1457},"linkToReviewsPage":"/reviews/?mktg_jid=180&city=19446","cityLinks":[{"title":"Oxygen Sensor Replacement In Lake Elsinore, CA","url":"/services/oxygen-sensor-replacement/?city=lake-elsinore-ca"},{"title":"Oxygen Sensor Replacement In Satellite Beach, FL","url":"/services/oxygen-sensor-replacement/?city=satellite-beach-fl"},{"title":"Oxygen Sensor Replacement In Suwanee, GA","url":"/services/oxygen-sensor-replacement/?city=suwanee-ga"},{"title":"Oxygen Sensor Replacement In Middleton, ID","url":"/services/oxygen-sensor-replacement/?city=middleton-id"},{"title":"Oxygen Sensor Replacement In Wauconda, IL","url":"/services/oxygen-sensor-replacement/?city=wauconda-il"},{"title":"Oxygen Sensor Replacement In Medford, MA","url":"/services/oxygen-sensor-replacement/?city=medford-ma"},{"title":"Oxygen Sensor Replacement In Cameron, NC","url":"/services/oxygen-sensor-replacement/?city=cameron-nc"},{"title":"Oxygen Sensor Replacement In Emerson, NJ","url":"/services/oxygen-sensor-replacement/?city=emerson-nj"},{"title":"Oxygen Sensor Replacement In Matawan, NJ","url":"/services/oxygen-sensor-replacement/?city=matawan-nj"},{"title":"Oxygen Sensor Replacement In College Point, NY","url":"/services/oxygen-sensor-replacement/?city=college-point-ny"},{"title":"Oxygen Sensor Replacement In Dayton, OH","url":"/services/oxygen-sensor-replacement/?city=dayton-oh"},{"title":"Oxygen Sensor Replacement In Glenpool, OK","url":"/services/oxygen-sensor-replacement/?city=glenpool-ok"},{"title":"Oxygen Sensor Replacement In Troutdale, OR","url":"/services/oxygen-sensor-replacement/?city=troutdale-or"},{"title":"Oxygen Sensor Replacement In Duncanville, TX","url":"/services/oxygen-sensor-replacement/?city=duncanville-tx"},{"title":"Oxygen Sensor Replacement In Richmond, VA","url":"/services/oxygen-sensor-replacement/?city=richmond-va"}]},"repairPricingTableData":{"pricingData":[{"car":"2012|Volkswagen|Touareg|V6-3.0L Turbo Hybrid","labor":3600,"parts":92854,"url":"/cars/0/1","estimate":"$1024","partsCost":"$928.54","laborCost":"$94.99","savings":"1%","averageDealerPrice":"$1036.04"},{"car":"2016|Jeep|Renegade|L4-1.4L Turbo","labor":3600,"parts":20473,"url":"/cars/0/1","estimate":"$300","partsCost":"$204.73","laborCost":"$94.99","savings":"4%","averageDealerPrice":"$312.23"},{"car":"2012|Dodge|Challenger|V6-3.6L","labor":3600,"parts":20076,"url":"/cars/0/1","estimate":"$296","partsCost":"$200.76","laborCost":"$94.99","savings":"4%","averageDealerPrice":"$308.26"},{"car":"2013|BMW|X3|L4-2.0L Turbo","labor":3600,"parts":49873,"url":"/cars/0/1","estimate":"$594","partsCost":"$498.73","laborCost":"$94.99","savings":"2%","averageDealerPrice":"$606.23"},{"car":"2013|BMW|650i Gran Coupe|V8-4.4L Turbo","labor":12600,"parts":99746,"url":"/cars/0/1","estimate":"$1330","partsCost":"$997.46","laborCost":"$332.46","savings":"3%","averageDealerPrice":"$1373.71"},{"car":"2015|Porsche|Panamera|V8-4.8L","labor":9720,"parts":59696,"url":"/cars/0/1","estimate":"$853","partsCost":"$596.96","laborCost":"$256.47","savings":"3%","averageDealerPrice":"$887.21"}],"sidebarTitle":"Need a new Oxygen Sensor?","sidebarBody":"Get your Oxygen Sensor changed by a top-rated mechanic at the convenience of your home or office."},"seoData":{"metaData":{"service":{"itemType":"https://schema.org/Service","metaProps":[{"itemProp":"url","content":"//m.whoreclub.com/services/oxygen-sensor-replacement/?city=mundelein-il"},{"itemProp":"areaServed","content":"Mundelein, IL"},{"itemProp":"serviceType","content":"Mobile Car Repair"}]},"organization":{"itemType":"https://schema.org/Organization","metaProps":[{"itemProp":"name","content":"YourMechanic"},{"itemProp":"legalname","content":"YourMechanic"},{"itemProp":"logo","content":"//m.whoreclub.com/assets/ym-logo-straight.png"},{"itemProp":"telephone","content":"1 (855) 347-2779"},{"itemProp":"url","content":"//m.whoreclub.com"},{"itemProp":"areaServed","content":"Mundelein, IL"},{"itemProp":"address","content":"Mundelein, IL"}]}}},"bookEngineState":{"quote":{"jobs":[{"id":180,"description":"Oxygen Sensor Replacement","choices":[false,false]}]}},"serviceMerchandiserUI":{"heading":"Oxygen Sensor Replacement at your home or office in Mundelein.","isDiagnosticJob":false,"costRangeMin":12380,"costRangeMax":94423,"serviceRating":4.9,"totalRatings":1547,"benefits":[{"title":"Online Booking"},{"title":"Mechanic comes to you"},{"title":"12-month / 12k-mile warranty"},{"title":"Free 50 point safety inspection"}],"notFixedOnMobile":false,"jobTitle":"Oxygen Sensor Replacement","cityName":"Mundelein","seoFriendlyHeading":"","seoFriendlyTitle":"","ctaTextTitle":"","navBarCities":[{"id":9232,"name":"Greenville","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/greenville-sc","city_state":"Greenville, SC"},{"id":25324,"name":"Pasadena","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/pasadena-tx","city_state":"Pasadena, TX"},{"id":10263,"name":"Orlando","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/orlando-fl","city_state":"Orlando, FL"},{"id":8635,"name":"Charlotte","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/charlotte-nc","city_state":"Charlotte, NC"},{"id":19657,"name":"Chicago","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/chicago-il","city_state":"Chicago, IL"},{"id":25545,"name":"San Antonio","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/san-antonio-tx","city_state":"San Antonio, TX"},{"id":24056,"name":"Austin","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/austin-tx","city_state":"Austin, TX"},{"id":9514,"name":"Atlanta","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/atlanta-ga","city_state":"Atlanta, GA"},{"id":10370,"name":"Tampa","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/tampa-fl","city_state":"Tampa, FL"},{"id":6106,"name":"Washington","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/washington-dc","city_state":"Washington, DC"},{"id":27890,"name":"Los Angeles","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/los-angeles-ca","city_state":"Los Angeles, CA"},{"id":27167,"name":"Phoenix","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/phoenix-az","city_state":"Phoenix, AZ"}]}}" data-trace="true" style="display: none">