How to Replace an Oxygen (O2) Sensor 

Firestone charged me like 370 to do this (4 years ago) and i had seen a video similar to this AFTER. Ever since then i have been able to do all my repairs on my vehicle thanks to youtubers like you! U guys are the real heroes out here, an o2 sensor for my car brand new is only 40 bucks. I could have saved 330 dollars had i been smarter at that age.

Good instruction and good lighting, God bless you my friend...

Okay for whoever reads my comment, this is important when replacing an O2 sensor. You HAVE to make sure the wires are as straight as possible and not twisted like this guy left them, the 02 sensor will probably still be "bad" if they are. And after hand tightening it then turn it a couple times with a socket to make sure it's tight but don't over tighten and make sure not to bend the 02 sensor or dent it or anything because they are very delicate and won't work properly if you do.

One of the best instruction video's I've seen. Very clear. Thanks, I now know what to expect with labour costs.

Best Tutorial Video Intro Award! - This is the best, most concise and accurate tutorial video INTRO I have EVER seen on youtube. And in 2012 - you were so far ahead of the curve. Damn!

I've been looking at O2 sensor videos and yours is the most helpful by far! Thanks so much!

thanks! this was the easiest one to understand, plus you explained the anti-seise & penetrating oil. MUCH appreciated!

Bang up video! Thank you for taking the time and helping us out!

You splain that,so clear.Im so happy with you way to show us to do this job.God bless you,my friend.Thanks so much.

We agree. Good stuff Ben!

Good video! You are so right about the hardest part of this job being getting the sensor out...In 2011 on a 2000 Toyota Tundra I needed to replace the exhaust manifold on the passenger side because neither myself nor a couple different muffler shops could get the o2 sensor out! It was a real pain! I'm doing the other side in the tomorrow.

Worked great for my 2004 Ford Explorer. Thanks for the help!

This was an excellent video on how to replace an o2 sensor, thank you!!

thank you, this video helped a lot. life saver and money saver.

Nice video bro, short and to the point! thanks!

Helpful. Thanxx!!!

TY. The vidoe was 100% spot on. The disconnect was the hardest part because we are blind to the upper part of te the trans. Thank you so much for making this youtube vid. I t eased my frustration a little. lol ^-^

Straightforward instruction with good production. Well done. Only thing I would change is I would mention what model car it is you are working on, because I liek cars. I'll check out the other vids in this series for sure.

Thanks man, that will save me a ton of cash. Very thankful for this thread.

Thanks man. Appreciate the video help honestly.

Good concise, instructional video. Thanks. I'd like to know what the recommended installation torque values would be for most O2 sensors.

thank you, for your supporting. actually it work for me, I have kia Sedona 2005. the check light engine is one. and I just do it myself. and now it perfect, everything is good.

Thanks! I appreciate your advice.

Thanks for the video it’s really helping me , don’t know anything about Mechanics but I want get into it because recently bought my Second car and i don’t want mess anything up with the car (1991 Pontiac firebird formula) so I’ve been doing my research :)

great video it was worth the look and makes it ease for me. There's nothing like saving 200.00 dollars. Thanks

Clean and to the point!

Thanks! I owe you $200!! BTW a 7/8" open end wrench worked fine for me.

Good advice i changed 2- on a 95 Cadillac Concours/Northstar Engine,I have researched that Buicks and Olsmobile also have these engine's and man the ones by the firewall are crazy,,I had to use 2- 10 inch extender adapters with a woble drive end and a 7/8 crowsfoot,wow! never thouhjt a car could have so many specialty tools to fix it ,so much for that thanks again for your tips and advice.

You did an excellent video. Thank you very much. But should all sensors be replaced when one goes out?

Wonderful Job!!!

Nice job,thanks for a video

hey, thanks. very short and informative videos are always appreciated. i bought an 02 f150 xlt with 160k miles. im replacing the boots and plugs and also the fuel filter tomorrow. should i also just replace the O2 sensor while im at it ?

thank you. you made it look simple and not complicated. =)

Very informative. Would love to know how you worked out it was the O2 Sensor. We have a 2006 Ford CVPI and would love to see how you would change all four of them.

Thank you for the video, - Does the truck need to be serviced or re configured after replacing the sensor?

Lovely video - anticipates problems such as non-OEM wiring. I am assuming that bank 2 O2 sensor is on the drivers side. Tkx

Thanks Ben! That was super helpful. Mine is just hanging off. Because of all the potholes in my county, the underside of my car is taking a beating. Like you said, O2 sensors live in a horrible environment. I wonder if I can just clip it back on so it's not hanging? Anyway, thanks again.

Thanks for your contribution Ben. I would only add this: Since the "O2 Sensor is one of the most misdiagnosed problems in a car;" and "there are lots of (other) parts that can go bad and cause..." the scan tool to throw an "O2 Sensor" problem Code, it sure would have helped the average "Do It Yourselfer" to know what those other problems could be. That way the DIY-fer watching your video can first test for those other problems to try and eliminate them, before going out and buying an O2 sensor which can be very expensive if you want to stick to OEM parts. For example: My gangster VW Dealership in Bethesda, Maryland, gave me a written price quote of $268.95 just for the O2 Sensor for my 2008 VW Jetta! Their "Labor" cost for the installation will probably be about another $300. Highway robbery! Some of the possible problems should include: a Vacuum hose check. An old, brittle, porous or cracked Vacuum hose (line) will cause extra O2 to be pulled into the exhaust manifold, thereby causing the Sensor to throw out a correct reading of "O2 Sensor problem." But, the problem in this example IS NOT the sensor! The problem is the high oxygen to Fuel ratio. The sensor is just doing it's job telling you there's too much O2 coming into the system causing it to run "lean." But, unfortunately reported as "O2 Sensor problem," when in fact the actual problem IS the Vacuum hose/line which needs to be changed. Other problems which will cause an "O2 Sensor problem reading include a defective heater wire (Check the resistance on the heater wire with an Ohm Tester (a.k.a. Digital Volto-meter). A low resistance reading on the heater wire means it's defective). Also, a loose or missing gas cap can also allow extra oxygen into the gas tank which will mix with the gas and will throw off the sensor which is also pulling in oxygen from the ambient air at the neck of the sensor. That ambient air intake, combined with the extra oxygen already mixed in with the gas, will cause a much higher O2 reading by the sensor and will trigger the check engine light. Upon scanning, a good scan tool will throw an O2 sensor problem code. But, the true problem is the loose or missing gas cap.

Great video, al i would add is the prep for disconnecting the sensors; like disconnecting the negative terminal on your battery before you start ( and writing down your radio stations if you dont have them memorized lol. And what you do after it is all done to test your work out.

Hi Boss I like this video I would like to know the location of Bank1 and Bank2 O2 Sensor for my Ford Taurus 2006. waiting for your answer thanks.

An O2 sensor is also most reasons why "Your favorite mechanic" would have you replace an innocent Catalyst, then have you buy O2 Sensors (Up and Downstream). Why, well according to him, if a Catalyst is bad most likely an O2 Sensor is bad too, even though the Catalyst was never the problem; the O2 sensor/s were. So you're down, 3, 4, 5 hundred dollars with a smile. OBD2 Code P0420 is where the money is. Catalysts don't die easily but lots of crooks would have you believe it so, most of the time a downstream O2 sensor behind the Catalyst is what creates this OBD2 code, along with bad gas, bad air filter, leaking gases, and many other things. So be aware, always have a second opinion. Thanks for the video.

Thanks a lot, you would not believe what the mechanic put me through. OMG 📎⛓️⚙️🔩🗜️🔧

Good Video, Thanks.

Thanks brother for the tip.😎👍

Thx excellent video

muy bueno el video.👍👍👍👍👍👍

Hi thanks for posting this video my question is in a dodge ram 03 1500 is the same process?

I used a thread chaser on my bunghole, and now it hurts really bad. Should I put some penetrating oil in there?

Hey Ben, great video! I've received my "O sensor" without the plastic protector that goes around the metal end, and there's grease all over that end. Do you just wipe it put clean with a piece of cloth, or do you use something else, since that is the part you'll screw in? Thanks in advance for your details, Ben!

Hello, Thank you for this great tutorial. Q> May you recommend a good anti-seize compound that I can buy locally in store in case my new O2 sensor has no anti-seize compound on it? Thank you

Good video 👍 Quick question if I need to replace 02 sensors downstream, is it a necessary to replace upstream too?

Nice Info

Thank you!

You ate the man, thanks

If I keep having problems with my car, eventually I'm going to be a master mechanic. Thank you Chevy for the opportunity to get to constantly fix shit and thank you RU-vid for allowing random people to show me how to fix it.

I like how you explain

so if 02 sensor code is reading check engine light is on changed front sensor and coil pack is it the back sensor then? car is missing some not bad just in idle

Very useful tip! Thanks for sharing your expertise. I have one question... Is it alright to replace the oxygen sensor for the purpose of increasing miles per gallon? My '05 Camry's mileage consumption dropped from 32 mpg to 25 mpg. There is no hesitation when starting the engine, no engine warning sign of anything. Thank you in advance for your input.

Sup man grate video and wanted to know what would happened if I take out the catalytic converter and replace it with a extended pipe with the rear 02 senior plugged in and with the muffler on as well

Liked the video. Thanks. I didn't understand what you meant by soaking sensor in penetrating oil and how it's done. Can you explain a bit more please? Thank you.

Hey awesome video! I'm afraid but I have an 2005 Chevy cobalt that needs an o2 bank 1 sensor 1! You think it would be difficult?

you make this look easy,i have problem with stripped nut,any idea of how to tackle this?

Thanks 🙏

Thanks. I bought the second socket to change the front one. But didn't know there was a second one. Thanks. I have correct tools so it's time to git'er done

How did you diagnose the O2 sensor versus the Catalytic converter failure?

I believe 99% of auto repair shops will rip you off. One time I checked a few shops and they wanted a couple hundred dollars to replace an O2 sensor. I did it myself in just a few minutes. After driving around for a while the check engine light reset. This is how much a repair estimate is for my 2010 4runner: $493.63 or repair pal estimate: $372 to $673 with parts included. For labor only: $127 per hour X 2.2 hours. What? two hours to unbolt one sensor and bolt on a new one? RIPOFF!!

Thank you

Thanks for the video.. need to change mine in my firebird 1999..

I have an 02 sensor problem but I was told to check it's fuse first. Also using a multi meter to see if it's getting power BEFORE you start on the sensor.

thanks!!

Thanks !

Could you do a video for a 2006 pt cruiser o2 sensor and a transmission control module. Please

hello there by any chane would you know which o2 sensor is it on a 1998 honda accord ex 2.3 thats located in the front? is that the downstream or upstream?

So I watched your video and enjoyed it. I bought a generic sensor for a 2007 Chevy Impala upstream sensor and it doesn't come with a wiring diagram. Any Chance you could help me identify which wires connect to which? Any help is appreciated.

Great video. What is the cost for a 02 Honda oxygen sensor? Thanks, Suzanne

THANK YOU! THANK YOU! THANK YOU!

is the code for an 02 sensor pretty straight forward? Could it be confused with a catalytic converter? The mechanic I went to says its the converter yet a trusted source in my family read the code for me and said its an o2 sensor. 2 jobs with a huge price difference. any advice?

Looks simple enough, but like you said you did a lot of work to find out it WAS the O2 sensor. My 2013 Explorer using the obd says two codes P013C and P013Cpd so it could be a number of things. Would like to know how you determined that it WAS the 02 sensor.

CC is so easy to turn on during the production of these videos. We the hearing impaired cannot enough these that are not CCed. Maybe in the future you will be so kind as to turn it on thank you

Thanks for the very informative video. I have 2013 Accord sports, got a check engine light on one day ago, got it checked Auto Zone and it turns out to be O2 sensor. Don't know if it's upper or lower. Kindly let me know how to find out which one and if I should buy the aftermarket or the factory part. Also, where can I find this part on my car. Thanks a bunch in advance.

Extreme difficulty accessing the electrical connecter on top of the transmission, any tips?

Just need an estimate price for a 2010 fusion 02 sensor replacement.... Or should I do it myself

Why would an O2 Sensor be installed in the exhaust pipe ? Isn't all the oxygen consumed in the engine ? Very clear and understandable video. Thanks, Gary

Great video, just wish you would show how there is an upstream and downstream sensor and which goes where....

thank you

How many 02 sensors are there on a 2007 infinity G35 base sedan model. Upstream and down stream may I ask?

awesome thanks

yes it can, i own a mazda tribute and have changed 2 of my 4 sensor and with no jack at all. However i'm not sure about the last 2 sensors, i just may need a jack for those 2?

Really nice video,just one question thou, s dat a truck? Or a car ? D one ur workin on? Thanks 4 posting d video.

Thanks man

On my 2001 Dodge Ram I think I got my O2 sensors mixed up I'm not sure would I definitely know if I put a downstream O2 sensor in the Upstream spot? Also when I was installing one of the O2 sensors I connected it first then screwed it in to the exhaust which Twisted the wires should I untwist them or does it not matter ? I remember one of the O2 sensors had holes at the top of it and the other one was just smooth all the way around any feedback would be greatly appreciated

can young tell me where the 2nd Oxygen O2 Sensor is on Ford tempo 3L V6? I found the front one but I can not find the 2nd one.

Which side of the vehicle do you replace with the P1148. is it the driver side or passenger or both?

When should you change your 02 sensor usually?

Can you tell us about the downline 02 Sensor on a 1998 Lincoln Continental? Thanks

Have u ever done a oxygen sensor on a 2001 Lincoln Ls? Any advice for a first time?

it took me about a month to get mines off cause I thought it was impossible I broke it in half drilled it soaked it with liquid wrench blow torch it finally l use the socket wrench what size I forgot twisted back and forth and the little piece that was left finally came off now I have to replace my downstream 02 sensor I don't think I can do this again

Gut und tight -- lol -- I like that. Thanks Ben. Wow, the auto parts store -- O'Reilly -- looked it up on their computer and told me that it was 60 lb-ft. which sounded kind of high to me. It's a '96 Ford Crown Victoria.

What does it mean by up stream? I have a '03 v10 excursion without the third post-cat O2 hole. So this means I need two upstream sensors?

are all the 02 sensors the same size ? do they all take the same size socket to take them out ? are all 02 sensors takes 7/8 socket ? I have a 99 blazer 4.3 and I have to change the upstream sensor so does it take a 7/8 socket ? thanks !