How to Test an Oxygen or O2 Sensor - Plus a Quick Guide on What Each Sensor Wire is For

[@tomhandzik2968]

Been a tech 50 years. Best and simplest explanation I’ve heard!!! Great job!!!!

[@joemikos9155]

Absolutely great demo on o2 sensor. Was ASE cert mech for 25 yrs. Often found mechanics/teachers made assumptions on trainees basic knowledge. It was impressive you took the time to give detailed explanation. You would make a great teacher. Wish I had you as a forman when I had my shop. Don't think you were born yet. Lol Thank you

[@myRatchets]

Joe Mikos Thanks for the kind words, you would not want me as your forman. I sleep on the job all the time hahha

[@joemikos9155]

LOL for real! I wish you the best and look forward to watching more vids. I have been out of commision with long cancer battle but doing fine now. After over ten years I have to do a lot of retraining. Things have changed a lot as you know. Will definitely be watching and responding in the future. Thanks again👍

[@MC-hs4mf]

@@myRatchets p2195 code???

[@vanlendl1]

A propane torch should also clean it from build up carbon ?

[@BuddysDIY]

I always recommend my subs to your channel when they asks what other Automotive KZbinrs they should check out. Awesome video

[@danielfuentes5428]

Subscribed

[@BuddysDIY]

@@danielfuentes5428 r&r is a beast.

[@orbnitsky]

I think you did a good job of explaining and keeping the methods and results in perspective! It may not catch all problems but it will save lots of $ for lots of folks.

[@diehardfan173]

I used the four wire explanation and parts and found two bad sensors. And better to hold torch below sensor head to create a fire shield rather to one side around sensor head! Thanks for taking time to educate the public.

[@sameobiggy]

Great video! Finally found a video that explained what the wires are and differences between them and how to bench test them. Great job!

[@kriskent7805]

P]

[@aaronwarman71]

this is a great explanation, the heater resistance is round about 4 ohms but does vary slightly from sensor to sensor, the sensor reading will rapidly change once the sensor is fully heated all the way around, using the blowtorch is definitely a near as damn it simulation of what the sensor will be experiencing in the exhaust manifold, this is a great way to test an existing sensor and a brand new one before fitting it, it is also a good idea to check the resistance reading of the sensor wires as there should be no resistance reading across it, if it does have resistance then it means that there is carbon crud bridging the sensor wire itself and this build up on an old sensor will cause false readings to the ecu.

[@RussellBooth1977]

A scan tool is the best way to test it with the O2 sensor(s) in situ. If it's both a code reader & one that scans live data,then it will tell you if the sensor is at fault or whether they are reporting a lean mixture due to an air leak or bad fuel pressure. For example , code for a MAF meter & an O2 sensor reporting a lean mixture will tell you that you may have an air leak.

[@TheHeatingEngineer]

Thanks for the info. Very helpful. just in case no one has mentioned it, the heating effect of a resistance is Watts=(volts x volts) / Resistance. For a 7.2ohm resistance on a 12volt system this is 20Watts. This is a low heating effect, but added to the heat from the exhaust gases I guess it will achieve a two to three hundred degrees celsius.

[@andrewedwards3426]

Great video, really helps me! I'm chasing a P2195 (Oxygen Sensor Biased/Stuck Lean, Bank 1, Sensor 1) on my Ford Focus. I've eliminated all other possible causes (vac leaks, exhaust leaks, etc) and have been scratching my head. I replaced my upstream sensor before anything, but I used the cheapest one I could find. This might be my problem, so I'm doing this procedure to check it. Thanks from a new subscriber!

[@theloosemoose8200]

Andrew Edwards don't forget a clogged fuel injector

[@haywire17]

Wells tech published VHS tapes on this method back in the OBD1 days, and I found the same thing as you - during testing of sensors that were "sluggish", the heat from the flame (making the o2 sensor cherry red) literally burned off deposits, and "fixed" sluggish sensors (sort of like the self-clean cycle in your kitchen oven). During normal operation, EGT's on a gasoline engine don't get hot enough to burn off these deposits that can foul a sensor over time... but your torch with the pinpoint flame can, and the test procedure itself "fixes" many of the sensors that trip an OBD code for "sluggish", or "slow response". Obviously not going to fix an "open heater" though...BTW - don't bang on the exhaust pipe, or use a hammer on your wrench, or drop the sensor when removing it...or you WILL have an open heater circuit by the time you want to reinstall it... ask me how I know...

[@UberAlphaSirus]

How I know?

[@fuzzyfish80549]

Or better yet, don't ask me how I know.

[@markfothebeast]

Whoa! Thanks for the tip. I never once thought of that!

[@erniecarrasco9107]

So are you recommending that we torch all our O2 sensors red hot and then reinstall them?

[@Franklinveterinarycenter1of4]

The O2 sensor's sensing ability comes about by producing a small voltage proportionate to the exhaust oxygen content. In other words, if the oxygen content is low it produces a high voltage (0.90 Volts - Rich mixture) and if the oxygen content is high it produces a low voltage (0.10 Volts - Lean mixture). Give time for the torch to burn off carbon and heat the tip all around and not just one side.

[@blackbirdpie217]

An analog meter with a needle would show if the sensor has a faster reaction. That's the downside of the digital multi meters, you're not only looking at how fast the component is switching, the digital meter has a limited refresh rate.

[@songsfromthelord888]

Thanks Ratchets, very helpful thanks again! 🙂 Remember that God loves ❤️ you!

[@Johnslist]

You're a good instructor, I'm giving up on the forums and shops, they've all become jerks who just throw parts at things. I'm hoping this is my problem, I've tried new MAF sensor for P0171 because a shop wanted $500 for that and valve cover gasket (not needed), so I knew they were just throwing parts, at my expense. But I thought 'how can I test sensor without scanner?' I suspect these at 180k miles before my MAF sensor because I also got cat codes in past, like 'catalytic inefficiency' or something. I guess it could be MAF but I've tried two.

[@Engineerboy100]

Good job on the video. Nice refresher Thanks!

[@chinyeesiang6642]

Finaly someone that properly explains each wire.!

[@samg5543]

The best way to test the sensor is to backprobe the signal wires with it in the car and the engine RPM held above idle. The sensor could be producing a good signal, but the wiring to the PCM could be bad, preventing the signal from getting there. A scan tool is great, but that doesn't always mean the signal reported to the scan tool is correct.

[@petrpetr9334]

please, is the voltage also measured on the two white wires as resistance? Is it enough to use a candle to create a flame? Next time do a test on the Map and Maf sensor thanks for the video👍

[@onesourishpuma1766]

Managed to hook up my afr gauge thanks to you mate.

[@VictorinoJake]

Thanks for sharing with the community. Good video!. I ahve one comment for correction on time stamp 3:54 it should be the higher the oxygen the higher the voltage.

[@Franklinveterinarycenter1of4]

The O2 sensor's sensing ability comes about by producing a small voltage proportionate to the exhaust oxygen content. In other words, if the oxygen content is low it produces a high voltage (0.90 Volts - Rich mixture) and if the oxygen content is high it produces a low voltage (0.10 Volts - Lean mixture).

[@bradlfsh]

Quite intuitive frfr. So if it ever goes out of the .1-1.0v range then that's also a sign it's no good ?

[@karikko101]

you are best teacher :) i have i think wats all yours video thanks

[@notoco1199]

O2 sensors get cleaned in temperature above 400'c city driving on low revs is not good for them especially on LPG-that's what I did:-) at first O2 sensor was cold what you did with propane torch is not only heat him up but cleaning :-) so at first was lazy because was cold and dirty... Is not that easy to reach 400'c on 1.3 petrol yaris on motorway :-) I did the same by giving my O2 sensor good blast with propane torch and it works a lot better!!! Good video mate! Thumbs up!

[@sizzelot]

So when he heats the sensor is it actually creating voltage or does the circuit lower resistance so the multimeter can push the voltage through? Could you also do this test with the multimeter set to measure ohms?

[@sizzelot]

On a 2012 Acura TSX 2.4L with the old upstream O2 sensor (2 black wires, 1 blue wire, 1 white wire) still installed in the exhaust I tested the resistance between the blue and white wires with the engine off and while the engine was running. Both conditions showed infinite resistance (open loop) which I believe indicates it was bad and was the reason I was getting a P0420 check engine light. When I installed the new O2 sensor there was infinite resistance with the engine off and showed a small decrease in resistance with the engine running with higher decreases as the rpms increased. When I tested for voltage I got no indications.

[@Casper01sa]

Thnx Man As allways your info is the best :). Plus i almost never comment. Un less it was helpfull.

[@chriswood476]

Finally a down to the point video. Thank you.

[@georgekontopoulos]

Nice video. I am having a simple question. Did you heat the sensor (on time 5:15) with a gas tank or with a propane tank?

[@AFlyingSwive]

Looks like a butane torch, I get mine from lowes

[@Kyle-ev4fk]

Thanks bro! This is going to help me big time.

[@Splashfun2000]

I have a BlueDriver Bluetooth scanner but want to upgrade, what do you recommend as a good all around scanner that has good graphing capability ? Second my daughters 2011 Kia Sorento has basically really slow acceleration, no power on hills, the only code is P0170 which could be bad O2 sensor, bad Maf sensor, vacuum leak, etc, could that throw it into limp mode, I own 2 Optimas and a Santa Fe and even with bad O2 sensors they haven't lost power. Could it be transmission ?

[@elomeli211]

If I wire a bunch of 02 sensors in series than throw them into a fire, can they create enough voltage to power my daughter's boyfriend metal camp bed? Asking for a friend.

[@GameLover1022]

Did it work?

[@DustyPearl-13]

Enrique Oh yeh bud, they will produce between 1.5 and 3.2 KW which will be enough to warm the bed, cook the dinner and keep the barn warm too for the cow, the goats, the three ducks and the newly born piglets...it's cold down there in Alaska buddy!

[@ioanpop8578]

@@DustyPearl-13 ;-) :-)

[@danstray2527]

hahahahaha omg thanks!

[@VTP09z]

i'm not good in hearing English, would you please let me know: 1. when you measure Ohm at 3:12', which wire colors do you connect to? 2. when you measure Volt at 5:02', which wire colors do you connect to? Thank you from Vietnam!

[@yarholiyan5438]

1. the two white wires 2. the black and the gray wires

[@VTP09z]

Yar Holiyan yes sir, i have one question about operation principle. as i know: black and gray wires will send Volt signal to ECU, ECU will adjust Fuel consumption to Engine. So what about the Two white wires? what do they do?

[@yarholiyan5438]

@@VTP09z they help to heat up the o2 sensors to the operating temperatures quicker.

[@VTP09z]

@@yarholiyan5438 yes sir, so one white wire need +12Vdc the other one white need -12Vdc, right? i just test a AFR testing tool by myself (1 sensor like this + 1 digital display), power by a outside 12V battery, sensor put outside motorbike exhaust. the volt from sensor is only 0.01V-0.04V (not normal) although the motorbike works great (low and high rpm). would you give me some advises?

[@shadowofzeus6267]

very simple way to explain things - thanks!

[@Splashfun2000]

Will this test work for a 5 wire sensor ? I can't seem to find a combination of wires that give an output ? Its a NTK sensor off a 2011Kia Sorento.

[@pirihern9329]

Thanks just learned something new

[@phillipsmith1847]

Your videos are always so good. Thanks!

[@fredflinstone7939]

Just a caveat - some 2 wire sensors; 1 wire is the signal, 2nd wire is the heater, both utilizing the same ground. Nice video....

[@lornaz1975]

So does the sensor itself produce voltage when it gets hot? When testing it did not seem that you added voltage but only checked what was coming from the sensor.

[@williammason1932]

This is also my question

[@lornaz1975]

@@williammason1932 I later found out that it does. The channel listed below has a very good vid on it: kzbin.infovideos

[@samwilliamson1732]

He does state a couple times that the sensor does generate the voltage. The voltage is what the computer is looking at to determine how rich or lean the fuel:air ratio needs to be. The sensor produces the voltage.

[@tomashernandez3016]

I recently got a new ECU installed and after a few months I got a check engine light with the p0420 code and I was wondering if it has something to do with the o2 sensor or more to do with the catalytic converter? I own a 2015 lancer.

[@mikeymagic117]

Sorry to say this but 9/10 it is the Catalytic Convertor. You could try CataClean.

[@mikeymagic117]

2015 is fairly new to be having problems with the Cat unless you have been driving car continually with a misfire which will fry your Cat.

[@RNcooley]

Clear and concise best video out there.

[@dlroberts20020]

Hello any advice... I have a 2005 Trailblazer and getting codes : P0153 and P0054 and P0053. I recently placed both O2 sensors and still have the codes. Could it be the Cat?

[@WowHughJanus]

That's usually the next Step

[@davidbrown8629]

Thank you for your videos. They are easy to understand and have been a great help! Good job!

[@crockett159]

Videos are cool. Much respect. If you're in California I wanna pay you to teach me in one day how to diagnose and repair ac system

[@dennisyuen3986]

I think that certain time you are refering to is 0ne second. since most obd2 oxygen sensor now has heater ciruit element built in. you can identify them by the pair of either black or white wires. Not just WHITE.

[@ScottysDetailing]

Great! Video I always wondered how to test O2 sensors. Just subbed. 👍

[@myRatchets]

***** Welcome aboard, thanks for watching.

[@POOKIE5592]

That crate is property of Dean Foods.

[@fatdookie93]

🤣🤣🤣🤣

[@dallaspilotcar9293]

who does not have at least 1 of those?

[@niccadoodles]

@@dallaspilotcar9293 mines owned by dremmel markings.

[@rawwoodwork130]

@Terminology! Your comment started my new year off right lmao

[@SourGrey]

👀💀

[@lightseek88]

Hey bro, do you stay in san diego cuz i have a 04 vw gti thats giving me a random misfire code p0300 and was wondering if you can take a look at it and maybe make a video using the car on diagnosing this code, im not rerally sure how to get ahold of you maybe just respond to this comment and well go from there if its something you can help me out with, thanks.

[@jasona8396]

Great video, just what I needed! Thanks my friend

[@natep9997]

My car is reading no activity from my 02 sensor that I just installed. The old one was throwing a code but it at least had activity. I tested the new o2 and it read 0.00 and then barely moved up to 0.01 to the highest it reached was 0.13 then to 0.03 and then 0.00 right away. It's that a bad o2 sensor? The brand new one?

[@dumisanitembanimtisi8411]

Thanks fr sharing yr knowledge,i can fix any car. Im someone different now

[@wasimohammad3470]

99% people don't carry multimeter so lets cut short. Some indications when u need to check O2 sensor are when Cylinder Misfire, Engine Hesitation, Lack of Acceleration Power and Black Smoke from silencer. MIL is on. Remove the O2 sensor and see if its become white then its time to replace it.

[@michaelsimpson6094]

Man i love your videos informative and humorous and we'll explained keep up the good work man 👍

[@BulliKid]

So was that sensor good?

[@vicky-nc3to]

In a car the wires for upstream CC are. 1. pump current 2. sensor voltage negative 3. heater negative 4. heater positive 5. compensating current 6. Lambda control, Can you explain what is the use of so many wire. why not only 2 or 3 ?

[@justinbacile8535]

vicky singh

[@jcaleca60]

Where would you find the specifications on your car I guess on the internet what's a good oscilloscope to check the engine if it's not too expensive for the Weekend Warrior on cars

[@liyangtime]

Have a question, is this o2 sensor upstream or downstream, is there any different in testing?

[@Suicidebunny666]

Mr. Yang did you every find out?

[@AJDRAGON01]

Hi, I just did this test on my o2 sensor, and is the voltage supposed to go back up on it owen after it drops down to zero? I did the test just like you and the voltage went up to .93v and immediately droped to 0v but then started climbing back up to .23v for about a minute and then started going back down to zero which took another minute.

[@lordmosess1]

Radiant heat. That would be fine

[@etripp111]

All in all still a good video. ;-)

[@RC-Heli835]

Thanks man! My 4 wire Ford o2 finally reaches .9v but it takes several minutes for it to go down to .1v. 05 Ford 500 o2 code p2197 stuck lean. Running I have fuel coming out the tail pipe. When I took the o2 out it was drenched in gas.

[@Elitesniper257]

Blade could be bad injectors that are stuck open or bad electrical connection at the injector that forces them to always be open. You might get misfiring but that really depends

[@RC-Heli835]

Thanks for the reply. Turns out it was a bad PCM. I found 5 skinned wires in the PCM engine harness where it lays on the AC line right beside the low side port near the firewall. Also it turns out that its a very common issue with a Ford 500. So if you know someone with a Ford 500 warn them that the harness needs routing off the AC line. If this one had gone much longer it would soon have worn a hole in the AC line. Thanks again for the advice.

[@Elitesniper257]

Blade No problem. That would have been one of the last places I would looked lol

[@RC-Heli835]

Yea this was extremely dangerous! In just a few minutes of running the engine, it would put a 1/2 inch of gasoline in a large bowl that I had placed under the tail pipe. I took the fuel rail out first and and pressurized it to 40 psi which is what the vehicle runs at and pulsed the injectors over and over. So I knew they were working fine. I don't have an injector tester just a home made 9v on and off pulser that I can plug up individually to each injector..

[@RC-Heli835]

@HexagramMan I replaced the computer. It was keeping one injector open full time. found 3 wires in the injector wiring harness that were rubbed through and shorted to ground near the firewall. (common on Ford 500) I repaired those wires and that one cylinder stayed on full time. I also with the harness unplugged at both ends tested to make sure none of the wires were shorted to ground. #5 injector was getting a full time non pulsing ground strait from the computer. Is it possible that fixing the shorted wires would have fixed the car without replacing the computer? I don't think so. It simply would not run right until after changing the computer. There were some other codes going on that I can't remember right now but after changing the computer it ran good. It still took a long time to burn all the gas out of the tail pipe and for it to quit smoking. If I could get 1/2 inch in a bucket in a few minutes the tail pipe had to be full of gas in the low areas.

[@aimansahaja5981]

which pins did you poke while flaming the sensor? and is it on Vac or DC

[@jakejones5736]

DC for SURE.

[@kennynvake4hve584]

How do you check it on a 1995 vehicle that DONT have a scanner connection? My system is a OBDI system...I guess I could unplug it and see if it runs better or changes....I have a miss...at idle..or any speed or any acceleration...It was missing on 1 cylinder before I replaces the spark plugs...but It still makes a 'bump' or miss once in a while...

[@banajeckvelasco3548]

hi there, just wanna ask if this is one of the reason why idle drops when coming into a full-stop and causes the engine to stall???

[@kymountainman2213]

Yes, rough idle/cut-out during idle can be a common reaction to failing O2 sensor. Your car mixes fuel/air ratio based on data from the O2 sensor. If it mixes too lean (not enough fuel), the ratio may not be enough to continue firing, and the engine may even die completely. If mix is too rich (not enough air), incomplete combustion can occur. This may happen more commonly when first driving (especially if your O2 sensor is an unheated one), before engine & exhaust reaches normal operating temperature.

[@MR-hc9uh]

That's great mate. Thank you! Really helpful!

[@sungn4512]

Great vid on O2 sensors. Is it a bad idea to just replace all O2 sensors together in one fell swoop? Or just do the specific O2 sensor that triggered a failure? Just recently it tripped the downstream O2 sensor. I just got a used hi-mile 2009 Camry (175,000 miles) and did a huge tuneup. Im in the mode of replacing lots of items to ensure I know the baseline health of the vehicle. -----Thanks & keep up the great work.

[@erniecarrasco9107]

Yes. Replace all of them at the same time for the best performance and the longevity of the catalytic converters.

[@diehardfan173]

I wish I could have seen the alligator clip and the smaller parts more closely other wise thanks much!

[@jurosmilkovich1427]

How did the multimeter probes attach to the Oxygen Sensor for the voltage test?

[@Aladinscave]

Correct me if I'm wrong but a o2 sensor do NOT measure the o2 content it simply heats up witch changes the amount of voltage going to the ECU, witch will determine how much feul goes into the system ......

[@merlingeikie]

Well done. simple and direct and low cost. Greetings from downunder oz

[@christianwoodley7699]

Can someone please help. I have a 2006 Suburu Impreza R with a 2010 Impreza engine in it. It’s throwing the code P0031 (heated O2 sensor circuit low bank 1 sensor 1). I’ve tested the harness for power with the ignition on and gotten 12.8 V and then the resistance on the sensor with a reading of 2.2 Ohms. What else could be causing the problem? It’s driving me nuts. The engine struggled for power under 3K rpm in 1st-3rd gear. I reset everything and cleared the code to see if it did anything and now the car is running like it’s brand new, the P0031 code is back as a pending code however it’s no longer causing a CEL on the dash. What other diagnostics can I do?

[@mrautoguy8419]

Great video! I have a 2006 Kia spectra 2.0l with codes p0171 and p2243. I have a 5wire oxygen sensor for the upstream. Call pls tell me how to test this sensor?

[@alfredomarquez9777]

HEY! You are OVERHEATING the sensor tip, and also RISKING it because you are overheating only ONE SIDE, and that stresses the ceramic inside! The PROPER way is to Only heat to a dull, dark red, and no more and doing it in a well shaded room to be able to see the first subtle red color just appearing and then withdrawing the flame immedoately!. Heating and turning the sensor to heat its tip area UNIFORMLY around, and not concentrating the heat at one side prevents stressing the ceramic inside, as it is fragile. You may add the caution about not heating the rear portion (behind the hexagon), as you could damage the heater element, thus, the only portion to heat, is the very tip of the sensor, also trying to make the tip of the flame to enter inside the holes, in order to decarbonize the ceramic inside the outer metal jacket, that cover is only there to protect the ceramic and its delicate precious metal deposits, which are what generates the voltage signal. Someone could presume that heating to bright red color didn't damagep his sensor, but not all sensors are so rugged as the factory installed ones, the after market ones tend to be less rugged (and sometimes less durable too!) Best wishes.

[@eddiehill6665]

Hey man, thanks for your video. I have seen another video of yours on touch up painting a car and enjoyed that one. Keep up the good work.

[@dynamn]

Does this require to be cleaned at regular interval as the mass air flow sensor please?

[@Paiadakine]

dynamn no. Either they work or they don’t.

[@atsoleyhobuh5347]

I checked my O2 sensor 2 wire (downstream) with Multimeter and it shows 1.02V when the sensor is fully under flame and 0.45V at half inside the flame, 0.02V when out of flame. But my Bluetooth scanner shows variation in value only when starting the engine. After coolant temp raise above 40°C, it shows 1.28V constantly regardless of foot on Padel. No change at all. Then key ON and ignition OFF, still 1.28V. then I checked voltage between the 2 wires, it shows 4.45V without disconnecting the connector. Disconnect and checked still the same. Checked resistance between the two pin and between chassis and the wires, all are open. Any other suggestions to research on my catalytic converter failure?

[@pixure]

isn't the o2 sensor voltage supposed to vary between 0 to 0.9 volts? 0v being a lean mix, 0,5v a perfect mix and 0.9v too rich mix. maybe different o2 sensor run on different voltages. anyway, i'm working to fix my peugeot 307 catalytic converter fault, I've changed all spark plugs, the coil pack, and one injector. another thing that is said to be able to cause that fault code on my car is the EGR valve. I took it apart and cleaned out a lot of carbon buildup, checked that the valve was able to open and close and then put it all together again and checked if the egr valve started clicking upon starting the ignition; it did, so it is certainly getting power. still the same error message and rough idling. the last thing that could cause this fault should be bad o2 sensors, so that's what i'm gonna check tomorrow.

[@atsoleyhobuh5347]

@@pixure when tested the sensor alone with flame and multimeter the result is within the spec's but when connected with ECU, the scanner shows 1.28V constantly. And the voltage between sensor ground and the sensor line is about 4.45V when Key is ON

[@RaceLab37]

Very good video, thanks!

[@philtulk9180]

Thank you, very helpful.

[@adanarceo4636]

Thanks brother 👍👍👍

[@alexxustube]

Very informative. Thanks a lot!

[@alejandroespinoza3686]

Great video! Now I know that the signal is created by the sensor not by the pcm.

[@nimtabile9198]

Found this video diagnosing a P1135 fault code on my OBD II( 2003 toyota camry 2.4l). I started out by replacing my catalytic converter and the upstream (bank 1, sensor 1) I already replaced it but the code still persists.

[@raymondrodriguez9283]

I have 2002 Pontiac Bonneville sle 3.8 .their is a loud bang and the motor will not crank to me it feels like it is out of time. I know the wires are in the right plugs i put new plugs and wires .pleas how do I fix this what do U think I am doing wrong

[@fredsalter1915]

I tried this with an acetylene torch, but accidentally cut the O2 sensor in half.

[@SheikhN-bible-syndrome]

Um yeah no crap you have to use propane torch because oxygen acetylene gets hot enough to cut plate steel propane does not

[@rubenrivera9101]

@@SheikhN-bible-syndrome its a joke my man

[@bradlfsh]

Yeah I threw mine in the coal forge to warm it up few minutes later I came back it was gone idk🤷

[@Yophillips3272]

Lol

[@1990chromes]

Lol

[@johndelong5574]

Most engine management issues seem to be related to carbon biuld up.Carbon is impervious to acid but hydrogen peroxide should burn it.Does anyone have any knowledge in this area?

[@angeles1994]

Bro i drove 2000 miles in 2 weeks i did 2 stp ultra injector cleaners with 80 gallons of gas, took me 500 dlls of gas but kept.it full all the time, the jerking i felt that felt uncommon, was gone after those 2000 miles, car ran leaner, and that was prior to changing both my o2 sensors

[@pooja-ov7xl]

Hello can i interface this sensor with any microcontroller for college level project??

[@RzVids]

So I’m presuming both my upstream O2 sensors are bad because neither produce a voltage at all, it just stays at 0.0. While both downstream o2 sensors does show a voltage that fluctuates as I’m driving.

[@toml.8210]

A Het gu would be better for heating the sensor. The propane torch burns almost all the air so you would get a reading that indicates a rich mixture. A hear gun only heats the air, and you would get a lean indication.

[@CemArmutcu]

My heater giving 20-25 Mohms value. IT's very big, normal or not?

[@samwilliamson1732]

Not normal. That shows a bad heater circuit. Replace the sensor.

[@ricardohernandez-jg7ht]

can you rip open the small openings in those so that they work better is my question.I got some piece of shit ones online made in america off ebay they arn't from china but they might as well be and I am going to replace them anyway so I thought I would mess with them a little bit and see if the codes go away I got a new cat and new manifold and new maf and new air box and air filter and a bunch of other new parts but I think opening the small opening on the sensor just a tad will help reply asap thanks

[@sandyorencia5876]

need help. My sister ford everest 2007model. When I drive and push the accelerator it suddenlly off the engine and it flashes the check engine. I tried to full tank and the chk engine gone and it does not power off. I used the car for a week. now when the fuel is low it came back it suddenly flash the chk engine and goes off while driving. need help whats the problem. is it the fuel tank has water in it? when i turn on the car without driving its ok no chk engine but when i drive and push the accelerator to make it run fast sometimes it will flash chk engine then off the engine.

[@coimbatoreehl6503]

Does a bad O2 sensor consumes more fuel and emit black smoke from the exhaust?? pls reply.

[@coimbatoreehl6503]

@Charles Martin vlogs Thanks buddy

[@mica122213]

video starts at 5:00

[@s34nvideos]

Video start at 5:00 for people who don't want to learn anything

[@carldickerson54]

s34nVideos I mean I hear what he’s saying but I don’t get it

[@myotherusername9224]

The other youtube video says if you ohm out the wrong leads you will ruin the sensor. It's very sensitive to any stray voltage at all. Have you heard that or is it a myth ?

[@2Phast4Rocket]

+FightClub MeetsHere : I though to ohm out any circuit is to check for continuity, meaning there is electrical contact. The O2 sensor doesn't have any power source when cold so I can't imagine it will be damage. On a sensitive electronic cuicuit board and when it's powered on, you can do damage if you ohm out a wrong pair or pins.

[@scottwatkins39]

thanks for video, enjoy your work. i unplug my upstream sensor and chevy aveo runs better. plugged in engine stalls put in another sensor does same thing. 60,000 miles on car. plugs and injectors must be good, right since it runs well when sensor is unplugged. what do i look for? could it be a clogged c. converter. i changed plugs 3 weeks before 02 sensor issue. the radiator was changed a couple of days earlier. your thoughts? thanks.

[@knockout35189]

+Scott Watkins did u figure out what it was? one thing u could have done was check exhaust back pressure and below 3psi is good reading. This test tells you if your exhaust is restricted.

[@jesusmoya1575]

if i get a coed that says heater control curcit low voltage.. bank 1 sensor 2 but i replace both oxyen sensors what would my next step be? thanks

[@gordbaker896]

Replace the O2 sensor furthest from the engine, likely past the Cat. Bank one on V engines is on the side #1 Cyl is on.

[@hardstylemexmendez1844]

Thank you 👌🙏👏

[@mrautoguy8419]

I used my scanner and with the engine at normal temperature. The sensor voltage goes a little above 2volts and my long term fuel trim stays at 25%.

[@MrScoobydoo12]

Very good info. Thanks

[@jacobortega8910]

Would an O2 sensor cause pinging (spark knock) in a 2010 4.6 3v?

[@1mook3]

Yes. A faulty 02 sensor can cause many symptoms such as poor gas mileage and increased fuel emission, engine missing and pinging.

[@mansoorahmadautos]

Nice work

[@juice8284]

I have a p0135 and 138 code on my 05 odyssey. I think there's 4 o2 sensors on it.