How To Test and Replace an Oxygen Sensor P0135 

I've watched a lot of video regarding o2 diagnostics and most RU-vid video makers go straight to replacing the sensor without any real diagnostics. They're a bunch a mechanics, and the way you showed this vid is the way an automotive technician does it. There's a difference.

Thanks for the video. After buying an off the market $26, O2 sensor from ebay for my 97 Merc Villager, I was beginning to think it was the cheap O2 sensor. Installed the sensor and cleared the error code. It came back after the next start and stayed on. I watched your video and then went to work again. As I grab the connector to check if I was getting power at the connector, I found the problem. A broken wire. I soldered the wire, cleared the code. Re-started several times and problem solved. Thanks a million. Now I have an extra sensor just in case it really goes out. First step, check if you have line voltage to your connector. Second, the $26 O2 sensor from Ebay works. I decided just leave it in the car.

thanks for this post! The info is super helpful

Great Video, thanks!

Great vid, the old School way todo this. I had a CEL p0160 go off for o2b2s2 Instead of doing this I used my obd2 scanner with live data and watched the voltage move on the o2 sensors. It voltage changed when I hit the gas a little. I ended up just clearing it for now.

dude u r a life saver this helped a lot thnz a lot man.......my car had a bad power supply which didnt let the o2 sensor to work.... thnx a lot

Thank you for showing this!! Major help

Great video. Thank you, sir!

Thank you very much for taking the time to explain this. It's very generous of you.

I just got one word for you EXCELLENT WORK!!

Excellent video. One of the better car repair videos I've seen in a while.

Great video, I will be checking mine on my ML320 Thanks :D

Very well presented and clear instructions well done. I like the use of the manual as a small window within the main video. TT

Very good information, great job! Thank you.

thanks man!!

Excellent videos. Subbed :)

This is really great i lean a loud thanks.

Nice to see a no BS guy doing a useful video.

Very good and thankyou. I notice that some sensors are 4-wire (AFR type) and EricO at SMAR has a Ytb video on testing that type _Toyota AFR / 02 Sensor Problems_

Awesome instructions. Thank you

Was helpful I'll try it on my truck might be the 02 sensor

good stuff my friend! awesome video and thank you

Good info for future thanks

When checking for voltage, what would happen if I was testing another wire other than the one that you tested. Could you do any damage? Thanks....

Awesome tutorial. I'm impressed with the detailed explanation on this, and the hands on guide. I'm not a NEW home mechanic by any means, but the o2 sensor is something I'm not familiar with. I did however want to add some helpful hints to this, as I do have electronic college training, as well as working in, and owning my own electronic repair shop. I know it's different from mechanics, but there are basic ideas in terms of the electronics points that I could offer help in. It's probably impossible to hold the meter leads, while performing "The Wiggle Test." It's a common problem that can be determined when it comes to wires. In my case, I purchased a pair of banana jacks (That's the connectors that fit into the meter.) And using basic small safety pins that are about 0.6mm in diameter, cutting a couple of them measuring from the sharp point to about 0.75" in total length. Choose your color of wire, probably one red and one black. I used very small gauge, like 24AWG, and made my lengths about 36" each. I soldered one end to the cut end of the needle, then protected the soldered area with heat shrink tubing. Now when it comes to testing things like this, I can actually push the needle ends either into the contact area, or even in through the back of the connector. It would be beneficial to make a few different test leads, like some with small alligator clips, like in this case, to grab onto a chassis ground. If you had one lead with needle point held in the ground wire of the connector, and the other lead on the engine, or chassis ground, you could place your meter in continuity check, (which makes some meters beep when the leads make connection, and you would then be hands free to perform a wiggle test. The meter should be showing constant connection on that ground wire, but by gently wiggling the ground wire in that harness, if it ever stops beeping for even a split second, (providing you're sure your not moving your leads connections) then you certainly have an INTERMITTENT connection. Since all engines move, shake, etc... it's a good test to do. The types of problems you might have from this, may not happen all the time. That's a pretty good sign, it's an electrical issue.

This is very helpful. Can I use the Chiltons manual for my truck though?

Love the way you explained it slowly an clearly bro good work 👍👍

Very clear, thank you!

FYI when you were showing your continuity test your meter was still reading resistance. Always a good idea to touch the probes together to verify your continuity test is good first.

Excellent and informative video. I did exactly what you said not to on my newly acquired 97 Accord EX-luckily I could not get the downstream o2 sensor out so I returned the new one for a full refund. I have both the 0135 and 0141 with fully illuminated check engine light. I will follow your steps and see where i stand-in your experience with both these codes appearing does that equal a bad Cat? Thank you much for a great video, Terry

Very professional and accurate way of trouble shooting. I will like to ask you if you can do a video for cleaning a O2 sensor, since I have that problem, heating resistance must be between 11 and 16 ohms and I had close to 900 ohms on my down stream sensor of my 99 Toy Rav4, is not open, carbon has increase the resistance. Thanks, NO

I also just got one word for you, damm good info. Thanks.

Isn't there a fuse for that? Awesome video. Thanks a lot.

Nice tips! thanks mate.

this very well your video friend continues this way and thank you to share your esperiencia and it was seen me a lot and a greeting from tijuana low Californian mexico

where can i find the trouble diagnostic chart ? thanks

hi CarsNToys thanks for this video from this video i found out this 02 sensor is 3 wire if 4 wire sensor like 2 white 2 black wire how to check it??

Thanks. Good read

outstanding!

Thank you man really good info I will perform a test on my g35

if i replace the oxyen sensor and still get a coed for bank 1 sensor 2 what should i do next.. check the connection part like you did?

Love your vids but have a question. I have a 2000 Chrysler Concorde, 3.2 litre engine and the battery is under the air filter assembly in the right wheel well. The pos and neg terminals are located up in the engine compartment. I just ordered my first Multimeter and would like to know if I can I test my battery by connecting to these exterior posts or does it have to be to the battery itself. Thanks.

You've tested the heater circuit voltage but I need to test the oxygen sensor in my brothers Subaru Forester on the 1 Volt DC scale on my multimeter. If it sits on 0.5 volts DC when v the engine is running then the sensor if faulty, however if it fluctuates between 0-1 volts !

Was the first check the heater wire? That would explain the 12v

Any difference between OEM sensor and auto part replacement

Thanks my friend. Should we test the sensor when the car is off? And I test it there is 0 ohm and the car is off

I was looking for the correct sensor output with different oxygen levels. Didn’t find it here.

hi carsntoys, can you help me ? i need to replace the 2 upstream o2 sensors but need to know if they are 3 or 4 wire so i can order them from rock auto and are the wire lengths the same on both ? please help

How can I obtain the work sheet on 03 Altima

Thank you so much!

what hapn if the o2 sensor failed to work

I hope this gets answered quick,i tested the resistance and for me it showed 5.8 does that mean i need to replace my sensor?

Well done sir hey where do you get your repair manuals

Thank you

Wheres is bank1 sensor1 located in a 1997 Mercedes c230

So where can I get that page you are referring to? I have a bmw 318i 1999.

how about P0160? also which O2 sensors work better on Nissan, Denso or Bosch or NTK ? I have always been told for Asian cars Denso and for European cars Bosch

Love this video. ...now could you tell me where is sensor 1 bank 1 is located on a car....i have a mini cooper 2007

Thanks. Great video once again. Being that I'll have this Nissan until she dies...I hope you don't get rid of yours.

Can you do a knock sensor testing video...

Thanks man

hi I have 1992 opel vectra comes with 3 wires oxygen senser .I have problem finding brand new oxygen senser for it .can use any other 3 wires oxygen senser and change the conectors .could you please give a list of cars that come with 3 wires oxygen senser and finally what kind of car is this you are working on.thanks

What size wrench did you use?

Can you explain on how to choose which setting on a multimeter when measuring items

What voltage should you get on a knock sensor? 2001 Chevy Silverado 2wd?

you man awsome

Nice video and very informative 🌹👍 What is the difference between upstream sensor and downstream sensor?

Life safer lol . I just change the knock sensor and accidentally took off the whole intake and after I finish connecting everything back I had the P0135. Turns out I forgot to connect the sensor back lol thank you

Great video.

Hi, I like ur video is outstanding, what's the correct voltage for volvo 2004 s40 car, The voltage is receiving is 3 volts in your video shows 12 volts I am getting P0135 on the header circuit.. anyone can help?

Good video!

That wouldn’t happen to be a 3.0L V6 in a 4th gen Maxima would it?

I'll be replacing my O2 sensor tomorrow. I needed a new project. This seems doable all on my own. Fingers crossed.

dose it matter if all your o2 sensors look the same can u put them in the wrong place in an when you replace one an the one u took out as holds all the way around it ,an you get one to put in an it dose not can that make any difference.

A lot of other videos say that you should back probe the connector with the car running - is that necessary? Sorry if this is a dumb question, I don’t really know what I’m doing.

what kind of repair manual do you have

And so well explained.

Great video!!! I am stuck playing part roulette and cannot drive the truck to the auto store to have it scanned. How do I know it is the o2 sensor? It is acting like it is misfiring, but it has new plugs and wires. new fuel pump, new TPS. is idling all over the place, from 500-1800, up and down, up and down. Doesnt sound like a lifter tapping but there is a slight tap sound coming from manifold area. any advice would be great. The next parts I am going to try are o2 sensor and fuel pressure regulator. unless it is safe to drive the truck 30 mi to go to store and back.

Good information

Hai. My 2008 GMC Denali was throwing p1133 and p1153 and I changed both upstream oxygen sensors. After driving the same code is coming back again and again. Cleaned the throttle body, maf sensor, air filter, changed the spark plugs and spark wires and checked vacuum leaks etc. I do clear the codes with scanner and after one day it will come back. Any suggestions

Is it a bad thing if i put too much compound on the threads?

Thanks for the video.I have a 2003 Nissan Sentra giving me codes p0031 and p0037 and the harness connector has 4 pins .Could you do a video for that so I could check the wiring.I changed the sensors but Everytime I start the car the code keeps coming back inspite of clearing it.Thanks !.

Hello, would a "Haynes" manual suffice for the OHMs and Volt levels we are looking for when testing resistance and volts with each sensor or wire harness plugs? Thank you very much.

thanks for every thing but is the sensor 2 same of the sensor1

I have a question I just had the heads 're worked and 5 New valves put got it back together running good not missing but when I took it for a test drive it boggs out like it's chocking the engine out its a 2004 dodge neon 2.0 SE model 5 speed Do you have any idea what it may be

Whre can i find of p0141 02 heater circuit bank. 1 ,sensor 2 sr .

My 02 sensor voltage jumps between .1-.9 after 5 minutes of engine running in warm weather. Bad sensor?

Dear I have Honda odyssey 2006 & yesterday I got a engine check alarm then i did diagnostic with the auto lab he said 2 sensor faulty. P0135 ho2s AF Sensor B1 S1 heater & P0155 ho2s AF Sensor B2 S1 heater, How i can repair it & where i can buy it as i am living in Qatar

Can you help me with trouble diagnosis for dtc P0136 B1S2? Senzor Circuit Malfunction

Very informative! (S exy too!)

you look like jack from Lost, lol. but anyway great vid cheers boss.

Very good But one thing that you forgot to mention is that you need to check the bad sensor for any contaminates. Sometimes coolant can be lodged in there as well as oil. You need to check for this because that good sensor you just installed could be put the shit in 2 weeks. Then you are gonna have to replace them. I know you provided excellent information and everything you said matched with the video. but checking for any contamination is CRUCIAL for fixing the problem COMPLETELY

The battery voltage on mine is showing 14 volts instead of the 12 volts you have. Is that a problem? What would cause that? Everything else checked out good.

thanks for taking your time to film and share this helpful video. I don't know much about cars but I have some questions that might be dumb to ask. where could I obtain a repair manual for my vehicle? is it the same booklet as the owner's manual? and you don't need to disconnect your car battery in order to unplug and replace the 02 sensor, Do you?

I have a p0135 so many video don't know witch one for 2000 Infiniti i30

Hi sir. I have a check engine light on and codes p0132, p0152. This codes are related to bank 1& 2 sensor 1 on both banks. I check the homs on each sensor and reads 26.5 And 24 .5. I assume that those sensors are bad according to your readings. I have a nissan vehicle as well. Is this correct,? Can you confirm this for me. Thanks in advance. 👍

Thanks for replying back so when the guy put it on the Diagnost he said it was bank 1 sensor 1 that i need .....so he show me what i needed... it was at the top of my car..... is that the same one you talking about...or is it under neath the car...im really confused....

try to do with the multimeter but my probes are to thick to fit into the sensor? any idea's? thanks.

nice video, i do have a question ware can a get a repair Manuel four my car. thanks

got a p0420 and 0430 code.where are these sensors on 05 Hyundai Santa fe