Dude I've been a Master Tech for close to 40 years and I ran across your video and had to watch this for some reason. You did an absolutely amazing job of describing the sensor system. Bank 1 is always where your number one spark plug is. I have tried many many times to explain that just because a code comes up for a sensor doesn't always mean that the sensor is bad. always check your connection as many times all I've had to do is unplug the sensor then plug it back in clear the codes and see if it comes back. anyway, keep up the good work and keep doing it yourself

you know what's great about this video? He tells you what he didn't do and what you should do. That's a honest man right there!!!!!

Give this guy some credit here. He knows more about O2 sensors then he even realizes. Way to go!

I love this guy. He cares about helping the next dude

10 out of 10 very precise. I'm not a mechanic myself but I do fix my own problems. Thanks Guy all the way from Cape Town South Africa

For someone who is not a mechanic, you did excellently. Thank you

I have perhaps two days more experience than you with auto repair and had the same problem come up on my Honda CRV recently. I managed the replacement after watching hours and hours of video in preparation. Now I find yours that is superior to 90% of what I watched. Just wanted you to know and be encouraged to carry on making instructional videos. The more I study on KZfaq, the more I’m convinced that being able to make a really good video is some kind of gift, and quite rare.

Check engine light came one. Ran the code. Took truck in for an estimate, it might be this, it might be that. F**k that. Watched your video and grew some balls to do the work myself. It was an O2 sensor. Thank you for the tips. It worked. Now I can buy more gun parts with the money I saved. You da man!

I've done most of the work on my own cars since I started driving cars, which is closing on 40 years. I currently drive a 2013 Kia Soul, which has direct fuel injection, and I discovered my main problem on the fuel side. Any car which uses direct fuel injection is going to have a [version of a] device mounted somewhere on the valve cover, which is called a High Pressure Fuel Pump. And this is my helpful story: Leaving the house, my car car starts choking and won't accelerate at all. I can start it, but it only stays running at idle, so I limp it back to the house. I was getting codes for running rich, and for a faulty catalytic converter. Check O2 sensors (mine is 4-cyl, so only two OXY. sensors), they're old and bad. Replaced the O2 sensors. Checked for exhaust leaks, found two small ones and patched them. Car runs again, but still showing the same codes, and still getting the smell of unburnt gas, a.k.a. running rich = too much fuel. No vacuum leaks found. Start investigating the fuel system. I disconnected both bat. terminals, then disconnected the pump. Upon removal, I quickly discovered that my High Press. Fuel Pump was leaking down into the valve cover. There is a heavy spring on the bottom of the pump, which is actuated by the camshaft. Between the pump spring and the camshaft is a part called the 'follower', which has a roller bearing on the bottom, and which is what actually pushes against the spring mechanism to drive / actuate the pump. (This bearing 'follower' is going to be replaced, also. If it fails and sheds debris inside the valve cover, it could easily cause major mechanical damage to the valves and the motor.) Also, when the bearing gets worn and starts to get some play in it, it makes a rattling noise that sounds like valve lifters knocking. Because the fuel pump is leaking from the bottom, and into the valve cover, there are fuel vapors from unburnt fuel building up inside the valve cover. The fuel is also mixing with my oil and thinning it out, wrecking the viscosity of the oil. If my car hadn't chocked out from failed sensors, I might not have discovered my fuel pump issue in time to avert larger problems. If you have a vehicle with direct fuel injection, and you're smelling gas, and the car is throwing p-codes that it's running rich, or the cat. converter has failed, pull the high pressure fuel pump and check if it's leaking down along the spring into valve cover body. If it is, replace it asap. I would strongly recommend installing a new follower bearing, as well. Point is, the codes don't always tell the whole story, or always help to determine the best way to begin your trobleshooting / diagnosis, because the codes are not always giving the full picture. Granted, the scanner I used I borrowed from my brother, and I wasn't overly impressed with its available features. Start by checking those things which only require a few tools to remove and diagnose, and the cost of a little time and elbow grease. Like the working condition of your high pressure fuel pump, for example. My codes said exhaust leak, faulty fuel pressure sensor, bad cat., and none of those were the principle issue. A multi-meter is an essential tool to test and troubleshoot the performance of many components on your car.

Finally someone who is honest! I'm about to change all 4 of mine. Has 145k and never changed them. I appreciate the advice and honesty.

Rock Auto is my best friend & I as a retired Mechanic gives this Frank 100% Passing mark!! Like he really said DO YOUR HOMEWORK!! You got my Thumbs up Frank!! ;👍👍👍👍👍

I do not know why 56 people gave this video a thumbs down. I have watched many youtube car repair videos and this is one of the best ones. BTW im a tech at a hyundai dealer and yes always use the factory oem 02 sensors grate job on this video Frank and thank you

Solid video, great explanation. Open, honest, no ego ... Just straight forward advice from his experience and research.

Great video, pal, and I do mean GREAT. You covered everything necessary for a sensor change and then some. Disregard those 'thumbs down' complainers, they are lame. You were as good as ANYONE I've ever seen.

Dude, I like your intro. "I like saving money"... Makes sense to me.

Honest about what he did and didn't do. Didn't try to make it sound like he knew it all. Clear voice and kept it simple

From Indonesia... man... your kindness is more than typical Indonesian...

I've watched this 3x and crack up laughing more and more each time. The determination and seriousness of this man.

You weren't a mechanic, but you became one. Better than one.

Frant you explain the whole in perfect order.

Thanks for explaining bank 1/2 & oxy sensor up/down stream, appreciated. 👌🖐🇦🇺

Great job explaining from start to finish. Much appreciated

Thank you very much! As a single female this stuff can be very intimidating and unfortunately unknowledgeable people get taken advantage of so thank you thank you helped me more than you know!

thx my guy! you just saved me a few hundred bucks for a mechanic to replace mine! i was expecting it to be a huge repair job but im definitely going to do it myself i have a 3rd Gen 4Runner (99 SR5 4x4) im glad i found your video & im thankful for guys like you always looking out & passing on information to people like myself who know nothing about cars or anything so big thx again brother!! this is my first car so i’m definitely gonna try to replace & repair everything myself that needs to be done. keep doing what you’re doing man good luck & be safe!

Thanks dude, you remind me of myself 40yrs ago..good tip for us do it yourselfers.

Good on you for having the courage to do the job yourself. I bet the feeling of self sufficiency is very satisfying . Thanks for passing on the information.

Thanks Frank, I found this video interesting, easy to follow and helpful. I found it helpful that you showed the two sensors on cam so now I know what to look for. Just wish you would have explained where on the truck the plug in connector went to.

Great video Frank. Very straightforward. The left bank/right bank explanation was helpful. Just finished doing the two upstream sensors on my 2011 Tacoma V-6 4wd. I bought my Denso sensors from Amazon. Same price as Rock Auto but free and quicker shipping. I didn’t know that the chain auto parts stores might do price matching until you mentioned the deal you got from O’Reilly. The hardest and most painful part of the job is reaching and disconnecting the wire connectors.

Bullseye! Straight into the heart. Thanks a lot man. You saved my nerves and made my life better.

Awesome to see someone who really wants to help others, God bless you man for a great video..

So helpful and easy to understand, really appreciate you man!

Simple to the point. Great video thanks for sharing.

Thanks Frank, that was alot of help. I appreciate you taking the time to show us non mechanics doit yourselfers. I got jeep liberty saying bank 1 sensor 2. So I'm assuming that's driver side downstream. Wish me luck and thanks again. Great job

Thanks bro,you are real ,you sensitized alot of us ,I'm planning on getting one of those trucks in the future, I try to do some stuff myself to,A tonne of respect to you bro

Good video! You have a nice, calm delivery. You got lucky with easy access, some are horrible to replace.

Thank you Frank! I like you who do not know anything about O2 stuff. Paid a lot of money for new ones and to mechanic for replace the old ones, "Check Engine" light still back on after few days. I decided educated myself and change them by myself.

Spot on on the advice to stick whats on the vehicle! Stick with OEM. Price may be higher but "buy one-cry once".

👍 this guy has a servants heart ! He'd pull over and change a tire for a lady good man, God bless him !

You are a natural. Great camera work, great presentation and I learned a lot. I have an oxygen sensor to replace and an air charge temperature sensor if I can find it.

Great explanations and tips for a non-mechanic novice. I'd also suggest some dielectric grease in the sensor connector to forestall any future issues with moisture, rain, mud, etc. If your OBDII scan tool will not clear the code nor cancel the dash Check Engine light, you can also disconnect the battery for a few seconds. Be advised first, however, you have the radio code which may be necessary to reactivate the radio after losing power. Also first write down whatever radio stations are in memory since those will also be lost.

I loved the way you explained things. Good video.

Nice job, appreciate you making this video to us diy guys.

This helped. I have a transverse 3.5 v6 engine in a 2010 highlander. I looked up the firing order and Bank2 is at the front of the vehicle. Cheers.

Great explanation for beginners, great job & God bless.

Hey Frank, I do plenty of my own work. Great video, also explanation was awesome. Great video for newbies.

Thanks my guy. Am thinking of doing this myself,i hop it will be as easy as you have showed here. Pls keep such video coming,they are very educative.

Excellent video Frank. I appreciate the careful explainations you give. So thank you for doing this for us.

You should’ve been a professor. Incredible job explaining everything.

Thanks Frank. I have a 2013 Toyota Venza (V6 3.5 L engine) and I suspect it is an O2 sensor problem. Don't want to go to the dealership. Your video has helped me a lot and I am going out to buy a scan tool and trouble shoot the problem. Great video and very honest. Much appreciated.

Good job, Frank. Very thorough and helpful. Thanks.

Thanks -- excellent video! Doing mine this weekend!

Sincere video. Glad you took the time to save us a hassle

Thank you very much for passing the knowledge. This video helped me a lot and saved me some money.

Thank you so much Frank, you did a great job......Thumps up...

I just replaced all 4 of my 02 sensors for the price of $136. Borrowed the tool from my local auto parts store and did it right in my driveway. Dealerships and chain auto repair shops was quoting me around$237-400 to replace 1 sensor, just for labor. I never pay anymore to work on my vehicle when I can do the job myself

Great video! Helped me out a lot. Thanks.

This is the best explanation I have being searching something like this thanks for helping out

So glad I found this video for an explanation of the sensors alone! I got error code p0051 and that gave me an issue with Bank 2 Sensor 1. Now I know that it’s driver side and upstream from the cat! I gotta order the part and I’ll update when I get it all together! Thanks again!

Thank you Frank !! I like saving money too !

Great video! Thank you for the tips and explanation.

Thanks for sharing the video. I have the same truck. 2011 Tacoma V6. I just got the P0031 code. Sharing this video is a great help

Good job ! Your video is very helpful . I have a same truck you do. I will keep your video on hand , if my truck has that issue.

Well done, Frank! Thank you.

Thanks for your help buddy ! Appreciated!

I learned bank 1 is passenger side the hard way too. In case anyone is wondering, P0420 is bank 1 downstream sensor, P0430 is bank 2 down stream sensor.

It's nice to see someone who is articulate enough to explain repair in a simple English manor for all to understand. Unfortunately, my 2006 Tacomas Bank 1 isn't as easy to get to. They re-engineered the location from the inner side of the header to the top for ease of access.

Thanks, Frank! Maybe I shouldn't say this until I actually replace it, but this was a big help.

Great common mans opinion and trying to help people... Great to see. Thank you

Good job with the DIY as somebody will be very appreciative out there.....Good stuff....

This is a smart video - right down to how to release the connector. Thanks, really nice.

Thanks Frank. Appreciate your help.

Thank you. I'm buying a Taco with a bad sensor. This helps get me started. Much appreciated.

Nicely done, thanks for the info.

You say very humbly that you aren't a mechanic, well l say that you are, you show a deep understanding of, and solution for, what mechanics have to resolve and deal with every day. Thanks for your common sense solution to a common problem for people out there that don't know. From this old mechanic of many years. 🌈

Thank you for the explanation you video it’s very helpful

I like your attitude, thanks!

Good job on the video! I refuse to use rock auto anymore! Horrible shipping debacle in the past and no easy way to get it resolved.

Same 02 sensor for all on 4 my 96 Blazer. Excellent video , ty

That is a very helpful information , especially with my Tacoma 2005 wt. 235,000 miles thank you so much

Very honest elaborating video, good man.

Great video, a hot engine makes it easier to loosen good to know thank you

God bless u bro..u honest person u save as from all robery mecanic

Thank you for the information

This was very helpful. Thank you!

Great delivery of very useful info! Thanks for the video!!

This is a good dude. Thank you sir.

Outstanding. Frank, thank you so much.

Outstanding job. I am going to try this on my Jeep.

Thank you very much. Great video.

DAMN GOOD VIDEO STRAIGHT TO THE DETAILS WELL EXPLAINED GOOD JOB BOSS!

Good shit dude, I just did the exact same thing the other day. I took mine out cleaned it with some carb cleaner check engine light went off,

I had P00051a bank 1 sensor 2 on a 2016 Trd sport had just put in a URD y pipe cat delete; what put was an O2 sim or oxygen spacer; cleared codes with obd2 and then unplugged the battery for a couple minutes and it’s back to normal👌 video was definitely helpful

Good video, let me add something for the guy that either doesn't want to buy that tool or can't afford to buy it. Cut the wires on the bad one and use a 7/8 box end wrench or whatever size yours is. You get better leverage. Good job on the video. Shade tree mechanic here.

Great video. Straight and to the point. No fooling around.

Can you please make a video of 06 nissan murano and where is the fuel pressure sensor is located. You the best teacher I have ever seen. Thank you.

Great video, thanks for sharing

This video popped up "recommended". So I watched full view. Helpful content. As a non mechanic DIYer (been a DIYer before DIYer was a thing LOL) I often have to do some research. Unfortunately been given wrong advise way too many times. The anti-seize will save you some future headaches. Just a DIY tip, I use 50% acetone/ 50% transmission fluid to help free rusted sensors, bolts etc. Found it to be as effective as any rust bustor that I bought, always handy & less expensive. Added another 👍 to the 5.7k you already received. Nice job. Stay well, Joe Z

Like the way he emplaned it straight forward

Great Job! Thanks for the video!

Hay, Thank you for your video, I already changed 2 sensors on my car. 2 more sensors to replace. Learn more in your video. I bought the parts from dealer, almost $700. I should watch your video before Buy the parts.