How to change a 02 oxygen sensor on F150 5.0 Litre (EP 146) Bank 1 Sensor 1

[@unclemarksdiyauto]

🔽 Check out my other F150 video in this series playlist: 🔽 kzbin.info/aero/PLgeVnQRQkbzAuSdJT868s0haqZuh7ygPk

[@kennethdurbin3385]

Was able to swap out my plugs and upstream sensors today. 30mins to do plugs, 15mins to do the drivers side sensor and 2hrs to do the passenger side. Lol. No room hardly to fit a wrench or even turn it. Had to unbolt the transmission lines bracket to gain more access and then realized after 2hrs, I was attempting to tighten it. Oops! My 5.0 runs smooth now it seems. Still only 11.4mpg. 🤦‍♂️

[@unclemarksdiyauto]

@@kennethdurbin3385 Sorry I missed your comment! I get around 11 mpg city never reaching over the speed of 35 mile a hour. (small town driving) and straight hwy trips can squeeze around 22 mpg out of it. Towing my 28 ft fifth wheel on hwy I get around 10 mpg at hwy speeds.

[@samdunlap5365]

I had to lay in my gravel and dirt drive 16:33 and do Mt fuel pump and down streams lol must be nice to have a garage

[@unclemarksdiyauto]

@@samdunlap5365 I try not to complain too much. It is a very small garage, but it beats gravel, and I can heat it in the -40F winters we have in Manitoba, Canada!

[@isma3lcanas]

This is the only good DIY video out there. All the others just show the downstream because they are unable to complete the upstream sensor. The upstream sensors are 100x harder than downstream on these trucks, there is ZERO room for leverage. Also, showing how to undo the sensor plugs is something no one else shows. Great video!!!

[@unclemarksdiyauto]

You are to kind Ismael. Not a easy repair to record for sure. Thanks for the positive comment. I will do my best on my next videos as well.

[@locknload9143]

THATS WHAT A REAL VIDEO SHOULD LOOK LIKE! The last one I watched was a brand new EXAUST & SENSOR. Buddy had it out in 30 seconds lol.. GREAT VIDEO. Thanks for sharing 👍 🇨🇦

[@unclemarksdiyauto]

Sorry it was not better video quality. Hard when your laying in the floor! Thanks for watching Tom.

[@locknload9143]

@@unclemarksdiyauto..No worries, great job.

[@robertbraunconstruction1180]

I will tell you this right now first off I love this man’s dedication number two this is why we have mechanics because with all his complaining I would just throw the towel in and hire somebody but I’ve enjoyed watching this video. I know that’s crazy but I have enjoyed it while I have been eating my chicken minis from Chick-fil-A.

[@unclemarksdiyauto]

Thanks man! That is why I always include any issues I am having with the project. (Hope I was not too annoying) Better you see how hard it really can be then start into it thinking it will be too simple. Thanks for watching. Better videos to come with better angles and more lighting.

[@tresareid9991]

Really liked that Unclemark described each and every move. Gave good tips and didn't stop recording even when it was probably tough to do so. Keep up the great work!👍👌👍

[@unclemarksdiyauto]

Thanks so much Tresa! Now you know what your up against if you try it!

[@MMoxie-lb4iv]

What a great video. Thank you, you will save me a ton of time, sweat and broken hands. I totally appreciate what you did and the difficulties. It was very educational.

[@unclemarksdiyauto]

Your welcome, @MMoxie-lb4iv.

[@drummerrene]

I think no two swaps will be the same but this video definitely helped me out. I ended up using a open 7/8 wrench and a pry bar as leverage to crack the threads of the sensor. o2 socket came in handy to thread on the new one. I also removed one bolt for the tailpipe heat shield from the chassis. That allowed me to get to the connectors a little easier. If you have access to a lift getting the leverage to crack the sensor off will be a lot easier. Thank for the vid.

[@unclemarksdiyauto]

All good, drummerrene! A lift would be sweet! It would make this super easy.

[@jamescollins9017]

Thank you for the video. I have spent hours upon hours trying to find a video related to the same oxygen sensor I am having trouble with on my 2008 f150. After watching only 10 minutes I was able to disconnect Bank One sensor One I spent hours and hours trying to get that removed.

[@unclemarksdiyauto]

Hope your problem is fixed now!

[@queenstownkid]

that was a bear ...good old fashion butt kickin ......good honest review of the job no sense saying oh we changed the part now we know what we are up against if we have the skill level or not ...i thought cab cam was ok ...its not a job unless we get some dirt in our eyes ..as we are doing a part swap and are having trouble it seems impossible but when we get that sucker done it sure feels good we won the last round of the fight.....cant wait for your next video

[@unclemarksdiyauto]

I know some of these are long... but hopefully detailed enough to help a person do it too! I have added chapters to most of these videos so they are skippable to important parts of the video. Check that out in the description section.

[@queenstownkid]

@@unclemarksdiyauto longer the better for me i enjoy your videos,,i would rather watch real life you tube videos then what they have on tv nowadays....we got more snow again hope your weather is better then here

[@TheNitroGeneral]

Hello from Sweden 🇸🇪 It’s always the part that is in smallest/hardest place to get to and change. Great video stay safe

[@unclemarksdiyauto]

The worst that can happen is you end up taking it to a shop after giving up! It is even harder when you are trying to record it! Camera angles, camera in the way etc. Our temp is -10c. Snow mostly melted. It has been a fantastic winter.

[@TheNitroGeneral]

@@unclemarksdiyauto Great to hear about the winter. I have to change the heat sensor that is located on the manifold and it’s stuck. spraying it now for days with anti-rust spray. Stay safe

[@unclemarksdiyauto]

@@TheNitroGeneral Oh boy. I wish you well. Hope it comes out easy.

[@alexbartolomucci7492]

Thank you for the video! Was a big help showing me how to disconnect the plug.

[@unclemarksdiyauto]

Your welcome Alex. More videos on this truck in my F150 playlist. Thanks for watching.

[@SidneyHamm-x1d]

at 09:48 you said to pry up on clip, that was wrong for my truck, after fearing i would break my clip i watched another video which said to push down on clip and that was how mine came off. 2015, F150, v6 eco boost, bank one, sensor one, otherwise great video, thanks!

[@unclemarksdiyauto]

@@SidneyHamm-x1d Not sure what the 2015 ECOBOOST sensors are like. Glad you are a thinking person and went with your gut and got it off without any problems. Stay safe and keep that truck running, Sidney. Thanks for your comment.

[@DrChim_Richels]

Helpful video for working on my 2009 F150 5.4L. I was able to get the plug to release by using a small but long flathead screwdriver by sticking it in the slot from the other direction. Was reluctant to cut the wires in order to use a reg 7/8 socket as there’s no going back and that’s when I tend to run into real problems. (Having done this now and if I have to do it again, that is probably what I’ll do). Initially tried using a 7/8” wrench on the sensor but it was too short and I couldn’t get near enough leverage. Also the area was too tight to get a pipe on the wrench. So went to oreilly and they loaned me a set (free) of these sockets-one similar to yours and two other shorter ones with offset flanges for the ratchet (3/8 and 1/2). Used one of these and was able to break it loose quite easily. Still a good fight undoing the sensor by hand and then resetting it as well as the plug due to how tight the area is. The heat shield on my truck makes this area very tight (and sharp) and my forearms fared no better than Mark’s. Great job and thanks for the video!

[@unclemarksdiyauto]

Thanks Bill! Glad the video was of some help. Hard to record a video and work while on the floor upside down! All my scratches are healed up now! LOL.

[@ourcarproject3059]

Thank you for making this video wasn't sure where my bank 1 sensor 2 was but now I know. I'll try cleaning mine hopefully it works like that

[@unclemarksdiyauto]

Mine had the heater circuit gone in mine. If it is going to be hard to access, I would just replace it. If its easy, then try the cleaning.

[@moegenuisgar7297]

03 f150 just change minds Saturday, seen your video today, what a Hell of a spot, for o2 sensor gsssh! My fingers felt like I working them out! Lmao

[@unclemarksdiyauto]

Hope that was your issue, the sensor. I did the video back in Nov 2020. It was a chore. On a hoist would have been a lot easier!

[@alanballard7466]

You did a great video and you are definitely one tough man.

[@unclemarksdiyauto]

I am either tough, stubborn or stupid sometimes Alan! Lol. Truck has been running good since video and check engine light has not come back on. This project was even tougher, our Grand Caravan timing belt! kzbin.info/www/bejne/pojWlnWNn8yUh9E

[@bradvincet1848]

Glad I watched your video! I was going to make my own video, but average viewers don't realize how much time a KZbinr spends trying to make a respectable video. I bought the O2 socket with the ratchet drive on the side not on top. Used a long handled flex head ratchet and it was relatively easy to break it loose. I'm so glad I bought that O2 socket, it saved me a lot of pain and cursing! The O2 sensors on the cats look like a major pain due to the heat shields, but that's another day. The hardest part was getting access to the wire connector to remove it from the plastic stake-on that holds it secure. You have to fight the heat shield, it's limited access. I also made sure to tuck the new wire back in place and to snap the connector back in place.

[@joshemajavich799]

Hard job my friend I did fight with the same sensor on my f150 2002 but first I bought a bunch of tools that could help me move inside that small room

[@unclemarksdiyauto]

I was too stubborn to make it too easy on myself! LOL!

[@Hallahanify]

Why did you buy?

[@sherakhela4044]

I wonder how you managed to film it so clearly. Thanks

[@unclemarksdiyauto]

@@sherakhela4044 This was one of the hardest videos to film! And not enough room to work. Next time I will Jack the truck up higher. First I need to buy taller Jack stands. Thanks for watching. More F150 videos on the way.

[@Danielcruz6123]

Great video thank you it helped me alot!!

[@unclemarksdiyauto]

Thanks Daniel! It is easier to do if you can put the vehicle on jack stays lifted higher than the truck sits normally.

[@kennethdurbin3385]

Popped a 0430 code on my 238k mileage 2013 5.0. Debating on swapping out all 4 of my sensors in hope it fixes it. Truck sucks the gas bad. 11mpg on a good day.

[@unclemarksdiyauto]

Is that not a bank 2 sensor code? If you want to just swap a part, why not just swap that one? Also, you would not have exhaust leaks near that CAT, would you?

[@nicholastovar563]

Aqesome video. I think im just gonna cut the wire if im goong to install new ones

[@unclemarksdiyauto]

Good idea cutting the wires, Nicholas. Not sure why I didn't. It is not like if this fix didn't help that I would have put the old one back? lol! Just buy a OEM sensor. Many of the generic ones are garbage.

[@jmispace]

Just in case anyone is wondering, its pretty much the same for the 3.5L ecoboost as well.

[@unclemarksdiyauto]

Thanks John! Should be about the same. Hope it helps someone who wants to try changing this themselves!

[@tonyo8458]

Just did mine today on the 3.5 ecoboost the same pain in the butt

[@unclemarksdiyauto]

@@tonyo8458 yep. Pain in the butt. Bet it will S easier on a hoist! ??? Anyway hope yours is running good. I have one to do on a 2015 grand caravan next.

[@dennisw7350]

Best. I subsribed.

[@unclemarksdiyauto]

Thanks so much! I have a small playlist on this truck. Should be more videos on it as fixes come up. (Low mileage 2013 with 32,000 miles)

[@Red1Wollip]

There is a shorty tool like you have that would make that job much easier.

[@unclemarksdiyauto]

Wish I had it when I did this! (Maybe next time!)

[@jeremiahwilburn2380]

Thanks for the vid. I'm needing to change bank 2 sensor on my 6.2l but I learned enough from this to do it hopefully.

[@unclemarksdiyauto]

Hey Jeremiah, hopefully it is the sensor and not some vacuum leak or something else where the computer thinks it is sensor. You will find out soon!

[@michaelmonday418]

I replaced the upstream bank o2 sensor on my 2011 f150 after having a code reader check, and my check engine light is still on. Don't know what could cause the fact if it's not the sensor.

[@unclemarksdiyauto]

Do you have a exhaust leak near the sensor? Also could be a wire to the sensor. (Just 2 possibilities)

[@michaelmonday418]

Thanks for the help, I'll see if I can hear a leak under that side of the truck or on the manifold.

[@unclemarksdiyauto]

@@michaelmonday418 Could also be the wire is broken or cracked somewhere to the computer.

[@Jasonjames1970]

Thanks for letting me watch you struggle. It's nice to see that I am not the only one. You let the camera roll which is nice to see! Great Video! If you didn't fix the issues would other codes come up such as p1151?

[@unclemarksdiyauto]

That code is a Oxygen sensor code. If the right sensor was replaced, it is possible there is something wrong with the sensor. (a inferior after market product) Also, a wire could be broken at the connector or somewhere else and the computer thinks it is the sensor but it is a wire. Just some thoughts. (What brand of sensor did you uses, Jason?)

[@Jasonjames1970]

@@unclemarksdiyauto I figured it out. My father-in-law was messing with the mass flow sensor. They never put the unit back together properly. I also had engine coil number one gone. With the mass flow not getting a tight seal it leads to a whole bunch of other codes apparently from what the mechanic has told me. He said with an old style tool that reads codes always mark down in the logbook. The first code that comes up is usually the one that you focus on. The first code told me there was an air leak. Well, I’m no mechanic.thanks

[@unclemarksdiyauto]

@@Jasonjames1970 Me just a DIYer with a little extra knowledge. I sure don't know everything. The P1151 code is only applicable to Ford vehicles. It indicates that there's a problem with one of your oxygen sensor. Could be Low fuel pressure or high fuel pressure, or MAF sensor (mass airflow) clogged or faulty, or An engine vacuum leak has been detected, or Fuel pressure regulator or fuel injector leak. QUESTION, you don't have a exhaust leak do you?

[@jakecoker794]

The code reader for mine was showing bank 2 sensor 1 which is on the drivers side. Check engine light didn’t go off right away, but then it was clear for 2 days then came back on. Code red same sensor. Both times the code said the secondary code was bank 1 sensor 1. Should I try swapping out that sensor next?

[@unclemarksdiyauto]

It could be the sensor, or it could be the vehicle does not like the brand of sensor you replaced. Also, it could be that there is another issue like wiring to the sensor. Code readers don't know these things. Exhaust leaks and other things can also cause a sensor code to come on. Do some more research before spending more money on sensors, Jake. Let us know what you find.

[@jakecoker794]

@@unclemarksdiyauto it was the purge valve.

[@unclemarksdiyauto]

@@jakecoker794 Interesting! Good thing you did some research and saved some cash on not parts changing!

[@jakecoker794]

@@unclemarksdiyauto yes if both the number 1 sensors on the 2 banks are throwing code saying they are running rich, then that purge valve on top of the intake is probably the culprit.

[@unclemarksdiyauto]

@@jakecoker794 Let us know what you find!

[@edwardmartin7753]

I’d just leave the wrench in there for the next time. Lol😊

[@unclemarksdiyauto]

Because it's a FORD? LOL?

[@Hallahanify]

Is bank 2 sensor 1 just as difficult?

[@unclemarksdiyauto]

I didn't do that one, but it probably is. It would be way easier if on a hoist where you could stand underneath it. Also it would be faster to just cut the wire at the sensor before removing.

[@dm7097]

A trick I learned a while back is to (after matching the new sensor up to the old one) is to cut the harness off at the plug and use a regular deep well socket to remove the old one. P.s. I like the sound of the 5.0 liter in the F-150!

[@unclemarksdiyauto]

That is a great idea and now that you tell me it, that seems so obvious a thing to do! I will remember that for the next one for sure! Maybe some one else can benefit now from your comment.

[@Hallahanify]

Big brain thinking right there... lmao I didn't think of that 🤦‍♂️

[@ВасильСарчук]

Hey UncleMarks, how did you determine that was Sensor 1? I'm getting conflicting information from the internet and my '13-'14 factory service manual. The sensor on the catalytic converter is a CMS (Catalytic Monitoring Sensor), which leads me to believe the one you were operating on was Sensor 2, as other information on forums have stated that Sensor 1 is closer to the exhaust manifold pointing to the firewall in the engine bay.

[@unclemarksdiyauto]

I was working from underneath, so the farthest from me (which was closer to the exhaust manifold) is sensor 1. Look at the 2 sensors. Sensor 1 is closer to the engine, sensor 2 is closer to the muffler. (exaggerated explanation) In reality, they are within probably a foot of each other.

[@daves77]

awesome video, ty, did i see 24L/100k ? i have a 2012 f150, mine says 18L/100, hopefully the sensor had something to do with it, ty again

[@unclemarksdiyauto]

You did see 24/100! I was towing my 5th wheel! At about 110kph that’s what it does pulling. 8800lb 28 ft trailer. (It was reset before trip to check correct average)

[@unclemarksdiyauto]

Best I ever got was 13.6L/100kms or 20.9mpg hwy not towing on straight hwy trip probably wind pushing us both ways!

[@MichaelCarter-pq9me]

Great video man, why didn’t you try a 7/8 open end wrench some day the wrench works better than the socket in some cases

[@unclemarksdiyauto]

I should have! Next time!

[@CrossFit-nation]

Where did you get the rachet you used in this video?

[@unclemarksdiyauto]

Hey wolfy, I bought it at Canadian Tire here in Canada. These are similar tools: Flex head 3/8th ratchet: amzn.to/3eDYjbs or amzn.to/3BdkzAB

[@vico.2514]

Just got me first code. P2195 “Sensor signal Biased/stuck Lean -Bank 1, Sensor 1” does your video apply to me? Betsy just hit 190k. She been good to me up until now. She a 2013 ford f150 stx 5.0

[@unclemarksdiyauto]

It might be. I could also be caused by a host of other things. Exhaust leak, a bad injector, maybe a vacuum leak. Remember to that a broken wire can cause computer to think what is at the end of that wire (02 sensor) is bad. Hope you can figure it out Vic.

[@vico.2514]

Thanks for responding. After getting underneath the truck i have finally figured out that there is in fact a crack in the exhaust. So time to weld. I think and hope.

[@unclemarksdiyauto]

@@vico.2514 Good you checked.

[@vico.2514]

only thing is that its after both o2 sensors on the exhaust system. could this still fault my o2 sensor?

[@unclemarksdiyauto]

@@vico.2514 I am guessing if exhaust crack is after the sensor, it is probably not that, although you should fix it. Could be the sensor, or it could be a broken wire going to or at the sensor.

[@jeffbrown3963]

Might have forgot the most important step. 1. Get tetanus shot before proceeding. Lol - good video!

[@unclemarksdiyauto]

Good suggestion, Jeff! Truck has been running great since I did this video back in 2020. A pain to do, but just cost me the part and some time.

[@Slow_f15023]

Just got a code p0147 system to lean bank 2 gonna try to replace the 02 sensor upstream

[@Slow_f15023]

On 2023 f150 but got longtubes

[@unclemarksdiyauto]

Could be 02 sensor, could be corroded connector, broken wire, a exhaust leak near the sensor. Put a good brand name sensor back in, not some chinesium brand. They are trouble.

[@Slow_f15023]

@@unclemarksdiyauto cleaned the 02 sensor good and cleared the code yesterday, today it never came back on , only the code for no cats but we will see if it comes back on later if it does then I’ll just replace the whole 02 the truck only has 30k miles

[@Slow_f15023]

@@unclemarksdiyauto will motorcraft do the job still ? If I have to end up replacing it later on

[@unclemarksdiyauto]

@@Slow_f15023 Yea that seems low miles for a issue, but things break. How old is the vehicle?

[@samdunlap5365]

On my down stream once i was sure it was loose i just cut the wires

[@unclemarksdiyauto]

This sure would be a easier way! Next time when I know it will come out, I will also cut the wire! Thanks for the excellent idea, Sam.

[@bradvincet1848]

Any more sensors go bad since this video?

[@unclemarksdiyauto]

Nope. Are you having issues Brad?

[@bradvincet1848]

@@unclemarksdiyauto got my first code a day a ago, I need to check into it. I'm wondering if they should all be replaced, I have 195k miles.

[@unclemarksdiyauto]

@@bradvincet1848 Was it a O2 sensor code? I personally would just do the one that is bad. Try to get a good brand OEM replacement. Some of the cheap non OEM stuff can be problems right from the start.

[@bradvincet1848]

@@unclemarksdiyauto it's a Code: P2626 - O2 Sensor Positive Current Trim Circuit / Open Bank 1 Sensor 1 Status: - Confirmed - malfunction is confirmed I believe that is the same one you replaced

[@unclemarksdiyauto]

@@bradvincet1848 Could also be wiring from that sensor to computer just so you know. Otherwise Brad, replace it and see if it makes computer happy.

[@MichaelCarter-pq9me]

Also you could have cut the wires on the old one to give you more room

[@unclemarksdiyauto]

Thought of that after I did it! Would have made it a lot easier for sure Michael.

[@danielmiller5385]

I work in a garage next time pull tire off go through fender wall lot easier mor room

[@unclemarksdiyauto]

Thank you so much Daniel. Not sure why I didn't think of that since most of the cars I have worked on I have accessed different things that way!

[@danielmiller5385]

@@unclemarksdiyauto I also own a f150

[@danielmiller5385]

@@unclemarksdiyauto u defiantly went hard way I tried it to found easy way fender area

[@unclemarksdiyauto]

@@danielmiller5385 Good to know! This 2013 FX4 has only about 24,000 original miles. We tow our rv 5th wheel a little bit. Its our extra vehicle.

[@jamestapp5545]

How many 02 oxygen sensors are in that Offenhauser engine in that champ car to the left of your head. 😃😎

[@unclemarksdiyauto]

2 one each side of the motor! They don’t make it easy if you don’t have a hoist. Thanks for stopping by, James!

[@jamestapp5545]

That Champ Car doesn't have any O2 sensors. I was just joking. I am an ex-Midget owner and driver and couldn't help to notice the beautiful Champ car.@@unclemarksdiyauto

[@unclemarksdiyauto]

@@jamestapp5545 I missed the joke! I had a viewer who knew the driver or owner of that car! (I can’t remember, but they too noticed it!) I have a different poster up right now so it took me a bit of thinking to know what car you meant!

[@samdunlap5365]

Glad I have smaller hands lol.we shall see if that helps any 😢😮

[@unclemarksdiyauto]

I should have had the vehicle higher off the ground. That would have helped lots too!

[@mavis-watts8731]

You must be rich off of KZbin because every 2 min was an add on this video.

[@unclemarksdiyauto]

So sorry about too many ads. You tube actually pays .00245 cents per view. So, not getting rich! Lol if you saw 4 ads, I get an One American penny!

[@mavis-watts8731]

@@unclemarksdiyauto I’m just messing with you! I know it’s not your fault.

[@unclemarksdiyauto]

@@mavis-watts8731 Good to know! Thanks! KZbin has changed user agreements so now they can place ads on anyones videos, without permission! We all can expect to see more ads. As for my posting, hope it can be of help to someone! Have my Grand Caravan timing belt video coming out in June/July. A harder repair for sure!

[@samdunlap5365]

It's a bendy thingy not a flex thingy 😅

[@unclemarksdiyauto]

Ah, I was wondering the correct term! LOL! Thanks, Sam!

[@samdunlap5365]

@unclemarksdiyauto I try,not very hard but I try

[@unclemarksdiyauto]

@@samdunlap5365 I need all the help I can get from viewers!

[@brandonamond3124]

Next time just use a 7/8 ratchet wrench after you break it free.

[@unclemarksdiyauto]

Good idea Brandon. The worst part was being trapped under the vehicle with hardly any room to move arms. If this was up on a hoist, it would have been almost a piece of cake! (trying to record it at the same time didn't help)

[@mechanicauto9704]

short 02 socket it be more easy

[@unclemarksdiyauto]

Probably! This was the socket I had, so I used it.

[@hasanjebur2441]

Bruh I asked for a f-150 engine not a mustang

[@unclemarksdiyauto]

Yep Hasan, it sure don't drive like a Mustang!