How To Replace Both O2 Sensors On A Subaru
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- เผยแพร่เมื่อ 18 ต.ค. 2024
- For more information or a written out step by step you can stop by thediyguy.net/2... . A video on how to replace both O2 sensors on a 2007 Subaru Outback. It should be the exact same for 2005-2009 Subaru outback's
Thank you for the video! Did this today on my 2009 Subaru Forester and it wasn't bad at all. I used the o2 sensor change tool sold by RockAuto for $13 and it worked great. I actually was able to access both sensors from the top without removing paneling. For anyone reading who considers themselves "not mechanically inclined", first of all, same, and second of all this is very doable with the above video as a guide.
Not sure if you'll see this, but what sensors did you get? My check engine and cruise control light came on. Took it to O'Reilly's and they said two sensors popped up. I really don't want to pay to take it to a shop.
Nice video, thanks for posting! Easy to follow for someone like me that does not do much mechanical. For my 2012 Subaru Outback I was able to access both sensors from the top without having to remove paneling. Used a 7/8 in wrench, couldn’t find a 22mm. Saved about $300 from workshop estimate between ordering my parts and doing the work myself. Took about 60 minutes and is super straight forward. Thanks again!
Did you notice a better performance on your OB after replaced them?.
Cheers.
remember to disconnect the negative terminal on your battery if youre going to work on anything electrical in your car, it isnt very likely but there is always the chance for a short
I do not see this practiced enough
Ed Zachary
I did not disconnect the battery when I cleaned my AIR flow sensor . How will I know if damage occurred?
That makes so much more sense than putting a wrench on the positive terminal.
I have 2009 Outback. Nothing in manual looks like mine. This video was fantastic, 2007 exactly like my 2009 for layout of sensors. You rock, dude! Thanks! Car running great, ECU reset exactly as you said.
You're very welcome, Glad we could help get you back up and running. Thanks for watching and taking the time to leave us a comment. Don't forget to give the video a thumbs up/ like if you didn't already. Thanks
Bought my wife a 2006 Outback 3weeks ago, had exactly what you said in this video. O'reillys guy tried to sell me a different brand sensor...I wasn't having it. Got the Denso rear sensor only, followed your instructions. Beautiful, fixed the Idle, Cruise Control, Check engine light, Vehicle is better than new. Not a bad investment for $4000 bucks. Thank you so much for the knowledge.
They hold their value very well. Enjoy ur outback
Awesome to hear we could get it back up and running right. You're welcome, Glad we could help. Thanks for watching and taking the time to leave us a comment. Don't forget to give the video a thumbs up/ like if you haven't already. Thanks
Got told I needed to pay 3400$ for Jew catalytic converter and sensors but the cat seems fine and there’s no real misfire just the knock noise, a little loss in performance, a CEL, and a cruise control light and if this solves my car problem I’ll never trust Midas again
Fantastic! Thank you so much for this super clear video, and the write-up on your website too. We've been having trouble with our 06 Outback-0420 and 0037 codes at different times over the last few months. A great reputable shop quoted $585 for just the rear sensor and $3400 for both sensors and the cat, but we'd love to save some cash and try the sensors ourselves. I just ordered the parts and we'll give it a go this weekend. Glad to have your knowledge on our side.
How did that go? I am having the exact same codes on my 05 Outback. Rear after cat Denso sensor for $82 with crowfoot wrench $9 arrive tomorrow. I hope this will fix it..
Whenever you have rear cat efficiency code - use sparkplug defouler trick / spacer - there are also spacers with cats built in for under $150 this won't require you to replace the cat.
Rockauto is great for NTK/NGK/Denso sensors...
@@ajberg6451 is that p0420?
Thanks for the vid. My mom's outback has a bad o2 sensor and her dealership quoted her 650 bucks. Told he to let me do it and low and behold a 22mm open end wrench is a "specialty tool" to the dealership lol. What a scam.
In my area you can borrow them from a local auto parts store like Autozone
Excellent video, thanks. Used this to fix my 2013 Outback this weekend. Ironically the post cat O2 sensor was just loose! Cleaned and refitted, ran it through the OBD drive cycle - no CEL awesome!
You're welcome, Glad to hear we could help and that it was a successful repair. Thanks for watching and taking the time to leave us a comment.
Finally....now i know the location of them......i try to find them for days.....Thank you sooooo muuuuch!!!
Outstanding Video! Clear, concise, and complete. Thank you. Will be replacing one of both of these next week. 🙂
Thanks for making this video. I'll be replacing my sensors. I was going to get it done but it's definitely not a big problem to change them. Thanks for all the details about the wires and connectors.
Hey thank you so much for this video, I have never fixed anything on my car and I had this air sensor went on my car and I've never fixed anything on my car and I watched this video 5times and I fixed my car, thank you if you lived close to me I would hook u up with a few joints.. thanks 😊🙏☝💯👌👌👌👌👌👍🦅🇺🇸🦅💯👌👌👌
I was quoted over $700 for replacing the a/f sensor. Going to try this later today, thanks for the awesome video!
way to much!
@@FizuhcuL yup! Took me 30 minutes, a $100 dollar part, and a wrench 😊
@@rogerrinkavage Glad we could help save you some money. Thanks for watching and taking the time to leave us a comment. Don't forget to give the video a thumbs up / like if you haven't already. Thanks
Roger Rinkavage always better to do the job yourself if you can💪🏽
I can only hope my 93 Legacy has similar easy access as yours. I'm sure it will be MUCH harder to loosen than yours. Great video gives me hope for the weekend job.
How did it go 😮😊
Thanks for this video! Subaru dealership wanted $650 to replace both O2 sensors (parts and labor). I purchased the Denso pre and post cat for $218 (Advanced Auto matched their online price by giving me a 25% discount just for asking). Used your video as a guide and replaced both myself. Thank you!! -Ashley-
You're welcome, Glad we could help save you some $$ and help get your 02 sensors replaced. Thanks for watching and taking the time to leave us a comment. Don't forget to give the video a thumbs up/ like if you haven't already. Thanks
Thank you! I just ordered a front one and can't wait to put it in tomorrow!
Really nice video Dude! Learned a lot from it. Thank you!
Awesome video thank you! This was also exactly the same for the Impreza 07-11
great explanation with easy job...I need to my as well. I replaced mine in 2018 but it was generic...Needs to be Densor - Thx so much
I did this and a round of cataclean for CEL PO420 and the light is still on but the rough idle is gone and the slight tic on idle is much much quieter. I filled up again like it says and am about to do round 2 when I’m down to a quarter tank again. Any recommendations? Also I did this on a 2006 Subaru Outback and the 22mm was best on the rear O2 sensor but the front one had no clearance and I needed the specialty tool and the tune up kit. Ended up getting the O2 sensor kit and that’s whatchu might need if you’re watching this and think you only need the 22mm wrench
Excellent video, thanks! Do you know if the O2 sensors for a wrx of about the same year are at the same locations?
Great video got my car running much better for sure
Thank you for showing me the way. I did this on my 2005 subaru Impreza Outback Sport.
I didn't have a 22mm wrench but had a monkey wrench, I tried to turn it by hand but it was a tight s.o.b so I kicked it and it came off.
When I put the new one on I didn't crossthreads witch was a relief.
Thank you my online friend.
Very helpfull.
From Brazil.
9:05 you mention tapping the threads with M18x1.25 tap but I believe the correct sizing is M18x1.5. An O2 sensor chaser is a much better tool for this job. Speaking from the experience of doing that this morning after watching your vid. Cheers!
EXCELLENT VIDEO. PROFESSIONAL A1 QUALITY
Need to do this on my 2003 Outback with the ej252 motor. Curious as to why you dont show after the changing of sensors the check engine light and cruise light out
Thank you very much from Brazil, from your helping me out!
Super helpful thanks a lot!! I’m going to try tomorrow
Many thanks for taking the time to produce such a clear and informative video.
I have a 2004 Subaru outback ll bean 3.0. I believe the a/f sensor is bad as that is what code shows up from dealer. Would you recommend the denso from Napa auto parts? Great video
Denso is the OEM one so it'd be best to stick with it for the extra $. Thanks for watching and taking the time to leave us a comment. Don't forget to give the video a thumbs up /like. Thanks
Thank you for making this so understanding.
I subscribed for sure
Thank you for this. I have the P2271 code on my 2015 Impreza with a FB20. Is this a similar fix? Error is "O2 Sensor Signal Stuck Rich Bank 1 Sensor 2".
Does this sensors are the same for the 3.0 Outback? Thank you!
This wasn't a good video. It was great.
Nice job. Thanks for sharing. '06 impreza with P0031.
lol. You got me when I first started to read your comment. You're welcome, Glad we could help get your Impreza back up and running. Thanks for watching and taking the time to leave us a comment. Don't forget to give the video a thumbs up/ like if you haven't already. Thanks
How did it go for you?? I have the exact same issue on the same car, only mine has a 2010 motor in it. The pre cat sensor is in the worst place I’m going to have to remove the whole air box and bracket assembly :(
@@christianwoodley7699 I haven't bothered yet.
Complex same
@@christianwoodley7699 that's the code for manifold one isn't it behind front wheel?
So the Orange wire is the upstream o2?? Firestone quoted me $460 to change it in my 08 Outback sport
Yes that is correct, The orange is the upstream "before the CAT" and the gray is the down stream "after the CAT".The sensor itself is 99-125$ Here is a link to the 99$ one same one I used in the video amzn.to/3A06720.
If it comes with a new wire why not cut the old wire so you can feed a socket on the sensor to remove it? Just a thought...
Thanks for you video, for outoback or legacy is the same sensor ( denso OEM ) i have a 2006 2.0 r legacy. Thanks.
thank you . very detail step by step. thank you
Great video!
Fantastic video and thank you.
Mine says bank 1 cat is under threshold? P0420 is my code.. do u think this would work before replacing the cat.. I have quotes from 1000 to 2900 🤦🏼♂️Awesome video brother!!👊🏻
Noob question, did you/he take the tire off to access the rear sensor?
He did say he went into the fender well so I would guess he removed the tire to give him a little more room.
Great Video...my daughter has a 08 Outback and the dealer wants almost $600 to do this job. Couple questions...did you have to take the tire off to get to the rear sensor? Her car rough starts only when she fills the gas tank up when she's under a 1/4 tank. Would that make sense that the Ox sensors could be bad? Dealer says the head gasket is leaking oil onto the sensors to make them go bad. Appreciate the help here!
Thanks. You don't need to remove the tire you can get it by just turning the wheel all the way to the passenger side sometimes it is easier. The camera angle at the end was sitting on top of the tire. Yes oil or coolant getting onto the sensor will cause them to fail. Are you getting a check engine light for the sensors?
TheDIYGuyDOTnet yes on the check engine light but the stranger thing is whenever she fills her tank up under 1/4 tank, the car rough starts and doesn’t start right up. Once it starts though, it’s fine until she has to fill it up again. Dealer said O2 sensors.
@@andydrohen9190 It could be the 02 sensors. It could just be the fuel filter.. when was that last changed? Could be a vacuum leak or something to do with the charcoal canister/ Evap system. Can she fill it from 1/2 a tank and not have a problem? Is she topping the tank off? I would try from 1/2 tank as she would normally fill it and see if it happens.
TheDIYGuyDOTnet she can fill from a half tank and have no issues. Not sure on filter. Have to research the last time it was changed. Appreciate the help!
Thanks for the video
Question: I see that you just disconnected and reconnected the positive terminal of the battery when doing this work. I'm totally new to this so I did some additional Googling around about how to disconnect a battery and read a bunch that recommended disconnecting negative FIRST and then positive. Many say that disconnecting positive first (or positive only) can be dangerous and cause a short (which you mention) or worse, burning/explosion. Curious to hear your or anyone's thoughts on why you should disconnect the positive only. Does this prevent the computer from losing power and wiping out the stored values, by chance?
You're absolutely correct. It's much safer to disconnect the negative cable first and then the positive cable.
Great video! I have P0131 for my 2006 Outback 2.5i auto. I guess that would be the oxygen sensor, am i right? Replaced it once, now it is faulty again, but the car does not consume more gas than usual. It did consume 20% more last time it failed.
I have the same code. When you replace the o2 sensor again did it clear the code and has it come back for you?
Damn, I bought walker brand 02 sensors before seeing this video. Does it absolutely HAVE to be denso??
Thanks for a great video! I have a late 2005 Legacy 2.0 aut. My engine light and blinking cruise light is on + the light for automatic stabilisation disconnect (even if its not). Would that also indicate fault on these same sensors? I live i Norway and I cant fint the same partnumber on the densosensors over here. Would you happen to know what the sensors are called here that will fit my car?
22690AA590 and 22641AA460
I've just replaced both sensors and car has more power and less fuel consumption but the post cat sensor error code and it does not react on gas pressing. Can I test it with multimeter? Heater resistance, wiring connectivity? The pre cat registers 5A and new post cat only 0.7A. But straight line that is not reacting on engine demand. Did I buy a faulty sensor or my wiring is faulty? How to check whole circuit? Thanks
I have a 2006 Subaru Forester with a p0133 code, do you think this would fix it?
hey man i was wondering what the part number would be for a 2012 legacy rear oxygen sensor
good job on the vid.
We have a California model. Can I get away with just replacing just the two you replaced? Thanks!
thanks for sharing 😊
Well done.
To get at the o2 sensor in the wheel well did you have to jack up the car and remove the tire?
wondering the same.
just remove the plastic engine splash guard
The air/ fuel sensor, will this cause a very rough Idle??
Is this the same for the 2004 forester? Thanks 😊
My downstream O2 sensor on my 04 Outback is frozen solid...D40, torch, breaker bar couldn't loosen it. I'm gonna have to borrow or buy a 22mm box wrench so I don't round it off using that 7/8" crows foot tool.
We use Kroil. WD40 isn't that great as a penetrating oil . Spray it on and let it sit for a while or over night maybe spray again and let sit and then they usually come out. amzn.to/2KfwZyx Good luck with getting it out without damaging it.
What is number of the ranges you use to open sensors? I’m trying to borrow someone else
Denso, as good as the factory Subaru product?
Did already take all the heat shields off? Trying to get rid of all the rattles and mine has a heat shields.
Do you have to change both of them
I Seriously CANNOT find front or rear sensors on my 16 WRX..you'd think they'd be somewhat similar, right? Or no o_O
Is it the cvt?
@@jason7078 yessir
You rock man! Thanks for making this video :)
Would this work on a 2015 Outback?
I have a 2006 subaru legacy 2.0R bp5 and a p0032 error do this serial numbers work for me also?
Okay sweet but question. What about an ej20x?
What did i miss.. taking off positive terminal.?? What about negative??
Thank you bro
The catalist is destroyed too. Antifreeze kills them quickly because of the super heated steam created in the system. It cooks the 02 sensor and melts the cat. Seen it before on Dodge Caravans. I replaced several due to head gasket problems. You can use a hand held video scanner and stuff it in the 02 hole. My guess is you will see the damage right away. Then its a trip to the salvage yard. After market 02 sensors are useless. That air fuel sensor is calibrated to the Subaru. Who knows what those E- Bay specials are. I know way too many fools buying the after market ones only to go back and buy the right one. Any mechanic worth his salt will tell you OEM or they wont even install it.
Yes aftermarket 02 sensors are worthless but the cheaper cost draws people in trying to save a buck. The cheaper ones 30-50$ each versus right around 100$ each for the OEM ones. The problem now is people getting there own parts online and having the shop just install them not wanting the shop marking the parts up. Some shops don't care as they know you'll most likely be back to replace it with an OEM one in a short time.
@@TheDIYGuyDOTnet I talked to a couple smaller garages and they refuse to install those. As stated, Its going to end up costing double in labor plus buying the OEM parts. No mechanic worth his salt should agree to installing such crap. As a small engine mechanic, I refuse to ruin my reputation on garbage parts. When I had a client ask me to do a partial engine rebuild on his snowmobile engine, I told him he was welcome to take it to someone else if he wanted but as a rule, If conditions overall warrent a total rebuild unless it is a clear case of failure caused by parts or someone else, A high milage engine should always get a total rebuild uaing above standard or factory parts. As I work with a company that sells only high quality after market parts, I can feel comfortable knowing I wont have the finger pointed at me should something go south because I installed cheap aftermarket parts.
I dont know y i didnt think about the junk yard. I was going to try to clean it. Thx dude
@@myes344Junk yards are also a cost savings idea. Down here we can remove our own parts as a pull a part junk yard. Just select your donor car carefully. You will want to get it from a crashed/ damaged car rather then one that has no damage as it would most likely be there because they didn't want to spend the money to replace the head gaskets or it could be a bad transmission. Also ensure they have a return or exchange policy in case you get a non working part. You can also inspect under the engine for oil/ coolant from a leaking head gasket but sometimes they leak internally so its hard to tell. You can smell the radiator to see if the coolant has been over heated as well.
Here in Australia I’m buying a pre cat sensor for my ‘06 Impreza and it’s costing me about $330 AUD ($225 USD). Ouch
What engine is this for??? Important info here
Will this work for a 2004 suburu legacy 2.5.
Subaru hasn't changed much over the years. Your sensor wiring and sensor location will be a little different but the process will be the same. The sensors will be a different part # as well. Your sensor plugs will be on the side of the transmission rather then on the front corner of the engine. It would be easier to locate both sensors on the exhaust and then follow the wires to the connectors then undo.
Was the tire removed so you you could install the second sensor?
You do not need to remove the tire. Just turn the wheel all the way one way and you should have enough room. As the camera was sitting on top of the tire for the video. You may find it easier to remove the tire.
Thank you!
So the problem seems to have been resolved. I changed both sensors. I must’ve put in about 45min of work. You sir, have saved me hundreds. For that I’m grateful.
@@pasajerodelabrujula8261 Awesome, Glad to hear replacing the sensors fixed you car and that we could help sace you some $$. You're welcome. Thanks for watching and taking the time to leave us a comment. Don't forget to give the video a thumbs up/ like if you haven't already. Thanks
@@TheDIYGuyDOTnet I just read this. No experience but limited income.
One Q. Why did you purchase Denso brand?
It is not the same for a 2005. Plus if you have turbo, the setup is different than the base model. I got the 2005 2.5 outback and i can only find one o2 sensor easily. Ill update if i can depict where the upstream and downstream is at
5:54 you could always cut the wire off the old sensor, it’s trash anyway
What’s that pipe holds 02 sensor called between the headers And cat back ? Tryna find a replacement my flanges are rusted and gaskets aren’t sealing proper
Upipe or downpipe maybe. Oem spec names prob be more like:: manifold exaughst
@@m1cklife168thanks I totaled the car btw lmfao
@@ShinraSavage I've done that before :/ take care
Learned how to do it..but there's noooo way I can fit a full sized spanner in the space of the engine
Hi, I bought these sensor but the denso 234-4445 sensor doesnt fit in my car, the connector is male, i need a female connector. what can i do?
What vehicle is that what year?
Are both O2 sensors the same on a 2001 subaru legacy?
No they aren't the same.. I think the front would be a Denso 234-5003 and the rear would be a Denso 234-4132. I'm pretty sure for an automatic car. Double check the part numbers to be sure and if you have the 5 spd it may also be a different part number.
amzn.to/2WUuVCs Air and Fuel Ratio Sensor
amzn.to/2A52pFc Oxygen Sensor
Is this the same for replacing them on an '07 Forester?
Yes it should be pretty much the same for all Subaru's except if its a Cali emissons car At they have 5 sensors or if its an earlier year it will be farther back on the exhaust rather then right near the passenger front tire.
@@TheDIYGuyDOTnet How do I know if it's a Cali emissions car? Thanks for the response too
@@jonpaul748 There is a sticker that will tell you . Most have them have it right on the top of the radiator support. If its not there, then it will be on the under side of the hood. Some like GM have it on the intake box itself. You could also peak under the car and get to see how many sensors it has. It will have two AF sensors two oxygen sensors on each bank /side of the engine locations will be the same as in the video and then one once both banks/ sides come together/ meet into one pipe.
heat sensor shield and clip to hang with ,you better get something extra for the $140 price tag
This is an explanatory video that I thumbed up, but it has the usual problems DYI videos have: my 2010 Forester's pre-cat sensor tilts at about 30 degrees to the right. Sensor sockets don't fit--far too tall--and the sensor's tilt makes getting tools to it nigh unto impossible. My 22mm wrench is too long; it interferes with the engine bay sidewall or when flipped leaves only about one inch of movement and no way to get leverage down there. I can't budge the sensor without leverage.
My crow's floot goes on but there's no room for a ratchet (see above about the 22mm wrench) and using all the extensions I have in order to clear all the crap in front of the engine still isn't enough and makes for a wobbly tower that so far proves impossible to engage the foot. I hate to spend the 500 bucks a shop wants to replace the sensors, but....
It might just be easier to drop the manifold. Its not difficult and should just fall right down. I know what you mean about the spacing up in there. Spend less time just unbolting the manifold from the block than trying all sorts of ways to get a wrench on there.
buy the tool 10 bucks use a long extension bingo get it drom the top of engine
Hey long do you have to do a Drive cycle
Once you have let the engine warm up to operating temp you can do the drive cycles as you drive the car around. You don't need to complete the drive cycles unless you need to pass emissions right away. I did them to ensure all the readiness monitors were ready to ensure the car would pass emissions and that the check engine light wouldn't return. A drive cycle is driving around at about 25-30 mph. Go up to about 35 to 40 mph a few times before slowing down to a complete stop. Accelerate from each stop in a normal fashion-not overly conservative, but not like you are racing. Once you have done that you can get on a highway using 1/2 to 3/4 throttle acceleration to enter the highway.
When you have accelerated up to around 60 mph or so maintain a steady speed of 55 to 60 mph for a minimum of five miles. You can use the cruise control to help you maintain speed. Find a nice, long off ramp to exit from the freeway. As you exit, take your foot off of the accelerator and let the vehicle coast down until it stops under its own power as you complete your exit from the freeway. Do not use the foot brake and do not shift gears until the very end of this "coast down" phase. Once off the highway you can pull in to a parking place and let the engine idle for one to two minutes and then shut it off. Some cars want to see more key cycles (shutting the car off a few times during the process) in there or more city driving. Each car is a little different on how long it take to do a drive cycle, key cycles. If you don't have an OBD2 scanner you won't really know if you completed a drive cycle as you can't check the readiness of the monitors. amzn.to/3duMtKT Hope that answers your question.
TheDIYGuyDOTnet I am in ca the only one is on is the 02
@@TheDIYGuyDOTnet is
Ohhhkay... mine is a 2002 but looks the same to me... except the parts don't match. But thanks for the video.
Pregunta? Estos sensores son los mismos que lleva la subaru legacy 1995 ej20
Is this the same as a p0030 code?
Is this a 4 or 6 cylinder?
Michael Butler 4
Same process for a 05 Outback XT?
It will be the same for almost all Subaru's only difference may be the location and if its a California emissions Subaru where it will have double the cars and sensors.
Everything falls apart for you. The sensor middle clip doesn’t just come out, I ended up ripping it out after 30 minutes, and the actual sensor will never come out with an open end wrench. The video is a good explanation though. Its just way harder than you make it look.
I was thinking the same thing, but he mentioned that the customer had recently replaced them, so the ones he took out hadn't been sitting there that long. I looked this video up because I need to do the same thing. I'm sure it's going to be way more difficult then he made it look.
I wrench is the wrong tool for the job in that tight space. Use a crow's foot socket on an extension to a ratchet.
No it is not. Don't say that or people will end up ina bind if they cant get ahold of that. The car isnt rusty so its not needed the sensor shouldnt be that tight ever, So youre not the almighty car guru coming in telling him that, So idk why you even commented that plenty of people got the job done with his advice so clearly it isnt the wrong tool for the job Whatever works works
I had over a year I am looking for mine
wow 210k miles.. i need to do mine too.
❤👏🏼👏🏼👏🏼👌🏽
2015 Forester is soo hard to get clips dcd
A few extensions and a crows foot works just as well.
Yes good point. I forgot to mention it in the video but I did add it into the write up when I was typing it up. Although sometimes using the extensions and crows foot will cause you to loose the needed leverage to start to loosen the O2 sensor.
does anyone know the location of post cat sensor on the 2.5 turbo engine i only see one sensor cant locate the other
Not sure what year or model you have but there should be one right at the end of the engine exhaust header right before the uppipe and then the other should be right at the cat in the downpipe before it meets the mid pipe.
O2 Sensor P/N : 7:20