You are incredible. Thank you so much for helping all of us with e46’s. My is a 2000 e46, 328-M52tu engine. Thank you again for all you have done for me. You should be a BMW head Mgr. in any BMW Dealer. Thank you. Tonio.

Great video! Always enjoying your DIY videos!

love watching those e46 videos!

Thanks again for good video. I have similar tool but it made by Kamasa tools. It was great for replacing precat oxygen sensors.

Thanks for the videos. Got a P0171 code and just replaced my CCV and didn't go away. Watching you vids I think its most likely a Pre-Cat O2 sensor. Especially since I don't have the P0174 to go along with it. Thanks again all your videos have been helpful over the years!!!

Both versions of the 0² socket are at Harbor Freight. I got the one he recommended against anyway and it worked fine on my E46 0² sensors using my 1/2” breaker. You have more than 30 days to return it at Harbor Freight even if it did fail

Hey thank you for the great information. I've seen a few other videos on doing this job and you're the first one that told us to put the anti seize on the threads. Good to know. But I'm wondering if there's a trick or some way to get the other end of them off. I see that there are some little tabs on the plastic connectors but i don't really see any special way of undoing them. I see in other vids that they seem to just pull them apart. Is that it? Just grip and pull as hard as needed to get them off? (Holding them in the right place of course). I don't want to break them or rip out something while doing it. Thanks again.

Thanks so much for creating these amazing tutorials on BMW's really helpful you have saved me a lot of bucks just following your DIY, thanks once again. So the pre cat sensors are the same or matching pair so as the post cast ones as well when you are buying?

Hi, i watched your video but i am curios , are the post cat and the pre-cat sensors identical? do you know the part number for the pre-cat? i've noticed you've put it in the description in the post cat video. Good job with these videos, they are very helpful, thank you! Cheers.

Would you recommend removing these o2 sensors and spraying a type of cat cleaner inside them into the manifold in order to the catalytic converter?

Thank you you are Graig on the bmw you know everything and work easy for you thanks for u inf

Was there a heat shield in the way of yours? My 2002 M3 has a giant heat shield that has taken several hours to loosen, and still blocks the o2 sensor.

Thank you again........you are awesome! question? my E46 2003 heaters are not working. do you have any advice for me?

Are the connectors the same? The longer one goes to the front one and short one to the back?

I originally had a 492 code. I ended up replacing dried up lines on the air relay switch behind the manifold under the cabinet filter assembly. One hose wasn't even on and the other was cracked . After doing this and clearing the codes I drove my 2002 bmw 325i wagon about 25 miles and the check engine light came on again. However, the code is now 0430 low threshold bank 2. Any idea what might have cause this. I thought maybe as I looked at your video and seeing the sensors where in the same location as the secondary intake valve line the might be a connection

Hello. After replacing the oxygen sensors, do you have to put the computer to program? Well, I had turned on the check engine and after replacing them the check engine turned on again.

Does it matter which way the plug goes in? Because the wires can be flipped upside down and still plug in.

My 325i spent a few months running rich because of an unregulated fuel pump (replaced filter/reg) - is it worth renewing my front O2 sensors in case of fouling?

@50skid I am trying to find out what type of sensor I need. What is written on the box please. I can't seen to get a straight answer. So i can order a pair. Thanks for the help.

Hey's 50s kid love the videos, been a fan long time, but there is the silly question of are these upstream or down? thanks in advance

I dont know if the question has been asked but why did you go with Bosch v NGK?

Just got a P2231 code on my '04 325i, great video as always! Should be the same procedure, I'd imagine?

Do you recommend the car being cold upon removal?

What year is this BMW? I saw another video and he took the valve covers off in order to disconnect the sensor cables, whereas yours are close to the actual sensors. I have a 2000 e46 328CI, with 134k miles. Also, I would assume it's best to replace both, if you're going to do one, yes?

Thank you for video, both the sensors are the same length and type or different,

Hey man I have a 325i 2003 Bmw and it’s giving me a p0175 code Do I replace the sensor your replacing in this video?

50skid ,I have 2001 330i ,I have a code p0134 a this a bad sensor?

What are the precat 02 sensor part numbers for bosch? I have '05 325i e46 m54 engine. Varying answers online. Thanks.

So i'm kinda confused here. I am at rockauto and wanted to get a bosch and theyre saying both bank 1 and bank 2 sensor can use same o2 sensor... is that true ?? or do i have to make sure to buy different o2 sensors ?

Hello. What is P0130 in n46 engine. I only clean the lambda but still check engine

Just a heads up! Some of the comments are wrong on here as far as the sensors being the same part numbers. According to my research and I have an 325I M54 engine, the part numbers are DIFFERENT and are as follows: Bosch 17216 - bank 2 (4-6) Back Bosch 17215 - bank 1 (1-3) Front Or Bmw Part numbers: 11787523435 - cylinders 4-6 11787523434 - cylinders 1-3

Really enjoy your videos! Here’s a question for anyone including 50’s kid. I just replaced pre car sensors on my 02 325i but I’m getting the same codes P349,1351 and 1353 in cylinders 4,5,6 and misfire symptoms. I’m thinking it might be the oxygen sensor wire harness. BMW is telling me they don’t sell the wire harness and I’d have to buy new harness connectors (ends only) and make a new harness myself buy buying same gauge wire. Anyone have any experience with replacing the oxygen sensor wire harness?

Thanks for the help!! Next time could you show the product in detail so i can order the exact same one? Thank you for your work!

What size tool do you need? I'm bout to take mine.off but I'm borrowing tools from my boss

seems like a pretty straightforward DIY, I've been watching a LOT of your videos... best e46 series I've found. Bank 1 Sensor 1 is probably the first one you changed here, right? Mine is throwing a code, I think it's time to replace. Can you reference how to test an O2 sensor? I have a multimeter and a desire to learn, I'm just not having a ton of luck finding an answer.

Hey, which drill is that, that your using, seems really handy and I want to start doing more work on my E46. What's that name and model of that drill?

I have a 328 M52TU w/code P1477. I was told sometimes the oxygen sensor gives out resulting in 1477?

Hey man, for those wrenches to remove the oxygen sensors, are they a particular size?

Hi, does replacement for these pre cat sensors could fix this error? Bmw e46 2001 325i exhaust gas sensor bank 2 sensor 1 failed error p0135

I was gifted a 01 330i the 1st sensor of mine has the wire and connection point for the 02 sensor is fried it was left sitting on the headers so now I can’t connect a new 02 sensor any videos on replacing the connector

So for bank 2 is that sensor 1?

I have a 2000 bmw 328i standerd sedan & im wondering if there are the upstrem sensors ? & if so are they both the same ??& in the other vid about the post cat sensors , are thos the downstream o2 sensors ?? Please respond !! & love ur Vids!! Very useful.

Are both sensors exactly the same?

Nice use of the drill. Milwaukee would be upset though

Hey there 50skid. Thank you for all your videos. I am a new owner of a e46 2001 300i. I knew absolutely nothing about BMW's until I found your videos. My question is this.... Do you have a video on replacing the after cat o2 sensors?? I couldn't find anything in your video library. If not do you think you will be making one? Thanks again for all the great info.

They're both the same right? The 02 sensors. I wouldn't need to get a different type for either?

Is the post and pre cat sensors the same ?,

@50skid, when these o2 sensors go bad will they blow a fuse in the e box? Please help. Thanks in advance.

De quel côté et la sonde lambda . 1 pour 330i E46 ? Merci

I’m getting code p0154 I follow this right? Can you link to the o2 sensors?

Question: can you use the elongated socket to change out the O2 sensors past the cat, or do you need the other socket?

I can not for the life of me figure out which part number is the right one? Are all the sensors the same?

P1449 P0171 P2240. Any ideas on where to start?

My 2004 330ci doesn’t have that plug above it I have to take my engine covers off to get the o2 sensor out

I m having an o2 sensor issue. I disconnected the sensor. the wire in the connecter was pushed back on two wires. I pulled them out to spread the little tabs. I did not mark the location of each wire. so I went to check the other sensor and when i pulled to unplug all the wires pulled out of the connector completely . can anyone tell me from the sensor to the plug wiring. 2000 e46 330i bank 1 and 2 sensor 1. this is the first of the 330's and the 1 sensors are at the end of the header and the 2 sensor is under the rear footwell

Ik I’m late but where do I buy the sensor’s

Is it gonna increase my gasoline consumption if this oxygen sensor not working ? Hope u understand what i am asking. :D

Does anyone know the OEM for the pre-cat O2 sensor?

ANyone know? The manual says on M54 the sensors should be replaced at 100k. Would you do this or just wait until they fail? Also it says the whole exhaust system has to come off for the post cat ones??/

Bmw e46 316TI 2004 have 4x sonda lambda?

What’s the size of that socket bud?

Which one is sensor one and sensor 2 ????

Can Bad O2 sensors cause Limp Mode if a O2 Sensor wire is melted? Getting Code 58 CAN: Open Circuit to AGS.

Can this cause p2240 code?

My 02 sensor wires were just damaged and now I have the Trans Limp mode, could this be the cause? Can they be spliced ?

I'm getting only a P0174 code no 0171 so system lean bank 2 could it be a bad o2 sensor? or a vaccuum leak? which one is more likely

So thatsssss what that round thing is lol I've been trying to figure out

Are those upstream or downstream ?

hey i really need help with my 2005 x3 my car got no power when i step on the gas and when i go up the hill it wont make it do you know what wrong with my car?

Are both censer the same ...? For bank one and bank two

Hey, I was wondering if anyone knew what the part number is or what you call the wire you plug the o2 sensor into. It's the wires between the o2 sensor and the harness.

I did this today I couldn't get any of these socket but found crow foot sockets (idk what they are called in the states im from aus) But they worked amazing just found it hard to unclipped it

I change mine but why theres a smoke

Im getting Codes P0171 and P0174 on both my E46 and my E60. Ive done the smoke test and see no vacuum leaks at all. Can the O2 sensors be the issue?

this video no longer plays? Keeps giving "An error occurred. Please try again later. (Playback ID: sHSLfnxJr_WF8F8D)"

Does the sensor give an error code when it's faulty got a maf code but got a new one and the code is still there vacume leak or could this sensor be the culprit?

Hi mate I'm a Chilean living in new Zealand and I have my bmw 316ti 2003 and I have to change the oxygen sensor heater before cat and oxygen sensor before cat .. and I want to know if this video it's the right for me .. thanks mate

Does the M56 use the same sensors?

I drive a 2002 530i. I had P0491 (Secondary Air Injection System Insufficient Flow Bank 1). I replaced Air Valve but could not get SAS monitor to set. Next I replaced Bank 1 Pre Cat O2 sensor, P0491 code gone and SAS monitor set at FIRST cold start up(after idle 2.5 minutes), BUT I got P2096 (Post Catalyst Fuel Trim System Too Lean Bank 1) (but at least all monitors would set after running 1 drive cycle). Unfortunately I left the wire that plugged into the sensor laying on the manifold and the wires melted I got P0172 and P0132) after repairing, these codes are gone, but I STILL have P2096 and no monitors will set! So I'm back to trying to get SA monitor to set!!!!!!!!! Could I be getting too much air now that the valve is opening and letting air thru? SES is preventing me from passing Georgia emissions :(

Always the best DIY , Hey bro Today I got the P2240 B2S1 ! I swiped it with B1S1 still haven't get the code yet , but from Your experience could it be an O2 sensor, fuel sys or DME need an update, 2004 330ci.

I'm getting playback issues on this video..

Will it be similar on 2002 e46?

what is part number?

Is it the same for an e46 m3?

I bought eBay headers for my e46I know I would have a check engine light on but could I just run it with no O2 sensors and all four of the holes capped

which is the bank 1 sensor 1

"Reposition in order to get something off. "

I did it with out taking out the air pump ona 2001 330ci

which is bank 1 and bank 2

How can i know which sensor goes where

it's the first​ 3 cylinders it's that one

Hey Kid! What's going on with you?

Do you need o2 sensor?

Love your insight and video but for the love of god use more lighting. This o2 video was like watching you reach into the darkness and pull sensors out

Can I have the part number please? Thank you!

At least tell us the size of the socket?

5

look like a 40s kid

U talked too much for a simple job!

dude doesnt know what he's talking about, there are over a dozen different engines in E46's, most of which have different o2 sensor setups.