WIRING new PROBE for NOX sensor - BMW E91 engine N43

Wiring new probe for NOX sensor
#NoxSensor #Fault30EA #DiagnosisMSD80 #NoxCatalyticConverter #DeleteEngineAdapatations #BMWE91 #BMWN43
- BMW E91 2008 Touring engine N43B20A
- Fault code 30EA: nitric oxide catalytic converter, sulphurized
- Hunting the cause of the misfires!
- Forced desulphation session and deleting long-term fuel trims are done after new parts.
- Re-learning process is still in progress...
- How to Diagnose BMW MSD80 DME with INPA and ISTA-D software
- Diagnosis of the NOX Catalytic Converter with INPA!
- Fuel injectors have been leaking for a long time; Cause of NOx Catalytic coverter loss of efficiency?
- Resetting adaptations with the INPA program will also reset the calculated content of sulfur level.
- This causes that, the calculated content of sulfur level will recorded to DME will be incorrect
- it can be harmful to the performance of the NOx catalytic converter
- ISTA-D will not reset sulfur level of NOX Catalytic Converter.
- Delete the old DME adaptations, using ISTA D and create new adaptations, using INPA
- Chemical tests, Integrators, offset type LTFT, multiplicative type adaptions LTFT, opening time, flow-rate data, electric charge, Voltages,
Learnbits, adaptions, Homogeneous mode, stratified charge mode, Idle and partial load
Let’s continue with the next episode! Stay tuned!
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Watch whole BMW E91 with N43 Diagnosis & Maintenance -SERIES from here:
• BMW E91 - Diagnosis an...
Also N43 MOTOR rebuild -SERIES from here:
• BMW E91 N43 MOTOR REBU...
Also POWERDRAIN rebuild -SERIES of BMW E91 with engine N43!
See the whole SERIES from here:
• BMW E91 - DRIVETRAIN R...
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My purpose is to encourage people to do things themselves!
Plus, this is a nice hobby for myself and at the same time I have the opportunity to save a lot of money by doing all the maintenance myself!
I’m not a professional with cars or motorcycles, I just want to learn how to do things myself.
If you do this service yourself, always check the correct instructions in the official service manuals. This is just my way of doing it!
Jani Voutilainen
You can follow me also in:
/ voutilainenjani
/ jani.voutilainen
/ janivoutilainen
Keywords:
BMW
DIY
Wiring new probe for NOX sensor
Learnbits
Delete adaptations with ISTA-D
Re-learning adaptations with INPA
Fault code 30EA
NOX system
NOX sensor
Diagnosis NOX catalytic converter
Diagnosis fuel Injectors
Nitric oxide catalytic converter sulphurized
How to Diagnose BMW MSD80 DME with INPA software
Fuel mixture
Engine vibrations
bimmerprofs NOXEM
rough run
annual maintenance
car service
how to

[@grzegorzzalewski5580]

I also have a bmw e90 n43 good that you upload these videos

[@JaniVoutilainen]

You are wellcome 😊

[@user-lp8ro5lj8x]

Is it possible to delete NOx sensor from the DME ECU by remapping it? Any issues with that?

[@polariscon75]

Hi, I think last learn bit for adaptations is related to probe heating, couple times start cold and leave on idle until warm up. It works for me anyway.

[@JaniVoutilainen]

I also think that requires driving now. This car project is currently on break when it is -30 degrees outside. I have to wait a little better weather for the project to continue. 👍

[@stephenmeanley7096]

i changed my nox sensor n43 got aftermarket nox due to heating element it reset using ista but then 2 days later yellow engine came on again, would it re set it better if i just changed the probe and kept the bmw control box. because ive heard they dont like aftermarket nox sensors. thanks

[@MS-we4wi]

I just installed BMW standard tools so I can install and use ISTA+ to reset nox adaptations. However when I open INPA my n53 engine is not there, also no n43. Do you know if this would be a problem when using ISTA to reset adaptations? I have never used INPA or ISTA so I would really appreciate your answer.

[@pavelhorak1888]

Hello, I tried this last year with the same problem on my N43 318i. My experience is: you must replace deNOX cat (in Czech Republic by JMJ brand as aftermarket - ~260€, remove the whole exhaust pipes, cut off the old denox cat and re-weld the new one ) and than you can use your re-soldered NOX probe and it will works like with OEM parts. Because the storage of denox cat is damaged by years of storaging of soot. Soot is chemically acid and fatty. And this 2 things kills the precious metal in your old original denox cat. LAST CHANCE FOR RESCUE THE DENOX CAT IS: remove exhaust pipes, cut off the denox cat and flush him with kitchen detergent or flushing liquid for diesel DPF and pressure water, weld it back. *But you should to buy a NOXEM-130 and fix that nightmare forever. That's pretty cool and easy solution of this problem and generally you will save your money.* Cheers!

[@tlendiel]

Hello Pavel! May I ask you please, I have N53 and experiencing rough idle and jumping RPM’s + errors in DME about aging catalytic converter. I have recently bought NOXEM, but didn’t install it yet. What was your experience with the NOXEM?

[@pavelhorak1888]

@@tlendiel Hello, I have noxem for a 3 years (maybe), works very well without any prolems. After 1 year the oxygen sensor (LSU 4.9) which is mounted in NOXEM module, stopped working, so i bought another one and improve it with add a connector (soldering on wires) for easily exchange in the future. I fully recommend to you. This oxygen sensors (lambda probes) are very sensible in that position in the exhaust (too far from the engine) because water condensation and that's main problem of sporadic damage. But new oxygen sensor cost 100$ once a 2 year. Have a nice day.

[@thorstenpannwitz2345]

Moi! Thorsten from germany my mum´s from Finland ;-). So i have a sharan 2010 with dpf. I got the no start countdown because of Nox problem. Rest ist 750km. Today we made a new dpf in because the flextube was damaged and killed several Adblueline, whiles blasting on it till we found the problem. We tried several times the testcycle to clear the error but with no luck but also no error appearing. yes I delete before the nox sesnor error which appeared some weeks ago (and it was severel times before). So i thing it is the sensor right? So i have a unit from Mercedes brand new orign (the scond hand seller sended me a wrong unit i kept it because he didn´t had the vw unit anymore he was offering me first and price was o.k. for a new one). My questions : Can i take the probe from the Mercedes unit (also Continental 5 pin) an dweld the wires on the ecu of VW as you did ? Does someone know if i have to reset the adaption for VW too? And in general what about the protocols from the units are the maybee all the same , so what are the difrences between Merces/BMW/VW etc. Units? I have a 5 pin output Unit. My motor is 140 HP/ CFFB 2.0l ~1800000 km.

[@drm0161]

thank you for your videos, they are interesting and instructive. i have e81 116i 90kw with an n43b20 engine and 120,000km. from the 100.000 km periodically appear various errors for the nox sensor 2af2, 2af4, 2af6, 2af9 and sometimes errors for rich or poor mixture on the lambda probes. since winter errors 30c1 oil pressure and 29e0 fuel-air mixture are common. i talked to three mechanics and each said differently but they are all undefined. I decided to drive until it fell apart or stopped somewhere. all parameters are fine, except for the smoothness in the cylinders, which is sometimes over 200, and should be -200 to + 200. and the engine error light appears when a 29ce or 29cd combustion dropouts error is detected in the 2nd or 1st cylinder. probably accumulated carbon deposits on injectors, because it helps a lot when I put liqui moly injector cleaner. cold engine runs restlessly from the moment the revs drop to 800 and a few minutes. greetings and big hello from croatia!

[@JaniVoutilainen]

Thanks! I hope you find a solution! 👍

[@drm0161]

@@JaniVoutilainen there is no solution. The N45 / N53 is an unrepairable engine. it is a most complicated bmw atmospheric engine and required the right care from 0 km. now it is late. conceptually and structurally it is an engine like on (super)sports cars, but they are not driven every day and cover 2-3,000 km a year. most of these engines after 100,000 km are "irreparably destroyed" with oil change intervals of 30,000. it is an overcomplicated engine for everyday use and maintenance carelessness when they are "young". on mine I can replace all expendable parts, and there is no guarantee that it will work properly. it can happen that there is a problem like yours, with the head and block gasket, or some of inbuilt errors in MSD80

[@user-of9xi8fv3o]

pozdrav, have You find a solution? Iste greske ista stvar i kod mene.

[@aagetreffen]

Newer BMW’s are curious creations. When I bought my E91 it had a small exhaust leak in the flexi tube and a faulty pressure sensor on the high pressure rail. My last BMW was a E30, so it took some time and several hundred pages of technical data. Before I realized how much problems the software creates. I still run the original 2009 nox sensor. But I will be using Noxem when I change it. The amount of issues this engine can compound within operating margins is astounding. And your problem might not even be related to the sensor or the cat. It can be other systems compounding errors trying to adapt within operating margins. And nox can interpreter the changing values as errors. I programmed the speedometer on my E91 to show the actual speed. It was only about 4% correction. But it made the engine misfire and shake. The transmission didn’t shift properly. And the diagnostic generated 3-4 error codes on the nox system every 5-10 min. And a lot of error codes in other systems as well. I tried deleting them and re adapt the new values from a 4% speed correction. I managed to get rid of half of the errors. But I gave up and adjusted the speed setting back to stock. All the errors disappeared. And it started running just as it was supposed to.

[@JaniVoutilainen]

The NOX system with NOX Catalytic Converter is a package that is not easy to diagnose. So many variables that affect many different things ...

[@adrielmaximiliano3952]

@Keanu Kason definitely, been using flixzone} for months myself =)

[@czystywojownik1528]

Hi, did you have film with adaptation and coding new nox sensor?

[@JaniVoutilainen]

Yes, there is a video for it! You should watch the whole series related to the topic. 👍 kzbin.info/aero/PLFua3BdQQbC-7XmVMgLvFcSVvDBIi71nn

[@wrongmark]

Hi Jani. Have you considered a Nox Emulator? I fitted one a few years ago to my N43 and the error you mention hasn’t returned. My understanding is that it now cycles through the stratified charge modes etc as normal.

[@JaniVoutilainen]

Hi! I try to fix this long lasting project with original setup. If it is not possible, then I will, maybe 👍

[@wrongmark]

@@JaniVoutilainen I was thinking of trying the same but my usage of the car is likely to mean that the issue keeps returning. With traffic and constant speed limit changes (with cameras), you’ll be lucky to maintain a speed of 120km/h in the UK for 5 mins, let alone 30.

[@ccocoana4479]

@@wrongmark hello guys! I have the same problem and thinking to try a nox emulator. My N43 have 207k miles, start good in cold weather, runs even but use lots of petrol and after 4500 5000 rpm behind me is black cloud.... If you said that nox emulator works, I will buy one. And yeah, it’s hard to maintain a 120km/h in UK...

[@burnfrost756]

Hey boss! I changed the probe of my NOX sensor 3months ago, all things went well since I ruined My FRM last week. After fixing the module the code 002AEC NOX SENSOR, SELF DIAGNOSTIC. appears.ISTA+ shows all the NOX sensor data are returned to my DME normally, and theres no other code exist. What's more,the engine works in the HOMOGENEOUS mode ALL THE TIME. The oil consumption gets high again.I’m confusing about this problem can you give me some tint about this? Appreciate!

[@JaniVoutilainen]

Seems that yours stratifield charge is not work if your consumption is not normal. Normally if there is fault codes related on nox system, it disable stratified charge. Check yours Nox catalytic sulfur status and make forced clean for nox catalytic converter if needed. Delete adaptations and re-learn those again. It takes some time when adaptations are Ok again. Hope you get it sorted out 👍

[@Patraulea91]

I don't have check engine Light on, but if i check my e90, n43, 318i, i got 3 errors, 2af2, 2af4, 2af6. Should i change my nox sensor? Thank you

[@JaniVoutilainen]

Those DTCs refer to the NOX sensor. I would remove the old NOX sensor, clean it and try again. If that doesn't help then you might want to try replacing only the NOX sensor probe. Less often the NOX sensor circuit board is damaged ...

[@vpcaptain]

@@JaniVoutilainen hi Jani excellent video - I have same problem with 85000miles similar codes to Tetin 2AF2, 2AF4, 2AF9 - before buying genuine bmw nox or NOXEM happy to try cleaning - what is the safest cleaner I can use on the sensor probe as I am aware it is very easily damaged - keep posting and thanks Rob - Scotland

[@Krtek004]

Hi @Jani Voutilainen and all fans of N43/N53, i have changed my Nox sensor on E90 325i with N53 at 1.8.2020. I bought aftermarket senzor by METZGER producer. Sensor cost me around 300€ including 21% VAT insted of 540€ by OEM. Due to covid situation and fact that E90 is my weekend car I have done only 4.000 km to this day. But stratified mode works well (y) I have checked a several times by diagnostic. Example of consumption: 125 km journey with avg 83km/h = 6. Trip back also 125, avg. 82 km/h = again 6. Another 130km trip from 200m to 1000m above sea level -> 8,3l/100. Trip back 6,5. On highway 130gps cruise control :) All has been on 100 octane gasoline.

[@JaniVoutilainen]

Well done! 👍 It makes big different for consumption if Nox system works correctly and engine use stratified charge.

[@Krtek004]

@@JaniVoutilainen Agree. at 90 km/h consuption is around 5,5l/100. With stratified mode is 4,2-4,5l/100. Thats represents around 25% consuption decreas. When stratified mode was unablen it was dificult to reach consuption under 9,5 even when I was driving slowly at highway.

[@mateuszpiatek2870]

I am just wondering why couldnt you just plug in the new probe to old sensor? The cables layout seems to be very same on all of them?

[@mateuszpiatek2870]

you just solder the same colours of cable to each other so just wondering what is the reason for just not simply plugging it in? I will face this job on saturday and want to make sure I do it right

[@JaniVoutilainen]

Nox circuit board and sensor can't just be plugged in. The colors of the wires are exactly the same in both and in the same order. The sensor can be ordered separately and the wiring is dimensioned in this style as in this video.

[@stefandjindjic1010]

Hey @jani, if you can help me: bmw3 e90, N43. I have these errors: 2AF4, 2AF2, 30DA, 29F4. Will it fix some of these errors if I change NOX sensor? Thanks in advance.

[@JaniVoutilainen]

If you do not have fault codes 30EA or 30E9, it would seem like a NOX sensor fault, but it's hard to say before reading / examining NOX sensor and Converter values with INPA software.

[@stefandjindjic1010]

@@JaniVoutilainen thanks for this. I changed NOX sensor and all codes are gone. But, now, I have only: '2A26' error code. It says 'catalytic converter'. But I am not sure if catalytic does not work. Maybe lambda sondas 'pre-cat' and 'post-cat'?

[@JaniVoutilainen]

Hi! Read this: bimmerprofs.com/2a26-2a27-nox-sensor/ I hope that you find the solution! 👍

[@stefandjindjic1010]

@@JaniVoutilainen thanks, I will check my catalytic to see if it is clogged or not or maybe it is burned. NOX is new, injectors are fine, lambda sondas follow one to another on INPA, but sometimes the value on both goes over 20 (it is from 0-1 always, but it just goes up to 20 or more on both sondas for a second and then go back to normal state). That's probably because of bad catalytic. What do you think?

[@khorvath74]

Cataclean helps a lot try it! www.halfords.ie/motoring/engine-oils-fluids/fuel-oil-additives/cataclean-450ml-616247.html it helped my BMW 2008 318i if you changed your NOX sensor use this once a year

[@evgasrx]

Check your thermostat, your engine temp is very low. After replacing readapt the engine with ista d.

[@JaniVoutilainen]

The water pump and thermostat were replaced in the car a little less than 5 years ago. The engine temperature stays between 90 and 112 degrees so it should be in good condition.

[@khorvath74]

this is the next step kzbin.info/www/bejne/j4XPZ3-nnatjh7s

[@JaniVoutilainen]

Hope not 😉

[@paweg4643]

Don't buy nox sensor from BMW. The continental nox board is lifetime. Just replace the probe. It is NGK NS11A. The colors of wires are the same. Good tip from Poland to cheaper repair.

[@SvenHazejager]

Hi Jani, first of all a big thank you for these videos. They are, in combination with bimmerprofs.com, a must-have for any N43/N53 owner. I was wondering a couple of things: 1. Did you in the end (before rebuild) get all adaptations OK? And then only with new BMW sensor or also with your rebuilt third party sensor? 2. Were you able to drive those 250.000km with original NOx cat? If yes this gives me hope that I can continue to use the original NOx system for a while (N43 at 130.000) before “surrending” to NOXEM. 3. What is your trick to get the desulphation going well? I do get 30EA codes and I did a burn session but it was really hard to keep going, basically had to drive 140 in 5th gear to keep temp high enough.

[@JaniVoutilainen]

Thanks! 👍 1. I haven’t been following the adaptations for a while now, but there have been problems with one of its adaptations. The 30EA fault code is still present even though the NOX sensor has been replaced with a new as well as a rebuilt NOX sensor. The car works great otherwise, no jerking and no running disruptions. I got a little tired of this problem so I’m waiting for a little inspiration for it again. I thought about having to clean the NOX Catalytic Converter physically. 2. The original NOX Catalytic Converter is still in place which has now run 283 tkm. 3. Should be able to drive a bit like "Traction" on all the time. In fact, it is advisable to drive in 6 gears (with 5 gears it is harder to keep the heat) so that the heat in the NOX system remains high. If the heat tends to drop while driving, you can also apply the brake lightly from time to time while driving but keep the gas constant at all times.

[@SvenHazejager]

@@JaniVoutilainen short update: even driving long distances at 130+ on our holiday to the south the 30EA kept reappearing. I got tired of worrying about this so I installed NOXEM last week. Re-adapting was a breeze. The engine now no longer sounds like a diesel and is much more smooth when driving off: sometimes our clutch was shuddering but that problem seems to be gone.

[@laurentiu.panait2536]

How did you perform the readaptations my guy?