Beiträge von css03038

  • N43 - es nimmt kein Ende mit den Problemen

    Hi.


    I had 2C7E. Lambda 2. It's inside NOX.

    I belive that your problem is only NOX.

    It's easy to change it even by yourself if you can find a ramp.

    Also if you have a friend with the same car you can swap the NOX and check.


    I fyou want write the last 7 digits from your VIN number so i will be able to check if the NOX and the 02 are in one sensor.

  • N43 - es nimmt kein Ende mit den Problemen

    Yes.

    Through obd port and reprogramming.

    I had the choice to delete only NOX or only 1st or 2nd post cat O2 sensor. (The cost was the same).

    So i decide to delete the NOX and the 2nd post cat O2 sensor (which works together through the same sensor) because I want to keep the 1st post cat sensor alive to be able to check possible problems that maybe occur to the feature.

  • N43 - es nimmt kein Ende mit den Problemen

    Hi again.


    First of all and very importand as Christian_scirocco told me

    ******** In some e90 the 2nd O2 sensor is builted-in in the NOX sensor *******


    So, after a lot of search I came to the conclusion that I had 3 options.

    1- Just to buy another new NOX and keep it until it going faulty again

    2- Replace the faulty O2 with NOXem and change the position of the sensor but with risk to take again fault for O2 sensor after some klms even if NOXem make it job for NOX sensor. (cost 350€)

    3- Delete NOX and O2 sensor. (cost 200€)


    Finally I decided to delete NOX including the second O2 sensor.

    The reason is that to delete NOX is not different from replace it with NOXem and this because both methods give the same results. They both fool ECU unit. NOXem provide a value that ECU want to read and it's not true (so you cannot understand if there is problem with nox cat) and NOX+O2 delete just say to ECU to do not use the NOX and the 02 sensor.

    Also I have to say that if someone decides to delete NOX sensor then also have to unplug it.


    The good news is that I don't have check engine light and the car now working totaly smoothy.


    I hope that my post will help other drivers.


    Thank you very much Christian_scirocco for your valuable help!

  • N43 - es nimmt kein Ende mit den Problemen

    Hi again.


    I booked an appoitment for totally disable of nox sensor and O2 sensor 2 bank 2.

    After a search I understoond that that the car has 2 sensor before pro-cat, 1 sensor between pro-cat and cat and one after the cat with double role (nox and O2)


    From all this thread I didn't understand one think. You replace your Nox with the noxem at the beggining (#1 post) but you didn't solve the problem.

    Then on #185 post you wrote somethink about Bimmerprof and that they didn't helped you.

    My question is that you installed the emulator from the begining, so why you didn't solve the problem and you lost about one year and a half?

    Probably I missunderstoond something from the previews posts.

  • N43 - es nimmt kein Ende mit den Problemen

    You are totaly clear mate!


    I think that is difficult to find someone in greece who can make the procedure with the emulatora.

    Probably i will replace the nox and try to put it in different position as i saw to your photos.


    5 months now we cannot found the problem!

    I hope that thisi is the problem.


    When i finish i will write to inform you!


    Thanks a lot for your time and for your help!!!

  • N43 - es nimmt kein Ende mit den Problemen

    Ohh very quick responce!


    My problem is that i take error code p114c (Post Catalyst Fuel Trim Via Oxygen Sensor System Too Rich Bank 2) through my obd2 scanner (2C7E through bosch scanner).

    The mechanic told me taht there is problem on o2 sensor after cat and we have to replace it and also that my car has 2 o2 sensors before cat and only 1 after the cat.

    So we replace the 2nd o2 sensor but nothing change.


    So i read here that there is a 2nd o2 sensor which is buildedin to the nox sensor as you wrote above

    We didn't knew this!!!


    From your photos i saw that you fix some cables on nox and you move it more "out" from the exhaust.

    The problem was tha cables, the sensor, or the location that bmw placed it?


    Today i will go again to the garage to show the photos that you upload.


    Thank you.

  • N43 - es nimmt kein Ende mit den Problemen

    Hi to all


    I'm Greek and I don't speak German, so I write in English.


    I bought an E90 320i LCi in September 2022. I have had a check engine since day 1. When I clear the code it came up every 100-200 km. The error is 2C7E. This is the only error I have.


    I changed the o2 sensor after the catalytic converter and the 2 o2 sensors before the catalytic converter with no success.


    If I understood correctly, you solved your problem.


    Because I can't understand very well the solution by using google translate, can you let me know what exactly did you do?


    If it is easy for you to write in English.


    Thank you.