[David89]

Hello,
I have a question:
BMW E90 318i N43 slinik 2010.
There are the following errors in the engine control unit in the car:

30EA DME: DeNox catalytic converter, sulphurized
DME: Oxygen sensor before catalytic converter, signal lines

I have no experience with modern gasoline engines, but this is probably a problem with the nox sensor.
I heard that it can be removed from ecu?
Do you have any experience?
It is worth doing?
The second error is from the probe in front of the catalyst and you will probably need to replace it even when you switch off the NOX sensor in the car? I'm right?

In this car is the Siemens MSD80 or MSD81 ECU.
What is the read/write this ecu?
Is it possible without a problem through Kess clone via OBD?
Any experience?
Please, give me some tips
Greetings,

[bmwcoder75]

Nevermind.........

[Twoone]

Maybee you can look at this NOx emulator from bimmerprofs.
   

[Stratofortress]

The NOx sensor has failed resulting the 30EA fault code and should be replaced. The other fault code registered merely reflects that fuel mixture is not balanced due to the NOx sensor fault.

I strongly don't recommend to program the NOx sensor off as you will lose the unique characteristics and performance of the lean mixture engine and eventually destroy the NOx catalytic converter. Instead, I would either replace the NOx sensor with new one or install the emulator suggested in earlier post. My choice would be to get an OE NOx sensor and repair the car, unless the NOx catalytic converter is already finished.

[bmwcare]

What VIN?
What are Code numbers of both codes?
===
There appears to be confusion on this thread about Cat, Oxygen Sensor & NOx Sensor.

[David89]

What VIN?
What are Code numbers of both codes?
===
There appears to be confusion on this thread about Cat, Oxygen Sensor & NOx Sensor.

Yes thats right.
I think about nox sensor off only, oxygen sensor wil be replace.

[Node]

I personally strongly agree with Stratofortress: "I strongly don't recommend to program the NOx sensor off as you will lose the unique characteristics and performance of the lean mixture engine and eventually destroy the NOx catalytic converter.".
And I think you misunderstand what "removal" actually means! No one will remove NOx control as such from the engine control software. What will be removed will only be registration of the related error. So basically your engine will run in failsafe mode in regard to NOx. Just no errors will be registered.