Install the post-catalytic converter oxygen sensor.

[Bluewhaleeee]

Greetings, everyone. I am experiencing recurring post catalytic converter oxygen sensor malfunctions on my e90 2.0 petrol vehicle. If I decide to replace the sensor, is there any further action required to inform the car's system that a new sensor has been installed, or can I just change it and leave it as is?
Thank you.

[generic_user2]

Simply reset the problem code after the replacement component has been installed.

[Bluewhaleeee]

If the sensor is defective, might it potentially trigger further failure codes?

[generic_user2]

That is feasible I have seen it do such behaviour before.
BMW vehicles may exhibit several issues when a single component malfunctions.

[Bluewhaleeee]

The indicates that the Nox sensor is reporting ageing, but I am aware that it is a recently installed sensor, therefore it cannot be experiencing ageing. This situation is distressing and frustrating for me.

[dontito]

Are there any instances of information or fluid escaping from a confined space?

[Bluewhaleeee]

No inspection conducted for potential leaks.

[almamater78]

You should take into consideration the sender's statement that the income measured air is not in proportion at the output side.