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Install the second oxygen sensor for the catalytic converter.


DolSquirrel

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Greetings, everybody. I am consistently experiencing difficulties with the post catalytic converter oxygen sensor in 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.

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

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