[s5s]

Hi, I was getting a nox sensor heating error code (30DC).
I replaced the nox sensor on my E90 330i with a brand new OEM part which isn't cheap. I then cleared the error codes and reset the adaptations with BMW software. Not long after (a couple of weeks), the same error code is present. I did the work myself as it is DIY-able and there are YouTube videos showing what to do exactly so I know the sensor got changed with an OEM part.

I checked all fuses under the glove box. All of them are intact. However, I bought the car second hand and I don't know if the previous owner removed any fuses. Would you be able to help me identify the fuse for the NOx sensor heating on E90 330i 2009? I couldn't figure which one it is and if it has been removed (which is likely given the NOx sensor I removed was a Chinese knock-off then this might be causing the lack of power to the heating element. I found the below info but there does not seem to be any fuses for the NOx sensor:

https://www.google.com/amp/s/fuse-bo...uses-and-relay



Any help of what else could be causing this or ideas of what to check and how to troubleshoot would be much appreciated.

[s5s]

Anyone?