Thank you for sharing the repair kit link. As we can see from iv3-skoda's experience, who successfully resolved the issue with a new sensor for about 275 euros, replacement is a working solution. If you decide to test the repair kit from AliExpress, it would be very helpful for the community if you could share your results and experience with it.

Hey guys i have exact the same problem! 2000

And 20009 error. My service guys wants to change nox sensor for original one its like 1k cost. I saw below the guy bought from local store for 275 e. Im planing to buy exatcly same

Part as he posted. Any updates ?

Where is the NOx sensor located. I cannot find it on my 2018 skoda octavia 2.0TDi