Is the Nox sensor with part number A 000 905 008 replaced by the A 000 905 9603 sensor 2? Is it installed after the cata

[GoodBoyCar]

The Nox sensor mentioned in Post#1 above, with the part number A 00 090 596 03, is sometimes referred to as Part 490.

The first sensor is positioned in closest proximity to the engine. The second sensor is the oxygen sensor located downstream. The location of the item will consistently be situated downstream of the catalytic converter.

[Bluewhaleeee]

Is Nox sensor 2 the one that corresponds to the component number I mentioned? Are you referring to the parts with the numbers A 000 905 9603 and A 000 905 00 08? Apologies for my significant confusion.

[Bluewhaleeee]

The numerical value 008 is equivalent to the numerical value 603. I think just a recently revised component.

[Bluewhaleeee]

I was unaware that there was a table containing listings below. I first believed it was just a schematic. Thank you for your assistance on both postings. I really appreciate it, my friend.