I need a NOx senser

[scubaking]

I have a 2003 a4 2.0 FSi. I purchased it used a few months ago and the engine warning light has stsarted coming on and going off. I put it into a garage for servicing and they told me the likely cause (although not 100% sure) is that I have a faulty NOx senser. Audi want £300 for a new one.. I have tried to source from partfinder ect but to no avail. Any ideas where I can get one??

All help or advice most welcome.:biglaugh:

[Huweth]

try GSF or ECP
http://www.gsfcarparts.com/
http://www.eurocarparts.com/

If you can find a person with VAGCOM they should be able to get the fault code that will tell you what is actually wrong.
http://www.vwaudiforum.co.uk/forum/showthread.php?t=5319&highlight=vag+com+locations