Where is the speed sensor located on my 2004 A4 Turbo 1.8 with cvt tranny?

What is your question?

There are two different speed sensors used on that year. I have the one that uses SU5454 part #.

What makes this problem better or worse?

It starts up fine but after 15 minutes the check engine light and the EPC lights alight then the car dies. Nothing running

How long has your 2004 Audi A4 had this problem?

6 months