hey guys! i'm a new guy here and i was looking for some help for my audi. I got a CEL last week while driving home and just took it to autozone to find out the problem. The decoder gave me a code of P0411 and it said that the secondary air injection system is at fault. I was wondering if this was a problem i could fix on my own or do i actually have to take it to a mechanic?? I'm planning on taking it to Mammoth next week and need it to be running in good condition. If its possible to fix it on my own, could someone please walk me through the steps? Thanks in advance!

oh I'm driving a 2004 1.8t A4 btw =)

 

If its a secondary air fault then its probably a torn vaccum line to the combi valve.
The combi valve is the the silver looking canister on the back of the cylinder head, check the line going to it.

 

https://www.audiforums.com/m_722131/tm.htm

https://www.audiforums.com/m_731482/tm.htm