Either that or check the EVAP canister for leaks

 

I've fixed this several times. It's one of four things:

1) Blown Fuse
2) Cracked pipe from pump to valve
3) Cracked/leaking vacuum hose to the combi
4) Blown pump.

This happens with cars that drive in below freezing temps. The air pump pumps in exhaust gas to be recirc'd for emissions purposes. If it's cold enough out, the hot air will condense in the pipe between the pump and valve. Then it runs down the pipe into the air pump and freezes. The next time the pump tries to run it *should* blow the fuse because the pump is iced up. Sometimes it doesn't and the pump burns out.

Check the fuse. It's in the e-box. I've fixed two cars by just replacing the fuse. In those cases, the pump froze and blew the fuse. The car can then no longer turn the pump on, so eventually the ice melts and you can just replace the fuse and everything's good. Sometimes, the ice melts in the pump and if the timing is right, it can short the pump (blow it) out the next time it's ran.

 

i had that code, and the MAF was backwards[:'(]

so check for stupid stuff like that too,

 

lol...how'd that happen? Doesn't it have an arrow showing the direction of airflow? [:-]

 

yeah, i had just got into audis and didnt know anything "retard"
i pulled it off and while putting a cold air on the car just put the maf in backwards[:@]
but hey, it did give me that same code