Code 2411

[Brandon Handy]

Dear Quattro Fans.  I am also a quattro driver.  I loved my new car so
much that I went to work at an Audi Dealer selling Audi's.  My car is a
little older a '93 90 Quattro CS Sport.  A coupple of days after I
picked up my car, The Engine light went on.  I learned how to hook up
the jumper wire under the fuse box thanks to some of you.  The code that
the computer flashed back to me was 2411.  I looked it up and it said it
could either be a sensor of some type or a faulty vaccume hose.  I was
just wondering if anyone else has ever experienced this and what you
found it to be?  The light doesn't come on around town.  It only comes
on when I'm driving on the freeway usually in the middle of construction
zones when I have to reduce my speed without down shifting.  Hopefully
this sounds familiar to someone.
Let me know what you think.  Thanks
Brandon.