She found a Jetta that she can afford, and it's cosmetically in very good shape. It runs, but it sounds pretty rough, and it threw an engine code of P0171. From my reading on the internet, it doesn't really look like that huge of an issue, but I really don't know what I'm talking about here.

Any thoughts? Just from what I've given here, is it worth pursuing, or should we run away?

http://www.engine-codes.com/p0171_volkswagen.html