I had 4004 once yesterday and it seems like the entire que list was disconnected with that.
After that my postion jumped several 1000s ahead after a fast reconnect but maybe i was just lucky.
But i dont see 2002 as a real issue because of teh REAL issue is that EU half the server EU 12, US 24, JP 32) than ohter regions and thats the thing that bites EU player in the butt right now.
Thats the real issue for EU players.