Ditto what Dub said.

If it is "flashing", that is NOT a good sign. The only time I would drive on that would be to get it to the shop.

The airbox doesn't have a drain so that is fishy. The only other close plumbing I can think of that runs to that is from the intake that runs to your passenger valve cover. That needs to breather, so if it is getting "too much" breathing without a line/filter, it will run rough.