Try this before taking it in, as I've heard this one as well (though not in conjunction with any codes):
Check your battery terminals for any corrosion or buildup. If you see some, take some vinegar or some sort of acidic cleaner and pour a small amount over the terminals and connectors. Take a paper towel and clean them up good.
Now for the fun part.
Take a razor or knife and scrape the terminals and connectors to where clean metal is showing. Before you put them back on, spray them with some electrical corrosion blocker or electrical grease (can be found at auto stores).
I'm totally grasping at straws here, but give it a try, especially if you've a lot of corrosion and buildup around the battery and you are still on the original one or one that's seen more than a couple years duty.
Short of this or the camshaft position sensor, I don't know what else to tell you apart from hauling the car in to your local mechanic or Ford dealer.
Good luck.
