Code 12
WARNING: This page is about a different car, the 1989 Ford Ranger, 1989 Ford Pickup, 1989 Ford Cab & Chassis, 1989 Ford Bronco II, and 1989 Ford Bronco. However, it is still accessible from the selected car via links, so may be relevant.
Check brake fluid level. If fluid level is okay, replace control module, if fluid level is low, refill fluid and check for leaks.