Clearing Codes: Notes
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2003 Ford RV Cutaway, 2003 Ford Econoline, 2003 Ford E550 Super Duty, 2003 Ford E450 Super Duty, and 2003 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
DO NOT disconnect vehicle battery to clear DTCs. This will erase operating information from keep alive RAM. To clear keep alive RAM, perform KEEP ALIVE RANDOM ACCESS MEMORY RESET PROCEDURE .