Reading Diagnostic Trouble Codes: Notes
WARNING: This page is about a different car, the 2002 Ford Pickup and 2002 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
If self-test will not activate or TOOL COMMUNICATION ERROR is received, see TEST QA
under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article.