I suspect you got an unable to communicate error.
That may be due to a blown fuse that goes to the data link connector for the scanner.
Look in your owners manual, it may have a separate fuse, or it is often on the same fuse as the cigar lighter.
You may obtain an owners manual here for 1996 and newer
Fuse panels are listed in the "Roadside Emergencies" section.
https://www.fleet.ford.com/maintenan...ls/default.asp How to check fuses http://www.ford-forums.com/electrica...tml#post125472
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BroncoJoe19
2006 Alt Fuel Jeep (electric)
'98 windstar 3.8L
'99 Crown Vic 4.6L
'90 Full Size Bronco 5.0L
I'm not a professional mechanic, take my suggestions with a grain of salt, or a cup of coffee
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