I did try the "key dance" method of retrieving error codes - and it does work. Thanks to all. I also discovered that the Actron CP9690 scanner has the capability of hooking up to a 1995 Chrysler Concorde's/Intrepid's OBD1 connector.
Actron includes in its CP9690 kit ($228) the Chrysler SCI connector - which works on most 1995 Chrysler/Dodge/Jeep vehicles - but NOT on the Concorde/Intrepid/Vision/New Yorker. What's needed is the Chrysler LH connector, which Acton sells as accessory item 70142 ($35 from Summit Racing). See attached photo, which is from the Actron Owners Manual.
INNOVA scan tools has the same Chrysler SCI connector included in its OBD1/2 kit - but it does NOT offer the Chrysler LH connector wire as an accessory.