One thing I don't like about OBD1 is that for two of those fault codes it does not state the date/time that it first occurred...& that info is in the control module...
The last one which did , was a fairly recent code...
Personally I would save those screen shots & print out & tell the dealer, cover your back as fault codes should not be there..even if it was an old one off fault they should check & wipe any before they sell on