I do not know of a good listing for failure codes, but would be very interested in a listing also. Do you not think that the majority of codes...at least a good portion of the codes...would come from a FMEA of all your most critical assets?...
I have attached an article I wrote on Failure codes a while back that may give you some food for thought...
Check if the drop down list can be made like a computer file system in order to group failures like: mechanical failures, electrical failures, etc...
It would be odd see the load jumping up and down during a forklift cavitation event!
The bottom line, she could surface problems you would not imagine, just by doing everything that is "verboten" in her ingenuity...