As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE AT 25,000 FEET, THE CREW RECEIVED A DOORS LIGHT ON THE RED WARNING PANEL. THE CREW DESCENDED AND THE LIGHT WENT OUT AT 13,000. UPON ARRIVAL AT CLT, OUTSTATION MAINTENANCE INSPECTED THE WIRING AND CLEANED THE MAIN CABIN DOOR PROXI SENSORS IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 52-00-00. THE AIRCRAFT WAS THEN PRESSURIZED WITH THE CREW AND NO DEFECTS WERE NOTED. THE AIRCRAFT WAS THEN RELEASED FOR SERVICE.