As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENROUTE, THE CREW RECEIVED A MAIN CABIN DOOR RED WARNING PANEL LIGHT. THE CREW FOLLOWED THE QUICK REFERENCE HANDBOOK AND LANDED AT THE NEAREST SUITABLE AIRPORT, ILM. ON DESCENT INTO ILM, THE INDICATION WENT OUT AT FL 180. THE AIRCRAFT WAS THEN FERRIED TO PIT. MAINTENANCE INSPECTED AND ADJUSTED THE DOOR CONTROL RODS IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 52-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.