As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE -PASSENGER DOOR- WARNING MESSAGE ILLUMINATED CLIMBING THRU 8000 FT. THE CREW FOLLOWED THE QRH, RETURNED TO CHS, AND LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE PASSENGER DOOR HARNESS ASSEMBLY. ALL OPERATIONAL CHECKS WERE GOOD. THE AIRCRAFT WAS RELEASED FOR SERVICE.