As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED INTERMITTENT PASSENGER DOOR WARNING AND SERVICE DOOR CAUTION MESSAGE DURING DESCENT. INSPECTIONS OF THE PASSENGER AND SERVICE DOOR WIRING HARNESSES FROM FUSELAGE TO DOORS WERE PERFORMED. NO DEFECTS NOTED. OPERATIONAL CHECKS OF THE INDICATION SYSTEMS WERE PERFORMED. OPERATIONAL CHECKS GOOD. THE AIRCRAFT WAS RELEASED FOR SERVICE.