As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN FLIGHT, THE CREW RECEIVED A PASSENGER DOOR OUTER HANDLE WARNING MESSAGE. THE AIRCRAFT DIVERTED, WHERE ON CALL MAINTENANCE INSPECTED AND CHECKED THE DOOR HANDLE MECHANISM. THEY OPERATED THE DOOR SEVERAL TIMES WITH NO WARNING MESSAGES AND THE AIRCRAFT RETURNED TO SERVICE.