As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ON FLIGHT, PASSENGER DOOR ANNUNCIATOR ILLUMINATED IN FLIGHT. THE CAPTAIN FOLLOWED PROCEDURES TO LAND AT AN ALTERNATE FIELD TRI. CREW INSPECTED DOOR AND FOUND ANNUNCIATOR GAVE FALSE ILLUMINATION. THIS ITEM WAS DEFERRED. THEN PROCEEDED TO FINAL DESTINATION. STILL AWAITING MORE INFORMATION TO COME AT A LATER DATE.