As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THAT THE PASSENGER DOOR WARNING LIGHT ILLUMINATED DURING CRUISE FLIGHT. CREW DECLARED AN EMERGENCY AND THE ACFT LANDED WITHOUT FURTHER INCIDENT. GROUND MX CREW WAS UNABLE TO DUPLICATE THE ERROR. ALL OPS CHECKS PRODUCED SATISFACTORY RESULTS AND THE ACFT WAS RETURNED TO SERVICE.