As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED RECEIVING AN EMERGENCY DOOR WARNING INDICATION. THE CREW ENSURED THE EMERGENCY DOOR WAS IN FACT CLOSED. MAINTENANCE CONTROL DEFERRED THE EMERGENCY DOOR INDICATION SYSTEM WITH 52-70-03 CODE-C. THE AIRCRAFT WAS THEN RELEASED FOR SERVICE.