As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING TAXI TO DEPART, THE MAIN CABIN DOOR WARNING LIGHT ILLUMINATED. THE DOOR WAS CHECKED VISUALLY AND CONFIRMED CLOSED BUT THE DOOR ANNUNCIATOR WOULD NOT EXTINGUISH. DUE UN-MEL-ABLE, THE AIRCRAFT WAS FERRIED TO MAINTENANCE FACILITY AND THE SWITCH WAS REPLACED FOR PRECAUTIONARY REASONS.