As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT CREW RECEIVED AN EMERGENCY DOOR UNSAFE LIGHT. FLIGHT LANDED UNEVENTFULLY AND PASSENGERS DEPLANED NORMALLY. THE SENSOR FOR THE EMERGENCY EXIT DOOR WAS FOUND SOAKED WITH GLYCOL AND WAS CLEANED. A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED AND AIRCRAFT WAS RELEASED FOR CONTINUED SERVICE.