As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE SMOKE TOILET WARNING MESSAGE ILLUMINATED IN FLIGHT AND WENT OUT AFTER ONE MINUTE. PSA MAINTENANCE PERFORMED AN INSPECTION OF THE LAVATORY AND THE AUTOMATIC FIRE EXTINGUISHER. NO EVIDENCE OF SMOKE, FIRE, OR DEFECTS WERE FOUND. THE LAVATORY SMOKE DETECTOR SYSTEM OPERATIONALLY TESTED GOOD IAW CRJ 200 AMM 26-26-01-210-801 & 26-16-01-710-801. THE AIRCRAFT WAS THEN RELEASED FOR SERVICE.