As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: FLIGHT CREW REPORTED A SMOKE LAVATORY INDICATION DISPLAYED MOMENTARILY AND EXTINGUISHED IN LESS THEN 2 SECONDS. AIRCRAFT LAVATORIES CHECKED OK. MAINTENANCE ACCOMPLISHED SMOKE - LAVATORT DETECTOR FAULT TROUBLE SHOOTING TASK WITH NO ISSUES NOTED.