As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: LAVATORY SMOKE WARNING ILLUMINATED TWICE DURING CRUISE. RESET ITSELF.NO EVIDENCE OF PASSENGER SMOKING OR SMOKE OR FIRE. MAINTENANCE PERFORMED A SATISFACTORY OPERATIONAL TEST OF ALL LAVATORY SMOKE DETECTORS WITH NO DEFECTS NOTED PER TSM 26-17-00.