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 LIGHT ILLUMINATED DURING CRUISE WITH NO KNOWN ISSUES, FLIGHT ATTENDANTS FOUND NO SMOKE OR HEAT IN LAVATORIES. SELF TESTED LAVATORY SMOKE DETECTORS PER AMM 26-14-00. UNABLE TO DUPLICATE FAULT. OPERATIONAL CHECK GOOD.