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 MESSAGE ON FLIGHT ATTENDANTS PANEL, NO SMOKE DETECTED. MAINTENANCE ACCOMPLISHED TSM 24-00-00 AND RESET THE CIDS AND FAULT CLEARED. A SATISFACTORY OPERATIONAL TEST WAS ACCOMPLISHED WITH NO FAULTS NOTED.