As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAVATORY SMOKE EICAS ILLUMINATED FOR SEVERAL SECONDS AND THEN WENT OUT SHORTLY BEFORE LANDING. NO MESSAGE FOUND ON MAT RELATED. PERFORMED FIM TASK 26-2400-810-808 , INSPECTED LAVATORIES AREAS , NO FOUND EVIDENCE OF SMOKE. PERFORMED ALL TESTS, NO FAULT FOR THE SMOKE DETECTOR FOUND. NO MESSAGE ON EICAS.