As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT DIVERTED DUE TO A FWD LAV SMOKE EICAS MESSAGE. THE CABIN CREW CHECKED THE LAV AND CABIN AND NO INDICATION OF SMOKE/FIRE WAS FOUND. THE MESSAGE WENT OUT WHILE STILL IN FLIGHT. THE FLIGHT LANDED. MAINTENANCE PERFORMED FWD LAV SMOKE DETECTOR OPS TEST IAW AMM. OPS TEST GOOD. OK FOR SERVICE.