As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2056 - EWR - FLIGHT CREW REPORTED LAV SMOKE INDICATION ON EICAS (NO SMOKE NOTICED DURING VISUAL INSPECTION). EWR MX RAN ENGINES AND PACKS - NO SMOKE NOTICED AND PERFORMED OPERATIONAL CHECK FOR THE LAV SMOKE DETECTION SYSTEM SUCCESSFULLY. ACFT WAS APPROVED TO RETURN TO SERVICE.