As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EWR CO2879, CREW REPORTED, LAV SMOKE WARNING DURING FLIGHT WITH ASSOCIATED SMOKE ALARM. PERFORMED QRH. NO VISIBLE SIGN OF SMOKE OR FIRE. FLIGHT CONTINUED UNEVENTFULLY. MAINTENANCE REMOVED AND REPLACED SMOKE DETECTION PANEL IN GALLEY IAW EMB145 AMM 26-14-02. OPS CHECKED SYSTEM GOOD. AIRCRAFT RETURNED TO SERVICE.