As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ASH 7376 GSO - CREW REPORTED TOILET SMOKE WARNING MESSAGE AND FA REPORTED SMOKE IN THE LAV. CONTRACT MX INSPECTED THE LAV COMPONENTS AND FOUND NO SIGN OF FIRE OR OVERHEATING. CONTRACT MX WITH THE CREW PERFORMED POWER ENGINE RUNS WITH THE PACKS ON AND COULD NOT GET ANYMORE SMOKE IN THE LAV.