As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENROUTE SMOKE TOILET CAUTION MSG. (FLT 1357) CLOSED INSPECTED AIRCRAFT FOR SIGNS OF ELECTRICAL ARCING, OR ODOR. NO ISSUES FOUND. RAN AIRCRAFT ENGINES AND AC PACKS. NO SMOKE FOUND IN THE CABIN. PERFORMED OPERATIONAL TEST OF LAV SMOKE DET IAW AMM. SYSTEM OPERATES NORMAL. AIRCRAFT IS OK FOR SERVICE