As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE TOILET MESSAGE APPEARED. (FLT 4458 )INSPECTED LAVATORY FOR SIGNS OF SMOKE AND FOUND NO SMOKE AND DID NOT SMELL ANY SMOKE OR ODORS. PERFORMED TEST OF LAVATORY SMOKE DETECTOR AND FOUND NO FAULTS AT THIS TIME. LAVATORY SMOKE DETECTOR OPS CHECKS GOOD.