As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: CABIN SMOKE WARNING DISPLAYED ON ECAM, 15 SECONDS OR LESS. WARNING LIGHT EXTINGUISHED. FLIGHT ATTENDANT REPORTED CABIN WARNING AS WELL, LEFT AFT LAVATORY BUT ALSO EXTINGUISHED. NO ACTUAL EVIDENCE OF CABIN SMOKE (LAVATORY). MAINTENANCE ACCOMPLISHED TSM 26-17-00 WITH NO FAULTS NOTED.