As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT NOT GROUNDED: RED ECAM WARNING- SMOKE / LAV FOR AFT LEFT LAV. WARNING EXTINGUISHED AFTER ABOUT 15 SEC. ; (A PASSENGER WAS IN LAV). F/A'S INSPECTED LAV AND FOUND NO EVIDENCE OF SMOKE OR FIRE. INSPECTED AFT LEFT LAV. NO DEFECTS FOUND. AFT LEFT LAV SMOKE DETECTION SYSTEM OPS CHECKED OK IAW AMM 26-17-00.