As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT NOT GROUNDED: MOMENTARY FALSE LAVATORY SMOKE WARNING ON ECAM. WARNING LASTED 2-3 SECONDS AND THEN CLEARED. ALSO INDICATED ON CIDS PANEL, ALL LAVS INSPECTED WITH NO EVIDENCE OF SMOKE OR ODOR. R&R ALL A/C LAV SMOKE DETECTOR FILTERS, ACCOMPLISHED LAV SMOKE DETECTOR RESET AS PER AMM 26-17-00.