As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: MOMENTARY LAVATORY SMOKE ECAM. CLEARED WITHOUT PILOT INTERVENTION. NO EVIDENCE OF SMOKE. MAINTENANCE REPORTED THAT MESSAGE WAS MOMENTARY AND CLEARED AS PER FLIGHT CREW. NO FAULT LOGGED IN CIDS SMOKE DETECTION AND SMOKE TEST PASSED PER AMM 26-17-00