As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: ECAM WARNING FOR SMOKE IN LAVATORY DURING CLIMB FOR APPROXIMATELY 10 SECONDS. CLEARED ON ITS OWN. NO SMOKE OR ODOR DETECTED IN ANY LAVATORY UPON FLIGHT ATTENDANT INSPECTION. ACCOMPLISHED RESET BY OPENING ALL 10 CIRCUIT BREAKERS IAW 23-73-00. FAULT CLEARED.