As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: IN FLIGHT AT FLT LEVEL 340 WE HAD A QUICK 2 SECONDS ECAM ON THE LAVATORY SMOKE FOR LAVATORY E, IT WENT AWAY AUTOMATCALLY ON ITS OWN. MAINTENANCE CLEANED SMOKE DETECTOR AND ACCOMPLISHED GROUND TEST PER TSM 26-15-00 WITH NO FAULTS NOTED.