As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: LAVATORY L SMOKE ECAM CAME UP FOR ABOUT 2 MINUTES AND THE FLIGHT ATTENDANT SAID NO ONE HAD BEEN IN LAVATORY FOR A FEW MINUTES. MAINTENANCE ACCOMPLISHED A BITE TEST OF THE SMOKE DETECTORS WITH NO FAULTS NOTED.