As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE LAVATORY SMOKE ON UPPER ECAM MOMENTARILY, LESS THAN 2 SEC, WENT AWAY. FLIGHT ATTENDANT CHECKED LAVATORY E & FOUND NO EVIDENCE OF SMOKE. INDICATION IS STILL ON CIDS PANEL. R & R LAVATORY E SMOKE DETECTOR IAW AMM 26-17-15. NO FAULTS NOTED ON GND AT THIS TIME.