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 SMOKE ECAM INDICATION IN 2 AFT LAVATORIES. MAINTENANCE ACCOMPLISHED SMOKE DETECTOR CONTROL UNIT (SDCU) #1 AND #2 WERE RESET AND FAULT CLEARED. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED PER AMM 26-17-00.