As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHX - AIR TURNBACK - FL190 FLIGHT CREW RECEIVED ECAM MESSAGE FOR FWD CARGO DOOR UNSAFE, AIRCRAFT TURNED BACK TO PHX AND MADE AN UNEVENTFUL LANDING. AT GATE MAINTENANCE FOUND CARGO DOOR SECURED. MAINTENANCE TROUBLESHOT AND REPLACED THE FWD CARGO DOOR SENSOR (30WV), THE CONNECTOR, AND THE BACKSHELL FOR SENSOR (30WV) IAW AMM 52-71-12-401.