As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO DFW DUE TO THE FLIGHT CREW REPORTING A VENT SKIN VALVE FAULT ON ECAM. THE AIRCRAFT LANDED SAFELY AT DFW AND TAXIED TO THE GATE UNDER ITS OWN POWER. MAINTENANCE REPLACED THE SKIN EXCHANGER ISOLATION BUTTERFLY VALVE 24HQ PER AMM 21-26-55 (AALA202507139384) AND THE SKIN TEMPERATURE SENSOR 28HQ PER AMM 21-26-13. (AALA202507143084) A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO FAULTS NOTED.