As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED AFTER TAKE OFF AIRCRAFT WOULD NOT PRESSURIZE AND HAD AN ECAM MESSAGE FOR THE CABIN PRESSURE SAFETY VALVE OPEN. AIRCRAFT RETURNED TO ORD WHERE IT LANDED SAFELY WITH OUT FURTHER INCIDENT. (NO EMERGENCY WAS DECLARED) **ORIGINAL REPORT WAS AALA202201065279** REPLACED SAFETY VALVES 6HL AND 7HL (AALA202201079223) PER AMM 21-31-52. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED PER AMM 21-31-00.