As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, ECAM WARNING FOR EXCESS CABIN, UNABLE TO CONTROL CABIN WITH EITHER REGULATOR IN MANUAL, COMPLIED W/ECAM AND QRH. RETURNED TO LFPG T/S AND CHANGED CPC NR 2 CPC AND AFT OUTFLOW VALVE. REMOVED AND REPLACED CABIN PRESS CONTROLLER NR 2 AND REMOVED AND REPLACED NR 2 AFT OUTFLOW VALVE. OPS CHECKS OK USING ALL SYSTEMS AND CARRIED OUT CABIN PRESSURIZATION AND ALL CHECKED SATISFACTORY.