As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OUTFLOW VALVE FAULT ON ECAM FOLLOWED ECAM ACTION AND UNABLE TO PRESSURIZE AIRCRAFT. DIVERTED. EMERGENCY WAS DECLARED. FOUND MAIN THE OUTFLOW VALVE AND ENSURED INTERNAL OUTFLOW VALVE IN FULL OPEN. IAW AMM TASK 21-26-00-040-002-A. OKAY FOR CONTINUED SERVICE.