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 DUE TO: PRESSURIZATION AUTO FAIL ILLUMINATED. ALTERNATE MODE FAILED AS WELL, AND CABIN PRESSURIZATION WAS UNCONTROLLABLE IN MAN MODE. AIRCRAFT DIVERTED AND LANDED SAFELY AT CLT WITHOUT FURTHER INCIDENT. REPLACED CABIN PRESSURE CONTROL MODULE. PER AMM 21-31-02. OPERATIONAL CHECKS GOOD.