As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, CABIN AND PRESSURE CONTROL INOPERATIVE, 1 AND 2. THE OXYGEN MASKS DEPLOYED BUT WERE NOT NEEDED. FLIGHT DESCENDED TO FL 100 AS A PRECAUTION. EMERGENCY DECLARED AND DIVERETED. THE AIRCRAFT WAS GROUNDED. REPLACED THE NR 1 AUTO CABIN PRESSURE CONTROLLER IAW MM 21-31-02.