As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 5577 - EN ROUTE ATL-MSP RECEIVED A CABIN DOOR PRESSURE WARNING WITH RAPID CHANGES IN CABIN PRESSURE, CREW PERFORMED AN EMERGENCY DESCENT AND FLIGHT LANDED AT MSP WITHOUT INCIDENT. REMOVED, CLEANED AND RE-INSTALLED CONNECTORS FOR BOTH CABIN PRESSURE CONTROLLERS.