As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 5818 - DURING GEAR RETRACTION CLIMBING OUT OF MEM RECEIVED A GEAR DISAGREE WARNING MESSAGE, CREW DECLARED AN EMERGENCY AND RETURNED TO MEM. FLIGHT LANDED WITHOUT INCIDENT. REMOVED ICE AND SNOW FROM WHEEL WELLS, PERFORMED SYSTEM TEST OF THE LANDING GEAR PRIORITY VALVES AND FUNCTIONAL TEST OF EXTENSION/RETRACTION SYSTEM. NO DISCREPANCIES NOTED.