As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OMA - FLIGHT 4431, AFTER TAKEOFF HAD A ELEVATOR SPLIT CAUTION MESSAGE. RETURNED TO OMA AND ACCOMPLISHED A UNEVENTFUL LANDING. AIRCRAFT FERRIED TO DENVER FOR REPAIRS. IN DENVER, MAINTENANCE REPLACED THE DATA CONCENTRATOR UNIT (DCU). OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.