As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT FROM ORD RECEIVED FWD CARGO DOOR CAUTION AND PROX SYSTEM FAULT MSG. EMERGENCY DECLARED, A/C DIVERTED TO CVG LANDED SAFELY. INSPECTED A/C AND FOUND FWD CARGO DOOR HANDLE RELEASE BUTTON PARTLY OUT. RESET HANDLE, NO FURTHER DEFECTS NOTED. OPS CHECK GOOD.