As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT FROM KDTW FOR KBNA, THE FLIGHT CREW RECEIVED A GEAR DISAGREE WARNING WITH A NOSE GEAR INDICATION. THE FLIGHT CREW COMPLETED THE QRH AND REQUESTED TO RETURN TO KDTW. AN OTHERWISE NORMAL APPROACH AND LANDING WAS MADE AT KDTW. MAINTENANCE REPLACED THE NOSE LANDING GEAR UPLOCK ASSEMBLY AND SWUNG THE GEAR. ALL CHECKS WERE NORMAL AND THE AIRCRAFT WAS RELEASED FOR SERVICE.