As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED A LANDING GEAR LEVER DISAGREE ON CLIMB OUT WITH THE NOSE GEAR DOWN. THE ACFT RETURNED TO ICT WHERE IT LANDED WITHOUT INCIDENT. MX REMOVED AND REPLACED THE NLG UPLOCK BOX PROXIMITY SWITCHES, OPS TESTED WITH NO DEFECTS, AND THE ACFT WAS APPROVED FOR RETURN TO SERVICE.