As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RECEIVED NOSE GEAR UNSAFE INDICATION WHEN GEAR EXTENDED FOR LANDING. RECYCLED GEAR AND FOLLOWED COCKPIT OPERATING MANUAL PROCEDURE. VISUALLY CONFIRMED GEAR DOWN. FLIGHT LANDED WITHOUT INCIDENT. REPLACED PROXIMITY SWITCH ELECTRONIC BOX. FOUND NOSE GEAR DOWN POSITION SENSOR OUT OF LIMITS. ADJUSTED NOSE GEAR POSITION SENSOR, OPERATIONAL CHECK OK.