As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RED NOSE LANDING GEAR LIGHT ILLUMINATED AND STAYED ON AFTER GEAR RETRACTION. LANDING GEAR CYCLED TO OFF/DOWN/UP. LIGHT EXTINGUISHED AFTER SECOND RETRACTION. NOISE AND VIBRATION ACCOMPANIED RED LIGHT. INSPECTED NOSE GEAR, CLEANED NOSE GEAR POSITION SWITCHES.