As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPTAIN REPORTED NOSE LANDING GEAR RED LIGHT TURNED ON DURING APPROACH AND WHEN LANDING GEAR WAS DOWN, AUDIBLE WARNING ACTIVATED AND LIGHT CONTINUED TURNED ON. LANDING GEAR WAS OPERATED MANUALLY. AIRCRAFT WAS SENT TO THE HANGAR AND SENSORS D1-31Y AND D1-32 WERE CHECKED BY CONDUCTIVITY AND THEY WERE REPLACED IAW MM 32-60-05, TEST CORRECT.