As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF FROM KTOL LANDING GEAR DOORS LIGHT REMAINED ILLUMINATED AFTER GEAR RETRACTION. THE ABNORMAL CHECK LIST COMPLIED WITH AND DOORS LIGHT REMAINED ON. CREW RETURNED TO KTOL AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED GEAR DOOR WARNING LIGHT SYSTEM AND FOUND CORROSION. MAINTENANCE CLEANED, RESECURED AND TESTED GEAR DOOR WARNING SYSTEM ON GROUND. OPERATIONAL CHECK GOOD ON GROUND PER ALL APPLICABLE MANUALS. AIRCRAFT WAS RETURNED TO SERVICE.