As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED RED NOSE DOOR OPEN MESSAGE AND PROXIMITY SYSTEM FAULT 1 WHITE STATUS MESSAGE IN FLIGHT. CREW FOLLOWED QRH, RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED, RE-ADJUSTED NOSE LANDING GEAR DOOR SENSOR AND PERFORMED CHECKS USING AIRCRAFT MAINTENANCE MANUAL. AIRCRAFT RELEASED FOR SERVICE.