As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN DOOR: IN FLIGHT, PASSENGER DOOR AMBER MESSAGE ILLUMINATED ON AND OFF FOR ENTIRE FLIGHT. WE RAN THE QRH. NO PRESSURE SPIKES NOTED. FOUND INTERMITTENT CONNECTION BETWEEN PINS J AND K ON CONNECTOR P452. FOUND LOOSE SPLICE WIRE DAH0732W-22. REPAIRED SPLICE IN REFERENCE TO SPM 20-12-10. OPS CHECK GOOD AT THIS TIME. MESSAGES CLEARED AND DID NOT RETURN.