As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
YELLOW GEAR DOOR OPEN LIGHT CAME ON IN FLIGHT. FOLLOWED COCKPIT OPERATING MANUAL PROCEDURE BUT LIGHT REMAINED ON. FLIGHT RETURNED TO PHX AND LANDED WITHOUT INCIDENT. LIGHT WENT OUT DURING RETURN TO PHX. MAINTENANCE FOUND REPAIR ON RIGHT MAIN LANDING GEAR DOOR JAMB INTERFERING WITH DOOR PROXIMITY SENSOR. REPAIRED GEAR DOOR INTERFERENCE AND RAN GEAR, OPERATIONAL CHECK OK.