As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHORTLY AFTER DEPARTING KBUF THE PILOT REPORTED THAT THE SOLID/STEADY LEFT WING OVERHEAT LIGHT CAME ON. THE PILOT FOLLOWED THE EMERGENCY PROCEDURES CHECKLIST AND DECLARED AN IN-FLIGHT EMERGENCY. THE PILOT RETURNED TO KBUF AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED THE AIRCRAFT AND FOUND THE LEFT WHEEL WELL OVERHEAT SENSOR DEFECTIVE. REPLACED THE OVERHEAT SENSOR, GROUND RUN THE LEFT ENGINE, THE LEFT WING OVERHEAT LIGHT OPERATIONAL CHECK NORMAL.