As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - CREW REPORTED TAIL COMPARTMENT HIGH TEMPERATURE LIGHT ILLUMINATED DURING CLIMBOUT. EMERGENCY DECLARED FLIGHT RETURNED DFW LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. FOUND CORROSION ON INSIDE OF LEFT TAIL COMPARTMENT HIGH SENSOR. REPLACED COMPARTMENT TEMP HIGH SENSOR CONNECTOR. SYSTEM GROUND CHECK NORMAL OPERATION.