As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNSCHEDULED LANDING DUE TO WING BODY OVERHEAT INDICATION. MAINTENANCE REPLACED AFT LOOP (SECTION 58) DETECTOR. ALSO REPLACED BOTH LOAD CONTROL VALVE CLAMPS. PERFORMED LEAK TEST FROM APU TO AFT PRESSURE BULKHEAD. NO LEAK WAS DETECTED. WING BODY OVERHEAT DETECTION TESTED GOOD (NO OVERHEAT LIGHT) AND AIRCRAFT WAS RETURNED TO REVENUE SERVICE.