As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAS - FL 621 - CREW RECEIVED THE NR 2 ENGINE OVERHEAT DETECT LIGHT IMMEDIATELY AFTER TAKEOFF. LIGHT EXTINGUISHED WHEN POWER REDUCED ON THAT ENGINE. FLIGHT RETURNED TO LAS AND LANDED WITH NO FURTHER INCIDENT. MAINTENANCE CHECKED ALL LOOPS AND WIRING AND REPLACED THE RN 2 ENGINE 'B' LOOP AS A PRECAUTION. (M)