As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TEMP PROBE MASTER CAUTION OCCURRED AT CRUISE ALTITUDE. GROUNDED - YES. PERFORMED B737-800 FIM 30-31 TASK 810 A THROUGH E NO HELP. FAULT LIGHT REMAINS ON, DEFECTS REMAINS OPEN. REMOVED AND REPLACED TOTAL AIR TEMPERATURE PROBE PER B737-800 AMM 34-21-06 PB 401. OPS CHECK GOOD.