As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON PERFORMING T/C 78273000 FOUND #2 ENG FAULT MSG 75-20832 THE T3 SIGNAL IS OUT OF RANGE. LONG TIME FAULT. GROUNDED - YES. T3 CH B SHOWED 0.25C, CH A SHOWED 116C. CH B WAS BELOW AMBIENT AIR TEMP. REMOVED AND REPLACED J10 HARNESS ON #2 ENGINE, REF B737-800 AMM 73-21-06-400-802-F00. OP CHECK GOOD, REF FADEC SYSTEM TEST AMM 73-21-00-700-802-F00. EEC FAULTS ERASED.