As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ACCOMPLISHMENT OF TASK CARD #78273000 FOUND FAULT 77-20862 THE BOTTOM LEFT EGT SIGNAL (T495S3) IS OUT OF RANGE. ECONOMIC FAULT. DEFERRED PER T/C 78273000 IN THE NR 2 ENGINE. GROUNDED - YES. PERFORMED FMC CDU ENGINE FAULT TASK CARD 78273000. #2 ENGINE HAS NO RECENT FAULTS AND NO FAULT HISTORY.