As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING T/C 78273000 FOR NR 2 ENG FOUND FAULT CODE 77-20862. THE BOTTOM LT EGT SIGNAL (T495S3) IS OUT OF RANGE. ACFT GROUNDED. PERFORMED FIM 77-21-00-810-803. CLEANED EGT CONNECTOR REF AMM 77-21-00. AFTER CLEANING, READING GOOD.