As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#2 ENGINE TREND DATA SHOWS EGT INDICATION TO HAVE GREATER THAN EXPECTED SCATTER. INDICATION ERRORS ARE SUSPECT. GROUNDED - YES. ACCOMPLISHED ALTERNATED DEACTIVATION PER CHAPTER 5 TABLE 3, ITEMS 8 & 9. REMOVED AND REPLACED CJ10 WIRING HARNESS PER B737-800 AMM TASK 73-21-06, AND S3 EGT PROBE PER AMM TASK 77-21-01. OP CHECK GOOD.