As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#1 ENGINE CONTINUES TO HAVE BOTTOM RIGHT EGT SIGNAL FAULTS AND TREND DATA THAT REFLECT EGT INDICATION SYSTEM ERRORS GROUNDED - YES. REMOVED AND REPLACED ENGINE #1 CJ9 HARNESS PER B737-800 AMM 73-21-06. PERFORMED FADEC SYSTEM TEST PER AMM 73-21-00-700-802-F00 OPC GOOD.