As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIAGNOSTICS REPORTS NR 2 ENGINE TREND DATA SHOWS A SHIFT IN EGT INDICATION ERRORS ARE SUSPECT. GROUNDED - YES. DUE TO HISTORY, REMOVED AND REPLACED THE T49.5 S2 PROBE REF AMM 77-21-01/401. PERFORMED EEC TEST REF AMM TASK 73-21-00-700-804-F00 - OPS CK GOOD.