As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GE DIAGNOSTICS REPORTS NR 2 ENGINE EGT HDM CONTINUES TO SHOW GREATER THAN EXPECTED DATA SCATTER AND MARGIN LOSS. INDICATION ERRORS STILL SUSPECT. PERFORMED TASK 77 21 01 200 801 F00. T49.5 PROBE AND EGT SYSTEM INSP STEP 1. FOUND CJ10 CONNECTOR DP1011 TO S3 IS AT HIGH RES (23 OHMS). REPLACED DP1011 WIRE HARNESS FOR NR 2 ENG (FOR EGT SENSORS NR 3 & NR 4). ACCOMP EEC TEST, TEST PASS NO FAULTS. REF. M/M 27 81 00 040 801 77 21 01 400 801 & 73 21 00700 804.