As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FMC REPORTED A SHORT TIME FAULT MESSAGE 75-30802 T25 SIGNALS DISAGREE ON NR 2 ENGINE. ACFT GROUNDED. PERFORMED A NR 2 ENGINE EEC BITE. NO CURRENT FAULTS AND NO FAULT HISTORY. REMOVED AND REPLACED NR 2 ENGINE'S J9 HARNESS. PERFORMED FADEC SYSTEM TEST. SYSTEM TESTED GOOD. IAW AMM 73-21-06.