As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE BITE TEST SHOWS FAULT CODES 75-10592 TBV POSITION SIGNAL OUT OF RANGE, 75-20412 HPTACC POSITION SIGNAL DISAGREE, AND 75-10412 HPTACC POSITION SIGNAL DISAGREE. ACFT GROUNDED. REPLACED EEC FADEC IAW AMM 73-21-60-400-801-F00, EEC FADEC TEST PERFORMED, NO FAULTS. REF AMM 73-21-00-700-802-F00. EEC DISCRETE TEST PERFORMED, NO FAULTS. REF AMM 73-21-00-700-809F00.