As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE WORKING ON T/C 78273000 FOUND MSG #75-30801 T25 SIGNALS DISAGREE. SHORT TIME, ENG #1. GROUNDED - YES. DUE TO HISTORY REMOVED AND REPLACED #1 EEC IAW B737-800 AMM 73-21-60-000-801-F00 AND AMM 73-21-60-400-801-F00, SOFTWARE VERIFIED CORRECT IAW B737-800 IPC 73-21-60. ETOPS GROUND FUNCTIONAL CHECKS GOOD IAW AMM 73-21-00-700-802-F00.