As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND FAULT CODE 75-20801 ON #1 ENG T25 SIGNALS DISAGREE SHORT TIME FAULT DEFERRED PER T/C 78273000. GROUNDED - YES. REMOVED AND REPLACED #1 ENGINE PT25 SENSOR IAW B737-800 AMM 73-21-02-000-801-F00 AND AMM 73-21-02-400-801-F00, ETOPS GROUND VERIFICATION GOOD.