As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ACCOMPLISHMENT OF T/C 78273000 FOUND #1 ENG SHORT TIME MAINT MSG. # 75-30801 T25 SIGNALS DISAGREE. GROUNDED - YES. REPLACED NEW T25 SENSOR & INSTALLATION TEST GOOD B737-800 AMM 73-21-02/401, OPENED & CLOSED FAN COWL AND TR AMM 73-23-07 AMM 78-31-00.