As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FMC/CDU TASKCARD # 78273000, FOUND LONG TERM FAULT CODE 79-11101. #1 ENGINE OIL TEMPERATURE SIGNAL IS OUT OF RANGE. APPLY PLT DEFERRAL PER T/C 78273000. GROUNDED - YES. PER B737-800 FIM 79-21 TASK 802 ELECTRICAL CONNECTOR DP0602 GVI GOOD. REMOVED AND REPLACED #1 ENG OIL TEMP SENSOR IAW B737-800 AMM 79-34-02. INSTALLATION TEST GOOD, NO LEAKS, EEC BITE TEST NO FAULTS.