As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L ENG FIRE LP1 (EICAS S) APPEARED AFTER TAKEOFF. MTC PERF T/S PER FIM 26-11 FT 804, FOUND UPPER AFT LP 1 OUT OF LIMITS READING 10K OHMS. REMOVED AND REPLACED LH ENG UPPER AFT FIRE LOOP PER AMM 26-11-02. OPS CK GOOD FAULT CLEARED. A/C REMAINS NO ETOPS. A/C RETURNED TO SERVICE