As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: LEFT ENGINE OVERHEAT AT CRUISE FL 390. SHUTDOWN ENGINE PER CHECKLIST AND DIVERTED TO LAX. EMERGENCY WAS DECLARED. REPLACED AFT CORE FIRE LOOP (AALA202208010818) PER AMM 26-11-01. MAINTENANCE MESSAGE 26-10011 FIRE DETECT CARD HAS INTERNAL FAULT. REPLACED LEFT ENGINE FIRE DETECT CARD (AALA202208025237) PER MM 26-11-03.