As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENROUTE, BLEED OFF LT ENG EICAS MSG ILLUMINATED, REPLACED THE LEFT HIGH PRESSURE FAN AIR CONTROLLER AND THE LEFT MANIFOLD DUAL TEMP SENSOR (M36004). RAN THE ENGINE AT HIGH POWER ALL CHECKS WERE NORMAL. ETOPS CATEGORY 'B': DIVERSION OR TURNBACK.