As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENROUTE, CREW RECEIVED EICAS MESSAGE "LT ENG FUEL FILTER" DURING FLIGHT. THE FLIGHT DIVERTED AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE R & R LT ENGINE FUEL FILTER DIFFERENTIAL PRESSURE SWITCH & LT ENGINE MAIN FUEL FILTER ELEMENT.