As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SJU - FLT 134, EN ROUTE STT TO PHL, CREW RECEIVED THE EICAS MESSAGE 'L ENG FUEL FILT.' FLIGHT DIVERTED TO SJU AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED THE FILTER AND FOUND IT SATISFACTORY. THE FUEL DIFFERENTIAL PRESSURE SWITCH WAS REPLACED, AS WELL AS THE FILTER. (M)