As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SJU - INFLIGHT STI-JFK. AFTER TAKEOFF CLIMBING THROUGH 12000 EICAS AMBER LEFT ENGINE FUEL FILTER MESSAGE. EMERGENCY DECLARED FLIGHT DIVERTED SJU LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED FUEL FILTER DIFFERENTIAL PRESSURE SWITCH AND FUEL FILTER. SYSTEM GROUND CHECK NORMAL OPERATION.