What was found
ENG 2 LOW FUEL PRESSURE INFLIGHT, CREW PERFORMED QRH PROCEDURES AND DIVERTED TO BOS, EMERGENCY DECLARED AND LANDED SAFELY, FUEL LOW PRESSURE SWITCH FROM E2 SWAPPED WITH E1, OPS CHECK FAILED FURTHER TROUBLESHOOTING REQUIRED PLACED ON MEL 73-31-01-1. REMOVED AND REPLACED (E1) FUEL LOW PRESSURE SWITCH, OPS CHECK GOOD.