As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1211 BOS-BUF, AIR TURNBACK, CREW DECLARED EMERGENCY DUE TO ON CLIMBOUT THROUGH FL 270 ENG 2 FUEL LO PRESS AND ENGINE 2 FUEL FEED FAULT COME ON. CREW FOLLOWED QRH PROCEDURES. TROUBLESHOOTING PER FIM 73-31-00-810-804A FOUND NR 2 ENGINE LOW PRESSURE SWITCH FAULTED. REMOVED AND REPLACED FUEL LOW PRESSURE SWITCH PER AMM 73-31-01. LEAK AND OPS CHECK NORMAL DURING HIGH POWER RUN UP.