As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT 3545/3483/3447, NR 2 ENGINE INTAKE LOW PRESSURE LIGHT ILLUMINATED AND ANTI-ICE WARNING C/B POPPED. RESET, POPPED AGAIN. DURING CLIMBOUT ENGINE NR 2 LOW PRESSURE LIGHT CAME ON AFTER SELECTING ENGINE ICE ON. COMPLETED QRH AND NO HELP. AIR RETURN TO MEM. MAINTENANCE FOUND CONNECTOR ON NR 3 ENGINE LOW PRESSURE SWITCH NOT TIGHT, RESECURED.