As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE INTAKE LOW PRESSURE LIGHT ILLUMINATED E NROUTE TO STL. DUE TO ICE CONDITIONS TURNED BACK TO MEM AND SWAPPED INTO A/C 518. MAINTENANCE REPLACED INTAKE LOW PRESSURE SWITCH IAW AMM 30-21-14. (P/N HTE690041) (S/N ON FRTR096) IAW, (S/N OFF FRTR049AX), OPS CHECK GOOD. ALSO REPLACED NR 2 ENGINE NORMAL PRESSURE SWITCH (P/N 2-303-627-01) (S/N ON 990814502263), (S/N OFF 1845). ALL ENGINE ANTI-ICE SYSTEMS CHECK GOOD.