Pcm Code E051, Mem-Cal Error
Ensure MEM-CAL is fully inserted in socket. If MEM-CAL is fully inserted, replace MEM-CAL, clear memory and recheck. If PCM Code E051 reappears, replace PCM.
See cautions under ELECTRONIC CONTROL MODULE (ECM) in N - REMOVE/INSTALL/OHAUL article in this Section & when replacing MEM-CAL or PCM.