2001 escort

i have a 2001 escort can't find problem code P1506 MANF VEC. SPD. IDLE SPEED CONTROL AUXILIARY INPUTS

i replaced the air idle contro and the throttle control sensor i reset this code and about 2 day it come up again in ideas thank u for the help

What kind of problems (if any) are you having? With lights and AC on does the vehicle idle good?

no car drives good no problem with car is just that the check engine soon came on and keeps coming on every other day (i reset it and comes by on every other day) thank u