can anyone tell me what the colors of the wires do on the 02 censor

there is 4 wires

white i know one of the white wires are for the 02 signal
white
black
grey


reason for me asking this is i am pulling a code 41 and cont seam to figure out whats wrong...

thanks
scarponze

 

code 41 is primary o2 sensor. It's bad. Get a new one and try it out.