p1670 code please help

[Fast_Frank]

hey all
this is on my dads 2000 psd and it is stock, the motor would start fine cold like the first start of the day and then would die but restart it would keep doing this till the motor warmed up .....i pulled the codes and they are as follows...p1670-ef feedback signal not detected.. and the cps error code

will be greatfull for any help
thanks frank

[mschn99]

that EF feedback code is basically for a wire that runs between the PCM and IDM. If you have a cam sensor code though, i would most definately try replacing the cam sensor before doing anything else

[Fast_Frank]

thanks we will give it a try
Frank