Hey guys, I hope you can give me some direction on a recent issue I am having with my 02' PSD. After getting a CEL recently while accelerating on a grade, I pulled codes using a Hypertech programmer and found p0472, and p1201. The 0472 I am aware of because the back pressure sensor is unplugged. The 1201 has me stumped. I did a search and found nothing on this and the code is not listed on all lists of codes but I found it to be #1 injector circuit open/shorted. I cleared codes and got it again several days later. Truck starts and runs great as always, can't really tell any difference even when CEL light is on. It usually goes out within a few minutes.
Where do I start? UVC harness?

Thanks in advance

 

Are you sure it's not P1210? If so, it's set because your tuner is upping the ICP to levels higher than what the PCM wants to see. Don't worry about it...

 

Are you sure about the #? Can't find anything about a 1201. Maybe a hypertech code????

Admin Note: We have a list of Power Stroke codes in our tech articles.

 

Sounds right. I can't find anything on a 1201.
Welcome to FTE and hope to see ya around 257man.

 

I'm not familiar with a P1201 either. As stated above a P1210 is an ICP, open signal return fault. I found a P0201 which is an injector code on the gas engines??

 

Ditto to the above... never heard of a P1201 nor is it on my list.

 

Same here on the 1210, that is what I thought too but it is definitely P1201. I looked it up on google and found a list of codes containing more numbers than present on some of the lists here. P1201-1208 are injector circuits open/shorted for cylinders 1-8 respectively. Truck runs fine so I don't know if this is an instantaneous thing setting a code or what. It runs too smooth to be only on 7 cylinders I would think, but who knows. Any ideas?

 

I found a list of DTC codes that included the P1201 here.


Kwik, I also found this code to be for the same problem on the VW diesel. (inj. circuit cylinder #1 open/short). Ever come across this?

I appreciate the response.