If its not one thing its another

I just happened to scan my truck through my scangauge to check for any other codes except the # 2 glow plug which has caused my CEL to be on for the past few weeks. I found these codes. Can somebody tell me what they are??


P0373 Timing Reference High Resolution Signal A Intermittent/Erratic Pulses

C301E ????? I cant find this one

thanks again fellas

 

P0373 doesn't show on my list (see attached).
I think the "P" prefix stands for "power train" and the "C" stands for "Chassis". The list that I have attached is just for the power train DTC.

Here is a link to some chassis codes that I found online.
Ford Powerstroke Diesel DTC OBDII Diagnostic Trouble Codes- Chasis C Codes | Superdutypsd.com

 

well i cleared the codes with my scangauge and they have not come back. Not even my po672 # 2 glow plug. Is it possible that the gpcm or the plug that goes to it has a short ? I replaced my gpcm a while back and the light went off and came back on a short time later. Then it went off and has not came back on since.