Late Sunday afternoon I was returning home from the Mayfit rally in Pawhuska Oklahoma. We stopped for gas about 40 miles from home and my 05Dyna wouldn't start. It was cranking fine but not starting. I pulled the rear plug to make sure there was spark and it started running on just the front cylinder. Once I put the plug back in it started fine. It ran fine the rest of the way home . After I got all unpacked I decided to make sure it started again. It did start but I noticed the engine light came on a few seconds after it started and stayed on for a few seconds and then went off. I tried to find a diagnostics section in the service manual that evening but gave up unable to find anything in it. I chalked that up to me being exhausted. Monday morning I found HDTALKING by googling my problem. As a newbie to forums I was going to post a question asking for help. By this time I had also found out there is a seperate diagnostics service manual. Surprise surprise! I decided to check the Self Help Tips section first and I sure am glad I did. The tip "04-07 HD DTC Codes" was right on the money. It was easy to use and I was able to clear the error and now the engine light does not come on after it starts. However......Does anyone know why I would get a code P0374 (CKP Sensor Not Detected Carb) when my bike has EFI? Also, any clues on why it would not start and then all of a sudden was able to?