I did a search trying to find info on the P0301 code and almost everything had to do with the re-flash from last fall. Before I call the dealer I wanted to see if anyone had any input.

I have 04.5 LLY stock except for Predator. Predator on 40 hp tune. Last week I looked at dtc codes and found P0301 cylinder #1 misfire. I cleared code and drove it for a week. Today I checked again and P0301 is back. My truck has the latest flash so I'm not sure what is wrong. I checked my balance rates and everything looked fine.

Should I just make an appointment or do any of the experts here have any input.

Thanks in advance.

Could be a bad electrical connection with the injector. Check the wiring harness for excessive wear.