I am tracking an electronic start-up circuit lock-out. What happens is in extreme cold weather like single digits or a let set like for 2 or 3 days it won't start. What I can do then is open the closed circuit for start-up & it will fire right up and run. I can then put it back in closed loop and it will start up fine then through the electronics like nothing happened. It shows no codes for it's unusual happenings. The electronics in the start-up circuit test good. It makes for a very unreliable ride with this occurrance.