I just bought my 14 XTX SE as a non current leftover. I know my dealer personally, and we talked for 4-5 hours about this new model and the most popular issues that have came up. He to states that this P1338 code is low-voltage related, and told me that the whole electrical system, is extremely sensitive to loss of voltage. He also demonstrated to me how, in his words, " the viper just doesn't like to be started/stopped repeatedly in short bursts. The viper beside me, he fired up then shut off immediately. He waited a few moments and fired it up again ( took a few seconds longer this time) and let it run for a while. He then started and stopped it quickly back to back twice, and I could clearly see it struggling to start more and more with each attempt. At first i thought this may have been related to insufficient programming between the ECU, fuel pimp, and injectors.... OR..... simply just poorly set up batteries from the factory. Maybe lack of charging on the dealers end. With the electronics on our vipers being primarily cat, but realistically a blend of both yamaha and cat ( our gauges are yamaha, thats electronics in my books) I'm to wonder if perhaps its just as simple as the electrical system having a fault somewhere between the battery and the ECU, therefore throwing all these codes. Simple fix, but identifying seems to be the issue. On the other hand, this roll over issue needs to get set straight. The only time I ever do anything but boondock/sidehill is when I'm on a trail etc that takes me to such area. I bought the viper for famous yamaha quality/durability that we've all come to know, and the ability this chassis has to perform in these types of riding. What in heck is the point of a 144" "crossover" snowmobile if it can't be ridden on its side? I can understand when they're rolled complete over on there backs and left running, or left on there side running with no movement. But dimple carving and sidehilling should not have any negative effect on this machine for its entire lifespan. If not, we've all got a serious problem