Hello together, in advance it’s about the following vehicle: Volvo 855 144 PS 10V automatic MJ 1996 (OBD) 290,000km Prins LPG system Now to the problem: The vehicle starts badly, preferably when it was turned off 1-2 hours. That means you have to org a little more and sometimes you experience really Radau from the engine room, as if the engine were hitting back. So I would at least formulate that. Usually this works for the next attempt. If the engine control light was not on, it is at the latest. When it is on, it runs wonderfully. Since I am a quiet reader here for a long time and could solve so already some things (e.g.: ABS control unit sold out, thank you for it!), I had the error read out (a friend has a reading device, but does not live in the vicinity): A camshaft position encoder switching circuit (Bank 1) Everything then read clear, here in the forum you can read maybe also that he likes to make problems, so it was ordered by Skandix and then everything was ok for a week. Then again the again the broken message was well with me.