Hello, as described in the title, the check engine lights up. I’ve been told how many times this is a typical SAAB disease. But what is really behind it? It just burns, so it doesn’t flash (short, long or other pattern). It’s just on! What’s it got on it? Then I wanted to know if there are different straps? I mean, some probably have chain and other straps. Which one affects this and this one where it affects it in general so that this one then also always have chain? We have a 900 II 2.3L S, 110KW EZ: 12/93 (94 model) 5Doors Dear Thanks for your help/response