Hello,
I have an NA J-Spec 5 speed - pre facelift. When I get upto 50 mph (80 kmph) and stay there for more than a few moments, my big red MIL triangle light comes on, along with the orange CEL on the side. Obviously, the first time, I absolutely bricked it and pulled over quick. It disappeared when I restarted the car.
This has happened many times since then, and it always goes away when I restart the car, even if it is instantly. There are NO engine codes stored as far as I know, because the CEL does not flash when the ignition is turned on. I've searched around a bit, and checked the brake fluid as a result - it seems to be fine. The alternator seems to be charging fine as well, from my volt meter/gauge.
I'm thinking it has something to do with a missing active spoiler? I don't know if my car ever had one, but I read a few articles on how this could be the case. The speedo still reads in kmph, so there isn't a converter installed yet.
Am I missing something, or is it just the spoiler thing? If so, how do I stop the MIL+CEL from coming on. As you can imagine, it's quite the mood enhancer to have your car tell you that something is wrong, every single time you get on the motorway!