Hey sorry, I havent written my messages well enough. The ECU light flashed to give me code 1 or 10, i cant tell if they were long or short flashes since I have nothing else to compare them too, but I'm fairly sure its code 1, which is:

1 Oxygen Sensor "A" (Primary) defective circuit or unplugged / defective sensor

The other light I was talkign about was the engine check light. If you re-read the last post, I've edited it to make clear what light I was talking about. The engine check light comes on after a while of driving 45mins-1hour, but if I restart the car, the engine check light is gone.

So my questions now are:

1. If it is the Oxygen Sensor, is there anyway to just see if its come unplugged or something, without having to play around electrical stuff?

2. If the problem causing the engine check light was the Oxygen sensor, why does it only come on after a while of driving, and why does the engine check light go once i restart?

Thanks.