I've got an 07 v star 650. This morning, around 40 degrees out, I rode it on the freeway, and the check engine light came on. I pulled off to the shoulder, and the light went out after about 30 seconds. I shut down and checked the oil level - it was fine. Started back up,and took off again. The light came on again when I hit high speed, went out when I slowed down. The bike ran great, sounded normal the whole time.

Any idea what this could be!

put 50-100 ml more oil

... and next time warm your engine 5 min before you go

this is happening when the engine is cold.

I can try to add a bit of oil, but it isn't low at all. I didn't have this problem a couple of days ago - the only thing that changed was the ambient temp.

I warmed the engine up before taking off, and didn't see the problem until I was 12 miles from home - I'm pretty sure the engine was warm by then.

Moved to workshop.

is not about low level oil, nothing wrong with you oil level. fit you engine with oil until the maximum level allowed. I had the same problem and we are not the only who had same problem. what I suggest you was the solution for all.

Ok, I'll give it a try, thanks

I assume that's 40º Farenheit?