Well ever since I got my car I've only had a problem with the light under one circumstance. I take this one highway thats 55mph, or any place thats 55mph it comes on.
I'll be doing 70-72 on the thruway and it never comes on.

Any reason why it does that?
I know the engine isnt bad because ive had it since october and no engine problems.

 

Get the code scanned & post it. With out knowing the code it could be anything.