Cruise light flashing and cel on what is going on

What is your question?

2006 Subaru Forester cruise light is flashing and the check engine light is on solid this goes on then it will go off with no specific time or miles what is it and how to fix it also auto shop got code P0003

What makes this problem better or worse?

Nothing much it's just coming on and then going off with no reason

How long has your 2006 Subaru Forester had this problem?

Just bought the car