Why does my car Vibrants in idle when start it. Check engine light too

What is your question?

When I start the car it vibrates and my check engine light with traction control light comes on. I've had it look at but they can't seem to found the problem..can you help on this matter

What makes this problem better or worse?

Same all the time

How long has your 2011 Toyota Avalon had this problem?

3 months