Thank you very much, dougjohn2. I'll think of it. Actually, it was a bad experience.
I got a car accident the other day, the front bumper got a breach gap ( 2 inches). My turning signal light was broken. It'll cost me $1000. The next day, the check engine light turned on. I thought it might be caused by the accident. But it seems not. They just happened to occur at the same time.