moffett

Driving home last night my CEL light came on. I immediatly pulled over and turned of the car. After a few minutes I started it up again and the CEL light had dissapeared. The car drove perfectly and even today I have not had the light come on.

I know cel 32 = 02 sensor but should I worry?

Also my exhaust when warm seems to rattle, I think its hitting a heat shield somewhere, would this maybe have caused the CEL to comne on.

Any help appreciated guys as Im starting to worry now ......cheers