I was tooling around and the only thing I forgot to do was plug the MAF Sensor back in. SES light comes on after a few miles. I plug it back in and the light won't go off. Why? I've driven all over town and started the truck up several times... Suggestions? Thanks.

 

Some codes don't reset themselves. Have to hook up a scanner and reset it.

 

Can take up to 40+ cold starts with no fault detected to clear on its own. Just goto autozone etc.. Have them clear it and go from there.

 

It's gone now. Thanks. It took a few more starts and some more driving around town.

 

it'll still show in your code history when using a scanner, disconnect the battery and let it sit for a few minutes or reset it with a scanner to prevent future confusion