How I kink my CEL.
You can't just un-plug it since emissions testers check its function. (and it bugs me)
So I just put a small piece of clear tape on the + side and run a jumper wire to the oil warning light.
When the key is on it illuminates once the car starts it goes out with the oil warning.light.
In some places this is enough to get you through an emissions test.
Just thought I share