I am aware that a loose gas cap can cause the check engine light to turn on.
From what I have read, once this is corrected it will go off in a while, maybe
a week. Is this based on time or miles driven? We probably do not put more than 20-30 miles a week on the car, so does this mean we should wait a month for it to shut off?
Its based on how many drive cycles are completed with the evap monitor running as it should. So in your case, it may take a while, particularly if you are in a cold climate. If you go to the fuse box under the hood and pull the EFI fuse for a minute or so it will clear any codes stored in the system.
Thanks, I will give it a go.
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