I drive a 4 cylinder 2001 Honda Accord LX and recently my check engine light turned on. The code was for the EVAP system, but I was wary of having it repaired immediately. I see 3 problems with a problem in the EVAP system, and they are a slightly reduced fuel efficiency, an inability to pass emission tests that no one tests for, and a check engine light that is on. However, before I could make a decision of whether or not to fix the system, the light turned off. The same thing happened last winter around this time, and the battery was never disconnected in either case.
So I have a few questions:
Could there be a problem with my CEL and the computers that operate it? If not, why did the CEL turn itself off twice now?
Are my assumptions for the problems associated with a failing EVAP system accurate? And if not, what is a more accurate synopsis of the problems?
If those assumptions are accurate, would it probably be cheaper in the long run to simply turn off the codes relating to EVAP than actually repairing it? A small leak of gasoline vapor over a 5 year period doesnt seem like it would be more expensive than a couple hundred of dollars in parts and labor.