Awasome How Long For Check Engine Light To Clear References. Web depending on the problem, the check engine light could return immediately or take up to two weeks to turn on. Web check to ensure that the gas cap is tightened securely and then wait a few days to see if the light goes off on its own.
This type of light is. Disconnecting and reconnecting your battery will restart your vehicle’s computer and clear the light. Put it aside for a minute.
