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International Automotive Technicians Network
Re: turning off the lamp 'organically'
Posted to Emissions Forum on 9/7/2018 9 Replies

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If you fix a problem that sets codes, the CEL will go off after 4 drive cycles without seeing the issue again, but it will still be a history code until 40 drive cycles.

Here in CT, a history code ... Login to read more.

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