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p040d code

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  1. Bahl74

    Help.....P040D code

    I really hope to find the answer to this. 2011 ram 6.7 bought the truck and it already had been deleted and has a tune(I have no idea what tune unfortunately). The issue that I'm having is the code P040D. I have tried to clear it and the only way is to disconnect the batteries but then the code...
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