you need to clear the codes,some can be from issues already fixed. it could certainly be it needs a handful of sensors replaced,they quit driving it for a reason. could be they didn't wanna stick any money in it and just lived with the check engine light coming on and off for a while.
Multiple codes on DDEC IV
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by henboy1, Aug 25, 2017.
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