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Discussion Starter · #1 ·
Got the MIL sunday, hooked up the Mx+ and forescan shows the P0401 - EGR A Flow Insufficent Detected.

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Research indicates that this is most likely the egr cooler core being plugged up? is this a DIY that can be removed and cleaned or does it need to be replaced? Not sure what the freeze frame data is telling me there?

truck is stock and has 141k
 
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