Danieltravelers Posted July 29, 2016 Share Posted July 29, 2016 I have a 2009 mack cxu 613 that has a dash code of PP387 AND PP326. I also have the dpf switch light flashing on the dash. I can do a regen by holding the button but it does not complete the regen and the engine light stays on I know dash code 326 is for soot level but I am not sure what PP387 code is for. I have also just cleaned out the dpf filter n I replaced all clamps n gaskets on the dpf. Anything else I can look for and/or do to make a regen? Is it possible the truck went into limp mode and I need a software to clear the codes and do a forced regen from the laptop? Quote Link to comment Share on other sites More sharing options...
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