Danieltravelers

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?

@fjh yea I had the dpf sent out to clean already and it failed. The dpf filter is no good. so will have to be looking at getting another dpf for this unit. But I will b having a look at the injectors just in case. but the dpf was part of the problem

@steeler oh ok. so even if there is no codes for the injectors they still could b a problem. got it.

no my egr is working properly. I would rather fix it properly then doing a patch job on it. I know my filters will have to cleaned out for sure but does anyone think my injectors could b going bad? would I have a code for injectors if it was going bad or a cracked injector?

my turbo has been changed already and my CAC and egr valve been changed twice.

I checked the aftercooler and all the turbo hoses everything is good. no leaks found

I also have another one same kind of truck with the same situation except the engine light is on.

the codes I have for this one is

P102 - Boost pressure

P105 - Boost temp

P411 - EGR diff pressure

P412 - EGR temp aftercooler

PP270 - ( I cant find what this is)

P096 - fuel level

nope. no power loss or fuel mileage

I have a 2009 mack cxu613 with a MP7 with a DPF filter and no DEF fluid. when under load and when not under load it as excess black smoke from the tail pipe. I have already cleaned out the EGR valve and the pipes. I haven't cleaned out the DPF filter yet. its has 568983km but I have no codes. should I b looking into dropping the filter and getting it cleaned next or should b I looking some where else?

I have a engine code displayed on dash PP330 which is for discharge recirculator valve solenoid. Does anyone know where this is located on the engine?