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Cat Man
Cat Man, Caterpillar Engine Expert
Category: Heavy Equipment
Satisfied Customers: 8822
Experience:  23 Years Caterpillar Engine experience.
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dpf ignition loss? diagnostic fault

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dpf ignition loss? diagnostic fault

Hi. Thanks for using JA! I will try and help you out.


When you say ignition loss and diagnostic fault, do you have a


"Loss of Combustion" code or a "Fail to Ignite"?


Customer: replied 6 years ago.
engine light on (yellow light) diagnostic fault found ; dpf ignition loss. truck still working on road

Thanks for the information.


First, make sure that the Regeneration Inhibit switch is in the off position. (If you haven't already)


Have you tried to pull over and perform a manual regeneration using the manual regen switch?


Customer: replied 6 years ago.
ok, will try to do the manuel regeration, thanks for the info...if problem cotinues, i'll need more info...later mastermind! lol



Please keep me posted.


I was just like to see if we can get a regen done. Sometimes when you are having regen problems, it is best to pull over and perform a regen. If you keep driving the truck, it can cause the DPF to continue to get soot loaded.


Please let me know if you need anything else.

Cat Man and other Heavy Equipment Specialists are ready to help you
Customer: replied 6 years ago.
ok, my driver says "sometimes engine lacks power, as if the engine revs up 'n down, could this dpf system cause the problem? or could a fuel problem? cause it as being getting colder here for the past 2 days, -25 degree celsius outside...

The lack of power can be caused by both the DPF system or the fuel system. I would lean more towards the fuel system. Things like fuel filters and the transfer pump can cause this.

The DPF could only cause low power if it gets clogged and restricts air flow.

Customer: replied 6 years ago.
is it good to put fuel conditioner or fuel stabilizer (kleenflo) ?
Yes. It will help when the temperature is that cold.
Customer: replied 6 years ago.
as soon as my driver did the regenaration manually, the engine light came off within 2 minutes.he did not let the regeneration finish its job, he said he will do another regeneration after work which is at 6 pm.
Sounds good, let me know if you need anything else.
Customer: replied 6 years ago.
ok, thanx for your help....good night mastermind!
Good night.