1. DPF’s plug so often because of generic Dealer ECM programming
  2. Simple ECM programming will improve the overall efficiency of your fleet
  3. You can LEGALLY do this yourself in about 15 minutes

Are you tired of constant premature Cummins DPF failure in your trucks? We get it. DPF issues often lead to your other common aftertreatment failures, such as EGR failure, turbo repairs, and plugged DOC’s. Bottom line is, if you can’t keep your DPF clean, you are going to have ongoing aftertreatment issues and repairs.

How the DPF is Supposed to Work

The diesel particulate filter captures pollutants before they exit the exhaust stack. These pollutants build up on the ceramic of the DPF over time. The Cummins DPF is designed to automatically (“passively”) clean itself, during what is called a “regen”. Essentially, a regen is the process of super-heating the DPF so that the built-up particulate matter can cleanly burn off.

This process requires sustained heat, which under ideal conditions occurs naturally. For example, a sustained haul, under load, at a maintained rate of speed.

What Actually Ends Up Happening

Unfortunately, ideal conditions rarely exist in the real world. Long haul trucks have to deal with traffic that can interrupt a passive regen. Vocational trucks rarely operate at necessary speed/load to generate a successful passive regen. Stop-and-go traffic, traffic lights, or even just slowing down from freeway speeds can all trigger a passive regen to stop.

Additionally, your trucks may face conditions in which the DPF is getting dirty, but is prevented from starting a passive regen. Long haulers typically deal with this while loading/unloading, or while idling the engine all night to keep the cab warm during mandatory breaks. Vocational trucks may deal with this all day long, operating in PTO mode for hours, clogging up the DPF while being unable to regen.

This is why DPF’s tend to fail so frequently. Real life application typically does not allow the DPF to clean itself.

What Fleets Are Doing About Cummins DPF Failure

Most fleets try to stay ahead of the DPF problem by doing “forced” regens. In other words, they schedule a stationary regen to be done on a regular cycle…maybe at the end of shift, for example. Does this work? Maybe a little. However, it is time consuming, and fuel consuming. In other words, it is wasteful and inefficient.

Other fleets just ride it out as long as they can until the truck de-rates and has to get towed to the shop, where they are at the mercy of the local dealership or service center to get the truck back on the road. Did you know that your Cummins DPF is supposed to last 200,000 miles??? READ RIGHT HERE

Some fleets have designated trucks on standby that go into service while other trucks are getting their DPF’s cleaned.

Some fleets have invested in expensive “heaters” that they plug-in to the truck while it is off the road. Essentially, these heaters act like a blow-dryer that is supposed to generate enough heat to clean the DPF. Do these actually work? Ummmm…not really well, as far as we are concerned.

What Fleets SHOULD be Doing About DPF Failure

Ready for the big bad Cummins secret to keeping your DPF clean?? It all comes down to your ECM. What fleets SHOULD be doing is making sure their ECM has the correct features and parameters enabled to allow the aftertreatment and DPF to operate properly. If you are having ongoing DPF issues, then guess what? Your ECM is not programmed properly. It likely has the generic, factory settings on it. Sort of a “one size fits none” thing.

This simple solution is usually overlooked or plain out not done, even by your trusty old friends at your favorite dealership. But it is quick, easy, and 100% NECESSARY in order to prevent ongoing premature DPF failure and aftertreatment failure.

If you follow Cummins recommendations, and you are a certified Cummins technician, then as the owner of the truck you can legally adjust “owner accessible features and parameters” to accommodate the exact duty cycle of your truck. This enables the necessary aftertreatment features that will finally allow that DPF to regen properly, when it needs to, to stay CLEAN!

Keep Trusting the Wrong People…Or Just Learn to Do It Yourself

Can your dealership do this for you? Maybe…but, if they knew how to, why wouldn’t they have already done it for you during one of the hundred repair visits you’ve had with them this last year???

Instead, why don’t you just CALL DIESEL FLEET SOLUTIONS TODAY and get trained on how to properly program your fleet’s ECM’s yourself? We like to “teach a man to fish”, so to speak…and quite frankly, we also like to see fleets take back control of their trucks and profitability from dealerships and service centers.


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