Once you’ve confirmed these qualifications, check your software to view the live data to ensure that a faulty clutch switch or accelerator pedal is not showing the electronic control module (ECM) they’re engaged when they’re not.Ĭheck the PTO and idle switches in the dash. This blog post will give you some common checks that you can do.Ī common cause for a DPF regen failing is that the software you’re using isn’t clearing the vehicle as “safe.” The following conditions must be met for the software to clear the vehicle or else the vehicle cannot initiate regeneration: Various software packages may or may not explain why forced regeneration fails. The problem is that this often doesn’t work as well. However, sometimes even the parked regeneration doesn’t work, and you need to use a diagnostic tool to “force” the DPF regen. One variation of the active regen is the “parked regen.” This is where the driver or technician presses a button while the vehicle is stationary to perform an active regeneration.
The other is an active regen event, which means the vehicle is injecting fuel into the exhaust system to create high temperatures. One is passive, which means that the DPF is cleaning itself - much like a self-cleaning oven - while you are driving down the road through heat built indirectly in the system. By now everyone understands that there are mainly two types of regen events that are run. Diesel Particulate Filters (DPFs) have been around since 2007.
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