How to Run a Stationary DPF Regeneration on a Duramax L5P

If you own a Gen 4 Duramax L5P and do a lot of idling or short-distance driving, soot buildup in your DPF (Diesel Particulate Filter) can become a serious issue. Using the EZ LYNK Auto Agent 3, you can perform a stationary DeSoot regeneration to safely clean your filter and restore performance.

What Is a DPF Regeneration?

A DPF regeneration burns off the trapped soot inside the diesel particulate filter to prevent clogging and restore optimal exhaust flow.

Passive regeneration happens automatically during long drives.
Active or stationary regeneration is manually initiated when soot levels get too high—often after extended idling or stop-and-go driving.

When to Perform a Stationary DeSoot

You can monitor your soot load percentage using the EZ LYNK Auto Agent dashboard.

Normal soot levels are around 30–50%.
If you see readings in the 80–90% range, and your vehicle isn’t driven long enough for a passive regen, it’s time to perform a stationary DeSoot.

Before You Start

Follow these safety and setup steps before running a regeneration:

Check oil and coolant levels – both must be correct.
Ensure enough fuel – low fuel can interrupt the process.
Confirm no DPF fault codes are active – don’t attempt regeneration if faults are present.
Park outdoors – away from buildings or flammable materials.
Engage the parking brake and keep the vehicle in Park (or Neutral for manuals).
Do not use the throttle, clutch, or brake during the process.
Open the hood to increase cooling in the engine bay.

How to Run the Stationary DeSoot with EZ LYNK Auto Agent 3

Connect to your vehicle with the Auto Agent 3.
Navigate to Functions → Stationary DeSoot / DPF Regeneration.
Start the vehicle, then tap Continue to begin the process.
Monitor the status on your screen. The system will manage RPM and heat automatically.
The regen typically takes 30–60 minutes, depending on soot level.
Do not leave the vehicle unattended. The exhaust temperature can reach up to 500°F (260°C).
If an emergency occurs, turning off the ignition will immediately stop the regeneration.

After the Regeneration

Once complete:

Allow the engine to cool naturally before shutting it off.
Verify soot levels have dropped significantly on your EZ LYNK dashboard.
If levels remain high or fault codes appear, schedule a professional DPF inspection.

Final Safety Tips

Keep people and pets away from the tailpipe during regen.
Always perform this procedure in a well-ventilated outdoor area.
Regularly monitoring your DPF health through EZ LYNK helps extend engine life and improve performance.

Stationary DeSoot & DPF Regen Key Takeaways

A stationary DeSoot or DPF regeneration using EZ LYNK Auto Agent 3 on your Duramax L5P is a straightforward process—just follow the on-screen prompts carefully and observe all safety precautions to keep your diesel running clean and efficient.

Video Transcription:

Hey guys, we're back here in the Gen 4 Duramax. We're going to do another vehicle function with the Auto Agent.

We go back into our vehicle, make sure that we're connected, we've got functions, and today we're going to go over a Stationary DeSoot DPF Regen. So, we head in here, if you do a lot of idling, you're not going on long drives. You're going to see that soot level rise. You can actually check the soot level via the auto agent dashboard. So we go in, we've got a 45% soot load. If you see that getting up into the eighties, nineties and you're not driving enough to actually get that soot out of there, this is when you'd want to perform one of those functions.

So, we go into the function, we do a Stationary DeSoot Region. You need to make sure that you follow all of the instructions very carefully for safety. So we're going to run this. So, we need to make sure that the oil and coolant are at the correct levels. We need to make sure that there's enough fuel. If there's fault codes present with the DPF, do not regenerate.

We need to park the vehicle in an outdoor area away from property that could be damaged by high temperature from the exhaust. We need to put the vehicle in park and apply the parking brake. If it's a manual, we want it in the neutral gear. We don't use the throttle, clutch or brake during this DPF regeneration. It may interrupt it.

We want to open the hood to increase cooling in the engine bay. So, we're going to continue. During the DPF. The exhaust will reach 500 degrees. We need to keep all flammable materials away. We can't stress that enough. People should not approach the tailpipe. When the DPF is active, the engine RPM will increase while the regen cycle is cleaning. the DPF, always be watching the vehicle until it's complete. Turning the ignition off will immediately stop the DPF regeneration in case there's an emergency.

So, before we continue, we need to start the vehicle, then go to continue. And then here, we're going to see the status. This process could take 30 to 60 minutes depending on your vehicle and soot level.

Again, make sure that you follow the steps earlier in the video and park your vehicle in a spacious outdoor area away from any flammable materials. And that's how we initiate a stationary desert region. Make sure you check us out for more videos.