If your CAT engine is showing codes like SPN 3719 FMI 0 or DPF Regen Needed, it may be time for a forced regeneration. Instead of heading to the dealer and wasting hours, you can do this yourself using a diesel laptop.

Here’s how to run a DPF regen on a CAT C7, C9, or C15 engine.

🛠 What You’ll Need:

• Our Diesel Laptop

• RP1210 adapter (like Nexiq USB-Link)

• Truck or equipment parked and engine idling

• Key turned on, engine warm

🔄 Step-by-Step: Run a CAT Regen

1. Connect your adapter to the truck or machine’s diagnostic port

2. Launch the CAT Software

3. Connect to the ECM and verify the connection

4. Go to Service > Aftertreatment Regeneration

5. Select “Start Regeneration”

6. Monitor soot level, exhaust temps, and RPM during the process

7. Regen takes 20 to 60 minutes depending on soot level

⚠️ Important:

Make sure these conditions are met:

• Coolant and oil temps are in normal range

• No active “inhibit” codes

• Park brake engaged

• No throttle input

If these conditions aren’t met, it will block the regen from starting.

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