If your Volvo truck is warning you about high soot levels, derate mode, or codes like SPN 3720, it's time for a parked regeneration. This burns off excess soot from the DPF and can help prevent serious damage or costly downtime.

Here’s how to perform a parked regen on a Volvo D13 using your diesel laptop.

🛠 What You’ll Need:

• A diesel laptop diagnostic kit

🔄 Step-by-Step: Start a Parked Regen on Volvo D13

1. Plug in your adapter and open your diagnostic software

2. Connect to the engine ECM

3. Navigate to Aftertreatment > Regeneration Functions

4. Select “Parked Regen” or “DPF Regeneration”

5. Verify all conditions are met:

   • No active inhibit codes

   • Soot level is above regen threshold

   • Park brake set

   • Transmission in neutral

6. Click Start and monitor RPM, EGT, and soot level during the process

⏱ How Long Does It Take?

A typical parked regen takes 20 to 40 minutes. The engine will automatically increase RPM and exhaust temp. When soot levels drop and the RPM lowers, the regen is complete.

⚠️ If Regen Won’t Start:

• Make sure coolant and oil temps are at operating level

• Clear any inhibit faults

• Check for failed sensors (NOx, DPF, temp)

• Ensure no DEF system issues are present

💡 Pro Tip:

Doing regular parked regens with a diesel scanner can prevent forced regen situations and save thousands in downtime.

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