Park outdoors or in a well-ventilated area. Parking brake on, transmission in P (auto) or N (manual), engine hood closed. Exhaust temperature reaches up to 300 °C at the tailpipe - keep flammables away.

Connect the OBD2 scanner to the OBD2 port, switch ignition ON, and wait for VIN identification.

Navigate: Volkswagen → Automatic selection → Hot functions → Engine Control Module 1 → 01 - Engine electronics 1.6-2.0 TDI EU6.

Select 0001 - Service regeneration, particle filter.

Confirm test requirements (fuel ≥ ¼, parking brake set, hood closed, transmission in P/N) and read the safety warning about exhaust temperature. Press Done/Continue.

Evaluation during idling: let the engine run at idle. Scanner reads differential pressure at idle (in this case ~26 mbar).

When prompted, slowly raise RPM to ~2,500. Scanner reads pressure differential at increased idle (in this case ~92 mbar). Press Done/Continue when "Test successful" appears.

Initiate regeneration: depress the brake pedal when prompted. Scanner starts monitoring temperatures (before turbo / before DPF).

If a "Error during control unit communication" message appears but the RPM has risen and temperatures are climbing past 300–600 °C — regeneration is active in the background. Press Continue to keep the test running.

Monitor temperatures until they exceed ~600 °C and regeneration status shows "Warm-up phase 2" or further stages. Do not interrupt the cycle.

When regeneration completes, exit the hot function and run 0001 - Adapt Diesel Particle Filter (DPF) adapt. values. Confirm with Yes only if the DPF or related component was replaced — otherwise select No.

When prompted, switch ignition OFF, wait ~20 seconds for the ECU to save updated soot counters, then ignition ON.

Verify soot mass has dropped and no new DPF-related DTCs are stored. Clear any codes.