how to check if the DPF is clogged in my Volkswagen Golf MK6 (2009-2014)

Learn how to diagnose and fix P2002 DPF clogging in Volkswagen Golf MK6. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Tools Required: OBD-II scanner, manometer, thermal imaging camera or infrared thermometer, socket set, and safety goggles.
• Safety Warnings: Allow the engine to cool before working on exhaust components. Wear safety goggles to protect your eyes.

2. Remove DPF (if necessary)

• Step 1: Disconnect the negative battery terminal to ensure safety.
• Step 2: Raise the vehicle using a jack and secure it with jack stands.
• Step 3: Remove the exhaust hangers and bolts securing the DPF to the exhaust system using a socket set.
• Step 4: Carefully detach any sensors (pressure/temp) connected to the DPF, making note of their positions.
• Step 5: Remove the DPF from the vehicle.

3. Clean or Replace DPF

• Step 1: Inspect the DPF for significant blockages or damage.
• Step 2: If clogged, consider using a DPF cleaning solution and following the product instructions for cleaning.
• Step 3: If damage is present or cleaning is ineffective, replace the DPF with a new unit.
• Step 4: Reinstall the cleaned or new DPF by reversing the removal steps, ensuring all connections are secure.

4. Reconnect and Test

• Step 1: Reconnect the negative battery terminal.
• Step 2: Start the engine and check for any exhaust leaks and ensure the DPF is functioning properly.
• Step 3: Perform a short test drive to allow the system to regenerate and monitor for any warning lights.