how to fix the P0455 code on my Volkswagen Golf MK6 (2009-2014)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the vehicle's battery to ensure safety while working on electrical components.

2. Inspect and Replace the Gas Cap

• Sub-steps:
  • Remove the gas cap by turning it counterclockwise.
  • Inspect the rubber seal for any cracks or foreign material.
  • If damaged, replace with a new gas cap that meets OEM specifications.
  • Reinstall the new gas cap and ensure it clicks into place.

3. Repair or Replace EVAP Hoses and Connections

• Sub-steps:
  • Locate the EVAP system hoses connected to the charcoal canister and purge valve.
  • Remove any damaged hoses by loosening clamps and pulling them off.
  • Replace with new hoses that match OEM specifications.
  • Reconnect hoses securely and ensure all clamps are tight.

4. Test the Purge and Vent Valve

• Sub-steps:
  • Locate the EVAP purge valve and vent valve.
  • Disconnect the electrical connectors and use a multimeter to test for continuity.
  • If the valves do not show continuity or are stuck open/closed, replace them with new units.
  • Reconnect the electrical connectors after installation.

5. Smoke Test and Repair the Charcoal Canister

• Sub-steps:
  • If leaks are found during the smoke test, replace the charcoal canister if it is saturated or damaged.
  • Disconnect the canister from the EVAP system and remove it from its mounting.
  • Install the new canister, reconnecting all hoses and electrical connectors securely.

6. Clear Codes and Reconnect Battery

• Sub-steps:
  • Use the OBD-II scanner to clear the P0455 code from the system.
  • Reconnect the battery terminal.
  • Start the vehicle and allow it to reach operating temperature.