how to fix the P0455 code on my Volkswagen Golf Seventh Generation (2013-2020)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to prevent any electrical shorts.

2. Inspect and Replace Gas Cap

• Sub-steps:
  • Remove the gas cap and inspect the sealing surface for damage.
  • If damaged, replace the gas cap with a new one that meets OEM specifications.
  • Reinstall the gas cap securely and ensure it clicks into place.

3. Repair/Replace EVAP Hoses

• Sub-steps:
  • Locate the EVAP hoses running from the fuel tank to the purge valve.
  • Inspect each hose for cracks, leaks, or disconnections.
  • If any hose is damaged, remove the old hose using cutting pliers and replace it with a new, OEM-quality hose.
  • Reconnect all hoses securely, ensuring there are no kinks.

4. Inspect and Replace Purge Valve

• Sub-steps:
  • Locate the EVAP purge valve (typically near the intake manifold).
  • Disconnect the electrical connector and vacuum hoses from the valve.
  • Use a multimeter to test the purge valve for continuity; replace if defective.
  • Install a new purge valve by reversing the removal steps, ensuring all connections are secure.

5. Smoke Test (if necessary)

• Sub-steps:
  • Connect a smoke machine to the EVAP system using the service port.
  • Turn on the smoke machine and monitor for any smoke escaping from the system.
  • Identify and repair any leaks found during the smoke test by replacing damaged components.