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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace the Gas Cap

• Tools Required: None
• Remove the gas cap and inspect the sealing ring for damage.
• If damaged, replace with a new OEM gas cap.
• Reinstall the gas cap securely.

3. Repair or Replace Damaged EVAP Hoses

• Tools Required: Pliers, socket set
• Locate and inspect all EVAP hoses connected to the canister, purge valve, and fuel tank.
• If any hoses are cracked or damaged, remove them using pliers and replace with new hoses. Ensure they are securely connected.

4. Replace the EVAP Purge Valve

• Tools Required: Socket set, screwdriver
• Locate the EVAP purge valve, usually found near the intake manifold.
• Disconnect the electrical connector and vacuum lines from the valve.
• Remove the mounting bolts and replace the purge valve with a new one.
• Reconnect the vacuum lines and electrical connector.

5. Test the EVAP System

• Tools Required: Smoke machine or EVAP tester
• Using a smoke machine, introduce smoke into the EVAP system to check for leaks.
• Observe for any smoke escaping from hoses or connections.
• Repair any leaks found during this inspection.

6. Reset the Check Engine Light

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0455 code and reset the check engine light.