how to fix P0455 code on Volkswagen Golf MK7.5 (2020-Present)

Solution

1. Preparation

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

2. Inspect and Replace the Fuel Cap

• Tools Required: None specific
• Inspect the fuel cap for cracks or damage.
• Replace with a new OEM fuel cap if defective.

3. Check EVAP Hoses and Connections

• Tools Required: Pliers, vacuum gauge
• Visually inspect all EVAP hoses and connections for cracks or disconnections.
• Replace any damaged hoses with OEM parts.
• Ensure all connections are secure.

4. Inspect and Replace the EVAP Canister

• Tools Required: Socket set, torque wrench
• Locate the EVAP canister, typically located near the fuel tank.
• Remove the bolts securing the canister and unplug any electrical connectors.
• Replace the canister with a new OEM part.
• Reattach and torque bolts to manufacturer's specifications.

5. Test the Purge and Vent Valve

• Tools Required: Multimeter, automotive power supply
• Locate the purge valve and vent valve.
• Test the electrical connections and operation by applying power directly to the valves.
• Replace any faulty valves with OEM replacements.

6. Clear Codes and Test Drive

• Tools Required: OBD-II scanner
• Use the scanner to clear the P0455 code.
• Conduct a test drive to ensure the check engine light does not reappear and the system operates correctly.