how to resolve P0455 code on Skoda Octavia NFL (2020-Present)

Learn how to diagnose and fix P0455 fuel system issue in Skoda Octavia NFL. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the battery to prevent electrical shorts.
• Allow the vehicle to cool down to avoid burns.

2. Inspect and Replace Gas Cap

• Tools Required: None
• Remove the gas cap and inspect for cracks or wear.
• If damaged, replace with a new gas cap, ensuring it is the correct type for the Skoda Octavia NFL.

3. Inspect and Repair EVAP Hoses

• Tools Required: Pliers, socket set
• Remove any protective covers if necessary.
• Check for any cracks or disconnections in the EVAP hoses.
• If damaged, replace the affected hoses with OEM parts.

4. Perform Smoke Test

• Tools Required: Smoke machine
• Connect the smoke machine to the EVAP service port.
• Activate the machine and observe for smoke escaping from any component, indicating a leak.
• Repair or replace any components where smoke is detected.

5. Test and Replace Purge and Vent Valves (if necessary)

• Tools Required: Multimeter
• Disconnect the electrical connectors from the purge and vent valves.
• Use a multimeter to test the valves for continuity and proper operation.
• If faulty, replace with OEM parts.

6. Reassemble and Reconnect

• Reconnect any hoses or electrical connectors that were disconnected during inspection.
• Reconnect the battery and ensure all components are secured.