how to fix P0455 EVAP leak in Honda CR-V Fifth Generation (2017-2022)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the vehicle's battery to prevent electrical shock.
• Ensure the vehicle is on a level surface and secure with wheel chocks.

2. Inspect and Replace Fuel Filler Cap

• Tools Required: None specific.
• Remove the existing fuel filler cap and inspect for cracks or wear.
• If damaged, replace with a new OEM fuel filler cap.

3. Inspect and Repair EVAP Hoses

• Tools Required: Pliers, socket set.
• Visually inspect all EVAP hoses connected to the fuel tank, charcoal canister, and purge valve.
• If any hoses are cracked or damaged, replace them with OEM parts.
• Use hose clamps to secure connections properly.

4. Check and Replace Charcoal Canister (if necessary)

• Tools Required: Socket set, pliers.
• Locate the charcoal canister, typically found underneath the vehicle, near the fuel tank.
• Disconnect any electrical connectors and hoses.
• Remove the canister from its mounting bracket.
• Inspect for damage; if cracked or leaking, replace with a new canister.
• Reinstall the new canister and reconnect hoses and electrical connectors.

5. Test EVAP Purge and Vent Valves

• Tools Required: Multimeter.
• Disconnect the electrical connectors from the purge and vent valves.
• Test the resistance of the valves using a multimeter; compare readings with specifications.
• If either valve is faulty, replace with OEM parts and reconnect.

6. Reconnect Battery and Clear Codes

• Reconnect the vehicle's battery.
• Use the OBD-II scanner to clear the P0455 code.
• Start the vehicle and let it run for a few minutes to ensure all systems are operational.