how to fix P0455 EVAP leak code in Honda CR-V Sixth Generation (2023-present)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a flat surface, and the engine is off.
• Disconnect the battery negative terminal to prevent electrical shorts.

2. Inspect and Replace Fuel Cap

• Inspection: Check the fuel cap for cracks or a worn seal.
• Replacement:
  1. Remove the old fuel cap by turning it counterclockwise.
  2. Install a new fuel cap by turning it clockwise until it clicks into place.

3. Inspect and Replace Damaged Hoses

• Inspection: Examine the EVAP hoses connected to the fuel tank, charcoal canister, and purge valve.
• Replacement:
  1. Use pliers to loosen clamps securing the hoses.
  2. Remove any damaged hoses.
  3. Cut new hoses to the appropriate length and secure them with clamps.

4. Smoke Test the EVAP System

• Setup: Connect a smoke machine to the EVAP service port.
• Testing:
  1. Activate the smoke machine and monitor for smoke escaping from any component.
  2. Identify any leaks and replace the affected parts (hoses, canister, valves) as necessary.

5. Replace Charcoal Canister (if needed)

• Removal:
  1. Disconnect the electrical connector and hoses from the canister.
  2. Remove any mounting bolts or screws securing the canister.
• Installation:
  1. Install the new charcoal canister in the reverse order of removal.
  2. Reconnect the hoses and electrical connector securely.

6. Clear Codes and Recheck

• Reconnect the battery terminal and clear the P0455 code using an OBD-II scanner.
• Start the engine and allow it to run for a few minutes to ensure the issue is resolved.