how do I fix the P0455 code in my Honda CR-V Fifth Generation (2017-2022)

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool down.

2. Inspect and Replace Gas Cap

• Remove the gas cap and check for any damage.
• If damaged, replace it with a new OEM gas cap.
• Ensure the new gas cap is properly tightened.

3. Repair or Replace EVAP Hoses

• Identify any damaged hoses during inspection.
• Use a socket set to remove the damaged hoses.
• Install new hoses by securing them with hose clamps, ensuring no kinks are present.

4. Smoke Test the EVAP System

• Connect a smoke machine to the EVAP service port.
• Introduce smoke into the system and observe for leaks.
• If leaks are found, repair or replace the affected components (e.g., hoses, canister).

5. Replace EVAP Canister (if necessary)

• Disconnect the wiring harness and hoses from the EVAP canister.
• Use a socket set to unbolt the canister from its mounting location.
• Install the new canister and reconnect all hoses and wiring securely.

6. Test Purge and Vent Valves

• Remove the purge valve and test it with a multimeter to ensure it operates correctly.
• Replace it if it fails the test.
• Check the vent valve for proper functionality and replace if necessary.