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

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace the Gas Cap

• Tools Required: None
• Remove the gas cap and inspect for damage. If the rubber seal is cracked or the cap is not sealing properly, replace it with a new OEM gas cap.

3. Inspect and Replace Damaged EVAP Hoses

• Tools Required: Pliers, cutting tool
• Visually inspect all EVAP hoses and connections. If any hoses are cracked or damaged, cut the damaged sections out and replace them with new hoses. Ensure all clamps are secure.

4. Test and Replace the Purge Valve (if necessary)

• Tools Required: Socket set, multimeter
• Disconnect the electrical connector from the purge valve. Use a multimeter to test the valve for continuity. If the valve is faulty, remove it using a socket and replace it with a new one.

5. Test the EVAP Canister

• Tools Required: None
• If leaks are detected during the smoke test, replace the EVAP canister. Remove it from its mounting bracket and disconnect the lines. Install the new canister and reconnect all lines securely.

6. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0455 code and start the engine to check if the light remains off.