how to fix P0455 EVAP leak code in Toyota Camry Eighth Generation (2018-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle battery to ensure safety while working on electrical components.

2. Inspect and Replace Gas Cap

• Tools Required: None
• Remove the existing gas cap and inspect it for wear or damage.
• If necessary, replace it with a new OEM gas cap.
• Reinstall the gas cap and ensure it clicks securely.

3. Inspect EVAP Hoses and Components

• Tools Required: Basic hand tools (screwdriver, pliers)
• Visually inspect all EVAP hoses for cracks or disconnections.
• If any hoses are damaged, remove them and install new hoses as needed.
• Reconnect any disconnected hoses securely.

4. Smoke Test EVAP System

• Tools Required: Smoke machine
• Connect the smoke machine to the EVAP service port.
• Activate the smoke machine and look for smoke escaping from any leaks in the system.
• If a leak is found, replace the faulty component (e.g., purge valve, vent valve, or charcoal canister) as necessary.

5. Test Purge and Vent Valves

• Tools Required: Multimeter
• Disconnect the electrical connectors from the purge and vent valves.
• Use a multimeter to test the resistance of the valves according to specifications (refer to service manual).
• Replace any valve that does not meet specifications.

6. Reassemble and Reset the System

• Reconnect any electrical connectors and hoses removed during the repair.
• Reconnect the vehicle battery.
• Use the OBD-II scanner to clear the P0455 code and any other related codes.