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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Ensure the vehicle is on a flat surface and secure it with wheel chocks.

2. Inspect and Replace the Gas Cap

• Tools required: None.
• Inspect the gas cap for cracks or damage.
• If the cap is damaged, replace it with a new one.
• Ensure the new gas cap clicks into place firmly.

3. Inspect and Repair EVAP System Components

• Tools required: Socket set, wrench set, flashlight.
• Remove any covers obstructing access to the EVAP canister and lines.
• Visually inspect all hoses connected to the EVAP system for cracks or disconnections.
• Replace any damaged hoses with OEM parts, ensuring proper fitment.

4. Perform a Smoke Test

• Tools required: Smoke machine.
• Connect the smoke machine to the EVAP service port.
• Activate the machine and observe for smoke leaks.
• If smoke is detected, identify the source and replace the affected component (e.g., hoses, canister).

5. Test and Replace the Purge and Vent Valves

• Tools required: Multimeter.
• Disconnect the electrical connectors from the purge valve and vent valve.
• Use a multimeter to check the resistance of each valve; compare readings with specifications.
• Replace any faulty valves with OEM replacements.

6. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0455 code.
• Start the engine and allow it to reach operating temperature.