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

Solution

1. Preparation

• Gather all necessary tools: OBD-II scanner, multimeter, smoke machine, and basic hand tools.
• Ensure the vehicle is parked on a level surface and the engine is turned off.

2. Inspect and Replace Gas Cap

• Sub-step 1: Remove the gas cap and inspect for any signs of damage or debris.
• Sub-step 2: If damaged, replace the gas cap with a new one, ensuring it meets OEM specifications (part number may vary).
• Tools Required: None specifically for this step.

3. Inspect and Replace EVAP Hoses

• Sub-step 1: Locate the EVAP hoses connected to the fuel tank and EVAP canister.
• Sub-step 2: Check for cracks, wear, or disconnections; replace any damaged hoses with new ones.
• Tools Required: Basic hand tools (socket set, pliers).

4. Smoke Test the EVAP System

• Sub-step 1: Connect the smoke machine to the EVAP service port.
• Sub-step 2: Activate the smoke machine and observe for smoke leaks from the EVAP system.
• Sub-step 3: Repair any leaks found, focusing on cracked hoses, the canister, or valve areas.
• Tools Required: Smoke machine.

5. Test and Replace Purge and Vent Valves

• Sub-step 1: Disconnect the electrical connectors from the purge valve and vent valve.
• Sub-step 2: Use a multimeter to test for continuity and proper operation.
• Sub-step 3: If either valve fails the test, replace it with a new OEM valve.
• Tools Required: Multimeter, hand tools for valve replacement.