how to fix P0455 code on my Toyota Camry XV70 (2018-2024)

Solution

1. Preparation

• Gather all tools and parts required for the repair.
• Disconnect the negative battery terminal for safety.
• Ensure the vehicle is parked on a level surface.

2. Inspect and Replace Gas Cap

• Tools Required: None required for gas cap inspection.
• Check if the gas cap is sealing properly; if damaged, replace it with a new one.
• Sub-steps:
  • Remove the gas cap and inspect the rubber gasket for cracks or wear.
  • Replace with a genuine Toyota gas cap if necessary.

3. Repair or Replace EVAP Components

• Tools Required: Socket set, screwdrivers, pliers.
• Depending on diagnostic findings, repair or replace any damaged hoses, valves, or the charcoal canister.
• Sub-steps:
  • Remove any clamps and disconnect hoses from the EVAP components.
  • Replace damaged hoses with new ones; ensure they are secured tightly.
  • For valve replacement, unbolt the faulty valve and install the new one, ensuring proper alignment for the connections.

4. Perform Smoke Test (if leaks were found)

• Tools Required: Smoke machine.
• Connect the smoke machine to the EVAP service port.
• Sub-steps:
  • Activate the smoke machine to fill the EVAP system with smoke.
  • Observe for smoke escaping from any cracks or loose connections.
  • Seal any identified leaks.

5. Reassembly and Reconnect Battery

• Reconnect all disconnected components and hoses.
• Reattach the gas cap securely.
• Reconnect the negative battery terminal.