my Toyota Corolla E210 (2019-2024) keeps throwing P0455 code what does that mean

Learn how to diagnose and fix P0455 EVAP system leak in Toyota Corolla E210. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Tools Required: OBD-II scanner, smoke machine, basic hand tools (screwdrivers, pliers).
• Ensure the vehicle is parked on a level surface and the engine is cool.

2. Inspect and Replace Gas Cap

• Remove the gas cap and inspect for any damage.
• If damaged, replace the gas cap with a new one that meets OEM specifications.
• Reinstall the gas cap, ensuring it clicks securely.

3. EVAP System Inspection

• Tools Required: Basic hand tools, flashlight.
• Remove any protective covers if necessary to access the EVAP components.
• Check all hoses connected to the EVAP canister for cracks or disconnections.
• Tighten any loose connections or replace damaged hoses.

4. Smoke Test Procedure

• Connect the smoke machine to the EVAP system (typically at the fuel filler neck or through the purge valve).
• Activate the smoke machine to introduce smoke into the system.
• Observe for smoke escaping from any components, indicating leaks.
• Repair or replace any leaking components as identified.

5. Purge Valve Testing and Replacement

• Disconnect the electrical connector from the purge valve.
• Use a multimeter to check for continuity; if no continuity, replace the valve.
• If the valve is functioning, reconnect it and ensure it operates correctly when the engine is running.