how to fix P0455 EVAP code on my Toyota Corolla E170 (2013-2019)

Learn how to diagnose and fix P0455 EVAP code in Toyota Corolla E170 (2013-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative terminal of the battery to ensure safety.
• Allow the engine to cool down if recently operated.

2. Inspect and Replace the Gas Cap

• Remove the gas cap and inspect for cracks or damage.
• If damaged, replace with a new gas cap that meets OEM specifications.
• Ensure the gas cap is tightened securely after replacement.

3. Repair or Replace EVAP Hoses

• Follow the hoses from the fuel tank to the EVAP canister.
• If any hoses are damaged or disconnected, replace them with new hoses.
• Use a hose clamp to secure connections as needed.

4. Test and Replace EVAP Purge Valve (if necessary)

• Locate the EVAP purge valve, usually mounted on or near the intake manifold.
• Disconnect the electrical connector and vacuum lines.
• Using a multimeter, test the valve operation according to the service manual specifications.
• If faulty, replace the valve with a new unit.

5. Test and Replace EVAP Vent Valve (if necessary)

• Locate the EVAP vent valve, typically found near the fuel tank.
• Disconnect the electrical connector and vacuum lines.
• Test the valve operation with a multimeter.
• Replace the vent valve if it fails the test.

6. Reconnect Battery and Clear Codes

• Reconnect the negative terminal of the battery.
• Use the OBD-II scanner to clear any stored codes.
• Start the engine and verify that the check engine light is off.