how to deal with a P0455 code in my Toyota Corolla E170 (2013-2019)?

Learn how to diagnose and fix P0455 fuel system issue in Toyota Corolla E170. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a flat surface and the engine is cool.

2. Inspect and Replace the Gas Cap

• Tools Required: None specific.
• Instructions:
  1. Remove the existing gas cap.
  2. Inspect for damage or wear on the sealing surface.
  3. If damaged, replace with a new gas cap that meets OEM specifications.

3. Inspect and Replace Damaged Hoses

• Tools Required: Pliers, utility knife.
• Instructions:
  1. Remove any clamps holding the EVAP hoses in place using pliers.
  2. Cut and remove any damaged sections of hose.
  3. Install new hoses, ensuring they fit securely and are routed correctly.
  4. Reattach clamps.

4. Test and Replace the EVAP Canister

• Tools Required: Socket set, torque wrench.
• Instructions:
  1. Locate the EVAP canister, usually positioned near the fuel tank.
  2. Disconnect electrical connectors and hoses attached to the canister.
  3. Unbolt the canister using a socket set and remove it.
  4. Install the new canister, tightening bolts to manufacturer torque specifications.
  5. Reconnect the electrical connectors and hoses.

5. Replace the Purge and Vent Valves

• Tools Required: Socket set, wrench.
• Instructions:
  1. Locate the purge valve (often near the intake manifold) and vent valve (near the EVAP canister).
  2. Disconnect the electrical connectors and hoses.
  3. Remove the valves using a socket set.
  4. Install new valves, ensuring they are oriented correctly.
  5. Reconnect electrical connectors and hoses.