how to fix P0455 code in Toyota Corolla E140 (2006-2013)

Learn how to diagnose and fix P0455 code in Toyota Corolla E140. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the vehicle's battery to prevent electrical shock.
• Ensure the vehicle is on a level surface and secure it with wheel chocks.

2. Inspect and Replace the Gas Cap

• Sub-steps:
  • Remove the existing gas cap and inspect the rubber seal for wear or damage.
  • If damaged, replace it with a new gas cap that meets OEM specifications.
• Tools Required: None specific.

3. Check and Replace EVAP Hoses

• Sub-steps:
  • Locate the EVAP hoses connected to the fuel tank and EVAP canister.
  • Inspect each hose for cracks or loose connections.
  • If any hoses are damaged, replace them with new hoses designed for the vehicle.
• Tools Required: Pliers and hose clamps if necessary.

4. Perform Smoke Test

• Sub-steps:
  • Connect a smoke machine to the EVAP system through the service port.
  • Activate the smoke machine and observe for smoke escaping from any leaks.
  • Repair or replace components as necessary based on where leaks are found.
• Tools Required: Smoke machine.

5. Test and Replace Purge and Vent Valves

• Sub-steps:
  • Disconnect the electrical connectors from the purge and vent valves.
  • Use a multimeter to check for continuity and correct resistance.
  • Replace any faulty valves with new OEM replacements.
• Tools Required: Multimeter, socket set.

6. Reassemble and Clear Codes

• Sub-steps:
  • Reconnect all hoses, valves, and electrical connectors.
  • Reconnect the battery.
  • Use an OBD-II scanner to clear the P0455 code from the system.
• Tools Required: OBD-II scanner.