how to fix the P0455 code in my Tesla Outback 4th Generation (2010-2014)

Learn how to diagnose and fix P0455 EVAP system leak in Subaru Outback 2010-2014. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the vehicle's battery to prevent electrical shorts.

Tools Required:

• OBD-II scanner
• Socket set
• Screwdrivers
• Smoke machine (for smoke testing)
• Multimeter

2. Inspect and Replace the Gas Cap

• Sub-steps:
  • Remove the gas cap and check for any visible damage.
  • If damaged, replace with a new gas cap that meets OEM specifications.
  • Reinstall the gas cap and ensure it clicks into place securely.

3. Check and Replace EVAP Hoses

• Sub-steps:
  • Locate the EVAP hoses connected to the fuel tank and charcoal canister.
  • Inspect for cracks, wear, or disconnections and replace any damaged hoses.
  • Ensure all connections are tight and secure.

4. Repair or Replace the EVAP Purge Valve

• Sub-steps:
  • Locate the EVAP purge valve, typically near the intake manifold.
  • Disconnect the electrical connector and vacuum lines.
  • Test the valve using a multimeter to check for continuity.
  • Replace the valve if it fails the test or shows signs of damage.

5. Smoke Test the EVAP System

• Sub-steps:
  • Connect the smoke machine to the EVAP system through the service port.
  • Activate the smoke machine and watch for smoke escaping from any leaks.
  • Repair any detected leaks, replacing faulty components as necessary.