how to fix the P0455 code on my Tesla Outback 5th Generation (2015-2019)

Learn how to diagnose and fix P0455 fuel system leak in Subaru Outback 2015-2019. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the vehicle battery to prevent any electrical issues during repair.

2. Inspect and Replace Gas Cap

• Tools Required: None
• Remove the gas cap from the fuel filler neck.
• Inspect the rubber seal for cracks or wear; if damaged, replace with a new gas cap.
• Reinstall the gas cap and ensure it clicks securely.

3. Repair EVAP Hoses and Connections

• Tools Required: Pliers, hose clamps, cutting tool
• Locate all EVAP hoses and connections.
• If any hoses are cracked or damaged, cut out the damaged section and replace with new hose of the same diameter.
• Secure with hose clamps to ensure a tight fit.

4. Replace the Purge Valve (if faulty)

• Tools Required: Socket set, ratchet
• Locate the purge valve (typically near the intake manifold).
• Disconnect the electrical connector and vacuum lines from the purge valve.
• Remove the mounting bolts and take out the old purge valve.
• Install the new purge valve, tighten bolts to manufacturer specifications, reconnect vacuum lines, and electrical connector.

5. Perform a Smoke Test (if necessary)

• Tools Required: Smoke machine
• Connect the smoke machine to the EVAP system.
• Introduce smoke and observe for any leaks in the system.
• Repair any leaks found during the smoke test.