what does it mean if my Tesla Outback has a P0455 code

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

Solution

1. Preparation

• Gather tools: OBD-II scanner, multimeter, smoke machine, basic hand tools.
• Ensure the vehicle is parked on a level surface and the engine is off.

2. Inspect Fuel Cap

• Remove the fuel cap and visually inspect for cracks or damage.
• Clean the sealing surface of the fuel filler neck.
• Reinstall the fuel cap securely and ensure it clicks into place.

3. Check EVAP Components

• Locate the EVAP canister and visually inspect it for any signs of damage or cracks.
• Use a multimeter to test the resistance of the purge valve. Replace if it falls outside of manufacturer specifications.
• Check all hoses connected to the EVAP system for wear or disconnection.

4. Smoke Test

• Connect the smoke machine to the EVAP system through the service port.
• Activate the smoke machine and observe for smoke escaping from any leaks in the system.
• Repair any identified leaks by replacing damaged components or hoses.

5. Clear Codes and Test Drive

• After repairs, use the OBD-II scanner to clear the P0455 code.
• Start the vehicle and allow it to idle for a few minutes.
• Take the vehicle for a test drive to ensure the check engine light does not reappear.