how to fix P0455 large EVAP leak in Volvo XC60 Second Generation (2018-2024)

Learn how to diagnose and fix P0455 large EVAP leak in Volvo XC60 (2018-2024). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the battery to avoid electrical issues during repair.

2. Inspect and Replace Gas Cap

• Sub-steps:
  • Remove the existing gas cap and inspect for damage.
  • If damaged, replace it with a new OEM gas cap.
  • Ensure the new gas cap clicks into place securely.
• Tools Required: None.

3. Inspect and Repair EVAP Hoses

• Sub-steps:
  • Locate the EVAP hoses connected to the fuel tank and canister.
  • Check for cracks, kinks, or loose connections.
  • Replace any damaged hoses with OEM parts.
  • Ensure all connections are secure and properly fitted.
• Tools Required: Pliers, hose clamp tool (if necessary).

4. Test and Replace EVAP Canister (if needed)

• Sub-steps:
  • Remove the EVAP canister from its mounting location.
  • Inspect for cracks or damage.
  • If damaged, replace the canister with an OEM part.
  • Reinstall the canister, ensuring all connections are tight.
• Tools Required: Socket set, torque wrench.
• Torque Values: Follow manufacturer specifications for canister mounting.

5. Inspect and Replace Purge Valve

• Sub-steps:
  • Locate the EVAP purge valve connected to the intake manifold.
  • Disconnect the electrical connector and vacuum lines.
  • Test the purge valve for functionality using a multimeter.
  • If faulty, replace with an OEM replacement.
  • Reconnect all lines and connectors securely.
• Tools Required: Multimeter, socket set.