how to fix P0455 code in Volvo XC60 Second Generation (2018-2024)

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

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the vehicle's battery to prevent electrical shorts.

2. Inspect and Replace Gas Cap

• Tools Required: None specifically for this step.
• Ensure the gas cap is securely tightened; if cracked or damaged, proceed to replace it.
• If replacement is necessary, remove the old cap and install a new OEM or quality replacement gas cap.

3. Repair or Replace EVAP Hoses

• Tools Required: Pliers, socket set, or wrenches.
• Inspect all EVAP hoses for damage. If any hoses are cracked or disconnected:
  • Use pliers to loosen hose clamps (if applicable).
  • Remove the damaged hose and replace it with a new one, ensuring a secure fit.
  • Reattach hose clamps as necessary and ensure all connections are tight.

4. Replace EVAP Purge Valve (if needed)

• Tools Required: Socket set, torque wrench.
• Locate the EVAP purge valve, typically found near the intake manifold or on the engine.
• Disconnect the electrical connector and remove any mounting bolts.
• Install the new valve, tightening to the manufacturer’s torque specifications.
• Reconnect the electrical connector.

5. Perform a Smoke Test

• Tools Required: Smoke machine (or hand pump and smoke fluid).
• Connect the smoke machine to the EVAP service port.
• Activate the machine to introduce smoke into the system.
• Inspect all connections and components for smoke leaks; repair any leaks found.

6. Clear Codes and Recheck

• Use the OBD-II scanner to clear the P0455 code from the system.
• Start the engine and allow it to reach operating temperature.
• Monitor for any reoccurrence of the code.