how to fix misfire code P0302 on Volvo XC60 536 (2017-Present)

Learn how to diagnose and fix P0302 cylinder 2 misfire in Volvo XC60. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts required.
• Ensure the engine is cool.
• Disconnect the negative battery terminal for safety.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket
• Remove the ignition coil for cylinder 2 by unbolting and disconnecting the electrical connector.
• Unscrew and remove the spark plug using the spark plug socket.
• Inspect the spark plug for signs of wear or fouling.
• Install a new spark plug (ensure it matches OEM specifications).
• Torque the spark plug to the manufacturer's specifications (typically around 15-20 lb-ft).

3. Check and Replace Ignition Coil

• Reconnect the ignition coil to the electrical connector.
• If the coil is faulty, remove the old coil by unbolting it and disconnecting it from the spark plug.
• Install a new ignition coil for cylinder 2.
• Reconnect the electrical connector securely.

4. Inspect and Replace Fuel Injector

• Tools Required: Fuel injector removal tool, socket set
• Disconnect the fuel injector connector for cylinder 2.
• Remove the fuel rail if necessary to access the injector.
• Replace the injector with a new one, ensuring proper alignment and seals.
• Reconnect the fuel rail and fuel injector connectors.

5. Verification of Repairs

• Reconnect the negative battery terminal.
• Start the engine and let it idle, monitoring for smooth operation.
• Use the OBD-II scanner to clear the trouble codes.
• Test drive the vehicle to ensure that the check engine light does not reappear and that performance is normal.