how to fix a misfire in my Volvo XC60 Second Generation (2018-2024) with code P0302

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 necessary tools and parts.
• Ensure the engine is cool and disconnect the battery.
• Raise the vehicle if needed for better access.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the ignition coil cover.
• Disconnect the electrical connector from the ignition coil.
• Remove the ignition coil from cylinder 2.
• Unscrew and remove the spark plug.
• Inspect the spark plug for wear or fouling; replace if damaged.
• Install a new spark plug, ensuring it is gapped correctly (consult specifications for gap).
• Torque the spark plug to the manufacturer's specifications (typically around 13-15 lb-ft).

3. Inspect and Replace Ignition Coil

• If the spark plug appears normal, inspect the ignition coil.
• Replace the ignition coil for cylinder 2 with a new one.
• Reinstall the ignition coil and reconnect the electrical connector.

4. Check and Clean Fuel Injector

• Tools Required: Fuel injector cleaning kit or replacement injector.
• Disconnect the fuel injector connector.
• Remove the fuel rail to access the injector.
• Inspect the fuel injector for clogs or damage; clean or replace as necessary.
• Reinstall the fuel injector and fuel rail, ensuring all seals are in place.

5. Reassemble and Reconnect Battery

• Reattach any components removed during the process.
• Reconnect the battery.