how to fix P0301 misfire code on Volvo XC60 Second Generation (2018-2024)

Learn how to diagnose and fix P0301 cylinder 1 misfire in Volvo XC60 (2018-2024). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts required.
• Ensure the vehicle is parked on a level surface and engine is cool.
• Disconnect the battery to prevent electrical shock.

2. Remove Ignition Coil and Spark Plug

• Remove any engine covers if necessary using a socket set.
• Disconnect the electrical connector from the ignition coil in cylinder 1.
• Remove the ignition coil bolt with a socket wrench and carefully pull the coil out.
• Use a spark plug socket to remove the spark plug from cylinder 1.

3. Inspect and Replace Spark Plug

• Inspect the spark plug for excessive wear, carbon buildup, or damage.
• Replace with a new spark plug that meets OEM specifications (usually NGK or Volvo OEM).
• Torque the new spark plug to the manufacturer’s specification (typically around 15-20 lb-ft).

4. Inspect and Replace Ignition Coil

• Inspect the ignition coil for cracks or corrosion.
• If damaged, replace with a new ignition coil that is compatible with the vehicle.
• Reinstall the ignition coil in cylinder 1 and secure it with the bolt.
• Reconnect the electrical connector to the ignition coil.

5. Check and Replace Fuel Injector (if necessary)

• If the injector is suspected to be faulty, remove it using a fuel injector removal tool.
• Inspect the injector for clogs or damage.
• Clean or replace the fuel injector based on its condition and reinstall it.

6. Reconnect Battery and Test

• Reconnect the battery terminals.
• Start the engine and let it warm to operating temperature.
• Clear the P0301 code using an OBD-II scanner.