my Volvo XC60 536 (2017-Present) has a check engine light and code P0301

Learn how to diagnose and fix P0301 cylinder 1 misfire in Volvo XC60. 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 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 by unbolting it and disconnecting the electrical connector.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for wear; replace if damaged or fouled.
• Install the new spark plug and torque to manufacturer's specifications (usually around 13-15 lb-ft).

3. Inspect and Replace Ignition Coil

• Check the ignition coil for signs of damage or wear.
• If faulty, remove the ignition coil by unbolting and disconnecting it from the harness.
• Install the new ignition coil and ensure the connector is secure.
• Reattach the ignition coil to its mounting point.

4. Check Fuel Injector

• Tools Required: Noid light or multimeter.
• Disconnect the fuel injector connector.
• Connect the noid light to the injector harness to check for pulse; if not pulsing, further diagnostics are needed.
• If faulty, remove the fuel injector and replace it with a new one, ensuring O-rings are lubricated and properly seated.

5. Reassemble and Test

• Reconnect the negative battery terminal.
• Start the engine and let it idle to ensure smooth operation.
• Check for any new error codes using the OBD-II scanner.