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

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: OBD-II scanner, socket set, torque wrench, compression tester, noid light, multimeter, and basic hand tools.
• Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Replace Spark Plug

• Remove the ignition coil from cylinder 1 by unscrewing it (usually requires a socket).
• Carefully pull the ignition coil away from the spark plug.
• Unscrew and remove the old spark plug using a spark plug socket.
• Install the new spark plug, ensuring it is torqued to the manufacturer’s specifications (typically around 20-25 Nm).
• Reattach the ignition coil and secure it.

3. Inspect and Replace Ignition Coil

• If the ignition coil was found to be faulty during diagnostics, remove it from cylinder 1.
• Install a new ignition coil, ensuring it clicks securely into place.
• Reconnect the electrical connector to the ignition coil.

4. Check and Replace Fuel Injector (if necessary)

• Disconnect the fuel injector connector on cylinder 1.
• Remove the fuel rail (if applicable) to access the injector, taking care to relieve fuel pressure first.
• Replace the faulty fuel injector with a new one and ensure it is seated properly.
• Reattach the fuel rail and reconnect the injector electrical connector.

5. Final Assembly and Check

• Reconnect the negative battery terminal.
• Start the engine and allow it to idle to check for any abnormal sounds or leaks.