how to fix P0302 code on my Volvo XC60 Second Generation (2018-2024)

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 materials.
• Disconnect the negative battery terminal to prevent electrical shorts.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Compression gauge
• Fuel injector cleaning kit (if needed)

2. Inspect and Replace Ignition Coil

1. Locate the ignition coil for cylinder 2 (consult the service manual for precise location).
2. Disconnect the electrical connector from the ignition coil.
3. Remove the bolt(s) securing the ignition coil using a socket.
4. Carefully pull the ignition coil out of the spark plug hole.
5. Inspect the coil for cracks or carbon tracking; replace if damaged.
6. Install the new ignition coil by reversing the removal steps.

3. Inspect and Replace Spark Plug

1. Use a spark plug socket to remove the spark plug from cylinder 2.
2. Inspect the spark plug for wear, carbon buildup, or damage; replace if necessary.
3. Gapping the new spark plug to manufacturer specifications (if applicable).
4. Install the new spark plug and torque it to the manufacturer’s specifications (typically between 13-20 lb-ft).

4. Test Fuel Injector

1. Disconnect the fuel injector connector for cylinder 2.
2. Use a multimeter to check the resistance of the injector. Compare it to specifications in the service manual.
3. If the injector is faulty, remove it using the appropriate tools.
4. Clean or replace the injector as needed.
5. Reinstall the injector and reconnect the electrical connector.

5. Perform Compression Test

1. Remove the spark plug from cylinder 2.
2. Insert the compression gauge into the spark plug hole.
3. Crank the engine and record the compression reading. Compare it with the manufacturer's specifications.
4. If compression is low, further diagnostics may be needed (e.g., checking valve seals, piston rings).