how to fix P0302 code in 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 parts required for the repair.
• Disconnect the negative battery terminal to ensure safety while working on the electrical components.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Compression tester
• Multimeter (if applicable)

2. Inspect and Replace Ignition Components

• Ignition Coil:

  • Remove the engine cover (if applicable).
  • Disconnect the electrical connector from the ignition coil on cylinder 2.
  • Remove the bolts securing the ignition coil using a socket.
  • Pull the ignition coil out of the spark plug hole.
  • Install the new ignition coil and secure it with bolts to the specified torque (usually around 7-10 Nm).
  • Reconnect the electrical connector.

• Spark Plug:

  • Using a spark plug socket, remove the spark plug from cylinder 2.
  • Inspect the spark plug for wear or damage; replace with a new spark plug if necessary (gap according to manufacturer specifications).
  • Torque the new spark plug to the manufacturer’s specification (typically around 20-30 Nm).

3. Check and Replace Fuel Injector (if necessary)

• Disconnect the electrical connector and fuel line from the fuel injector for cylinder 2.
• Remove the retaining clips and pull the injector out of the manifold.
• Install the new fuel injector and secure it with the retaining clips.
• Reconnect the fuel line and electrical connector.

4. Perform Compression Test

• If misfire persists, perform a compression test on cylinder 2.
• Remove the spark plug and insert the compression tester.
• Crank the engine several times and record the compression reading.
• Compare the reading with specifications; if low, further engine diagnosis is required.

5. Reassemble and Clear Codes

• Reinstall any components removed during the repair.
• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0302 code from the system.