why does my Volvo XC60 have a check engine light with P0302 code?

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 necessary tools and parts.
• Disconnect the battery to ensure safety while working on electrical components.

2. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover if applicable.
  2. Locate and remove the spark plug for cylinder 2 using a socket wrench.
  3. Inspect the spark plug for signs of fouling, wear, or damage.
  4. Replace the spark plug with a new one specified for your vehicle model.
  5. Reinstall the spark plug and torque to the manufacturer’s specification (typically around 15-20 lb-ft).

3. Test and Replace Ignition Coil

• Sub-steps:
  1. Disconnect the ignition coil connector for cylinder 2.
  2. Remove the ignition coil and check for cracks or damage.
  3. If necessary, replace the ignition coil with a new one compatible with your vehicle.
  4. Reconnect the ignition coil connector.

4. Check and Replace Fuel Injector

• Sub-steps:
  1. Locate the fuel injector for cylinder 2.
  2. Disconnect the fuel injector connector.
  3. Remove the fuel injector from the rail, taking care to avoid damage to the seals.
  4. Install a new fuel injector ensuring it is properly seated.
  5. Reconnect the fuel injector connector.

5. Final Assembly

• Reinstall any components removed for access.
• Reconnect the battery.
• Start the engine and allow it to idle.