how to fix my Volvo XC60 when it shows code P0302

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 repairs.
• Disconnect the battery to ensure safety while working on electrical components.

2. Remove Ignition Components

• Sub-steps:
  1. Remove the engine cover (if applicable) using a socket set.
  2. Disconnect the electrical connector from the ignition coil for cylinder 2.
  3. Remove the ignition coil from cylinder 2 by unbolting it.

3. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the spark plug from cylinder 2 using a spark plug socket.
  2. Inspect the spark plug for signs of wear or fouling. Replace if necessary.
  3. Gap the new spark plug according to manufacturer specifications (typically 0.028-0.032 inches).
  4. Install the new spark plug and torque it to the specified value (usually around 13 lb-ft).

4. Test and Replace Fuel Injector (if needed)

• Sub-steps:
  1. Disconnect the fuel injector connector for cylinder 2.
  2. Remove the fuel rail (if required) to access the injector.
  3. Test the injector with a multimeter for resistance (typically around 12-16 ohms).
  4. Replace the fuel injector if it does not meet specifications and reinstall the fuel rail.

5. Reinstall Components

• Sub-steps:
  1. Reinstall the ignition coil for cylinder 2 and reconnect the electrical connector.
  2. Reinstall the engine cover if it was removed.
  3. Reconnect the battery.