what does engine code P0302 mean for my Volvo XC60 First Generation (2008-2017)?

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 needed for the repair.
• Disconnect the negative battery terminal to prevent electrical shorts during repairs.

2. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover (if applicable).
  2. Disconnect the ignition coil connector for cylinder 2.
  3. Remove the ignition coil by unbolting it and pulling it out of the spark plug well.
  4. Extract the spark plug using a spark plug socket and ratchet.
  5. Inspect the spark plug for signs of wear, fouling, or damage. Replace if necessary.
  6. Install a new spark plug with the correct gap (typically 0.028-0.032 inches for most models).
  7. Reinstall the ignition coil and reconnect the connector.

3. Check and Replace Ignition Coil

• Sub-steps:
  1. If the spark plug is fine, test the ignition coil with an ohmmeter to ensure it is functioning correctly.
  2. If faulty, replace the ignition coil with a new one specifically designed for the XC60.
  3. Reconnect the ignition coil connector.

4. Test Fuel Injector

• Sub-steps:
  1. Remove the fuel injector connector for cylinder 2.
  2. Use a multimeter to check for resistance; if it is out of specification, replace the injector.
  3. If the injector is functional, ensure that the fuel rail is supplying adequate fuel pressure.
  4. Reconnect the fuel injector.

5. Reassemble and Clear Codes

• Sub-steps:
  1. Reinstall any components removed for access.
  2. Reconnect the negative battery terminal.
  3. Use an OBD-II scanner to clear the P0302 code from the ECM.