how to fix P0302 misfire code on my Volvo XC60 536 (2017-Present)

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: OBD-II scanner, socket set, torque wrench, compression gauge, multimeter, and basic hand tools.
• Disconnect the vehicle battery to ensure safety while working on electrical components.

2. Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover, if applicable, to access the spark plug.
  2. Disconnect the ignition coil connector for cylinder 2.
  3. Remove the ignition coil by unscrewing the retaining bolts.
  4. Use a spark plug socket to remove the old spark plug.
  5. Inspect the spark plug for wear; replace it with a new one (ensure it matches OEM specifications).
  6. Torque the new spark plug to the manufacturer’s specifications (usually around 15 ft-lbs).
  7. Reinstall the ignition coil and reconnect the connector.

3. Replace Ignition Coil

• Sub-steps:
  1. If the spark plug replacement did not resolve the issue, remove the ignition coil from cylinder 2.
  2. Install a new ignition coil ensuring it is compatible with the Volvo XC60.
  3. Reconnect the ignition coil connector and secure it in place.

4. Test Fuel Injector

• Sub-steps:
  1. If misfire persists, check the fuel injector for cylinder 2.
  2. Disconnect the fuel injector connector and test it with a multimeter for proper resistance (if applicable).
  3. If the injector is faulty, replace it with a new one.
  4. Reconnect all connectors and verify proper operation.