what causes the P0302 code in a Volvo XC60 536 (2017-Present) and how to fix it?

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 prevent electrical shorts.
• Allow the engine to cool before working on ignition components.

2. Replace Spark Plug

• Remove the ignition coil from cylinder 2:
  1. Disconnect the electrical connector from the ignition coil.
  2. Remove the bolts securing the ignition coil using a socket set.
  3. Gently pull the ignition coil out of the spark plug well.
• Remove the spark plug:
  1. Use a spark plug socket to unscrew and remove the old spark plug.
  2. Inspect the spark plug for wear (if necessary, replace with an OEM spark plug).
• Install the new spark plug:
  1. Apply anti-seize lubricant to the threads of the new spark plug.
  2. Hand-tighten the new spark plug and then torque it to the manufacturer’s specifications (typically between 13-15 lb-ft).
• Reinstall the ignition coil:
  1. Place the ignition coil back into the spark plug well.
  2. Secure it with the bolts and reconnect the electrical connector.

3. Replace Ignition Coil (if needed)

• If the ignition coil showed signs of failure during inspection:
  1. Remove the faulty ignition coil as described in the previous step.
  2. Install the new ignition coil in the same manner.
• Ensure all connections are secure.

4. Inspect Fuel Injector

• If the spark plug and ignition coil were in good condition:
  1. Remove the fuel injector connector for cylinder 2.
  2. Test the injector using a noid light to verify that it is receiving a signal.
  3. If it is not functioning, replace the fuel injector with a new one.