how to fix P0302 misfire code in Volkswagen Golf Eighth Generation (2020-present)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative battery terminal to prevent electrical shocks.
• Allow the engine to cool before starting work.

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 bolt securing the ignition coil and gently pull it out.
  4. Remove the spark plug using a spark plug socket and ratchet.
  5. Inspect the spark plug for signs of wear, carbon buildup, or damage.
  6. Replace with a new spark plug that meets manufacturer specifications (typically, a heat range of 6-7).
  7. Reinstall the spark plug and torque to the manufacturer's specification (usually around 20 Nm).
  8. Reinstall the ignition coil and reconnect the connector.

3. Inspect and Replace Ignition Coil

• Sub-steps:
  1. If the spark plug is fine, remove the ignition coil from cylinder 2.
  2. Inspect the ignition coil for cracks or damage.
  3. Replace the ignition coil with a new one if necessary (ensure it matches OEM specifications).
  4. Reinstall the ignition coil and make sure it clicks into place securely.

4. Inspect and Replace Fuel Injector (if necessary)

• Sub-steps:
  1. Disconnect the fuel injector connector for cylinder 2.
  2. Remove the retaining clips and the fuel injector.
  3. Inspect the fuel injector for clogs or leaks.
  4. Replace with a new fuel injector if it is found faulty.
  5. Reinstall the injector, ensuring all connections are secure.