how to resolve P0302 misfire code on my Volkswagen Golf MK7.5 (2020-Present)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a level surface and the ignition is off.
• Disconnect the battery to prevent electrical shorts.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the engine cover if applicable.
• Disconnect the ignition coil connector for cylinder 2.
• Remove the ignition coil by unscrewing the retaining bolts and pulling it straight out.
• Remove the old spark plug using a spark plug socket.
• Inspect the new spark plug and ensure it is gapped correctly as per manufacturer specifications.
• Install the new spark plug and torque it to the manufacturer’s specifications (typically around 15-20 lb-ft).
• Reinstall the ignition coil and reconnect the connector.

3. Replace Ignition Coil (if necessary)

• Tools Required: Socket set, torque wrench.
• If the ignition coil was found faulty during inspection, remove it as described in the previous step.
• Install a new ignition coil in place of the old one and torque to specifications (check manufacturer guidelines).
• Reconnect the coil connector.

4. Fuel Injector Inspection or Replacement

• Tools Required: Fuel injector puller (if needed), socket set.
• If the fuel injector was found faulty, disconnect the fuel line, and remove any brackets or components obstructing access.
• Carefully remove the fuel injector from the rail.
• Install the new fuel injector, ensuring proper seating and connection.
• Reconnect the fuel line and check for leaks.

5. Reassemble and Test

• Reattach the engine cover if removed.
• Reconnect the battery.
• Start the engine and allow it to reach operating temperature, then check for codes again with the OBD-II scanner.