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

Solution

1. Preparation

• Gather tools and parts required for repair.
• Disconnect the negative terminal of the battery to prevent electrical shorts.
• Allow the engine to cool down before working on it.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket
• Remove the engine cover if necessary.
• Disconnect the ignition coil connector and remove the ignition coil from cylinder 2.
• Use the spark plug socket to remove the spark plug from cylinder 2.
• Inspect the spark plug for wear or carbon buildup.
• Install a new spark plug, ensuring it is gapped according to manufacturer specifications (typically around 0.028-0.032 inches).
• Torque the spark plug to the manufacturer’s specification (usually around 15-20 lb-ft).
• Reinstall the ignition coil and reconnect its connector.

3. Replace Ignition Coil

• If the spark plug is in good condition, inspect and replace the ignition coil.
• Remove the ignition coil from cylinder 2 and install a new ignition coil.
• Reconnect the ignition coil connector.

4. Test and Replace Fuel Injector

• If the issue persists, check the fuel injector for cylinder 2.
• Disconnect the fuel injector connector and remove the fuel injector.
• Use a noid light to check for proper electrical signal to the injector.
• If the injector is faulty, replace it with a new one and ensure it seats properly.