how to fix P0302 misfire code in Volkswagen Golf MK7.5 (2020-Present)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the battery to ensure safety.
• Allow the engine to cool down before starting work.

2. Remove Ignition Coil and Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket, dielectric grease.
• Remove the engine cover if necessary.
• Disconnect the electrical connector from the ignition coil on cylinder 2.
• Remove the ignition coil bolts using the socket set and pull the coil out.
• Use the spark plug socket to remove the spark plug from cylinder 2.

3. Inspect and Replace Components

• Inspect the spark plug for wear, carbon buildup, or damage. Replace if worn.
• Check the ignition coil for cracks or signs of arcing. If defective, replace with a new coil.
• Apply dielectric grease to the ignition coil connector to ensure a good electrical connection.

4. Check and Replace Fuel Injector

• Tools Required: Noid light or multimeter, fuel injector puller (if necessary).
• If the injector is faulty, remove it by disconnecting the electrical connector and unscrewing any retaining clips or bolts.
• Install a new fuel injector, ensuring it seats properly in the rail.
• Reconnect the electrical connector.

5. Reassemble and Reconnect

• Reinstall the spark plug, tightening it to the manufacturer's specified torque (usually around 15-20 lb-ft).
• Reinstall the ignition coil and secure it with bolts.
• Reconnect the battery and ensure all components are securely fastened.