Volkswagen Golf Seventh Generation (2013-2020) P0302 code how to fix

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Park the vehicle on a level surface and engage the parking brake.
• Disconnect the battery to avoid electrical shorts.

2. Inspect and Replace Ignition Components

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the engine cover (if applicable) to access ignition components.
• Disconnect the electrical connector from the ignition coil for cylinder 2.
• Remove the ignition coil using the socket set.
• Inspect the spark plug in cylinder 2. If it appears worn or fouled, replace it.
  • Sub-steps:
    • Use a torque wrench to install the new spark plug to the manufacturer's specification (typically around 20 Nm).
• Reinstall the ignition coil, ensuring it is seated properly.
• Reconnect the ignition coil electrical connector.

3. Check and Replace Fuel Injector (if necessary)

• Tools Required: Fuel injector puller, O-ring lubricant, socket set.
• Disconnect the fuel injector connector for cylinder 2.
• Relieve fuel pressure from the fuel system by removing the fuel pump fuse and running the engine until it stalls.
• Remove the fuel rail (if necessary) to access the fuel injector.
• Extract the fuel injector for cylinder 2 and inspect for dirt or clogs.
• Replace with a new fuel injector if issues are found.
  • Sub-steps:
    • Lubricate the O-rings of the new injector with engine oil.
    • Reinstall the injector and torque any bolts to specifications.

4. Reassemble and Test

• Reinstall any components removed during the process (e.g., fuel rail, engine cover).
• Reconnect the battery.
• Start the engine and check for proper operation.