how to fix P0302 code on my Volkswagen Golf MK6 (2009-2014)?

Solution

1. Preparation

• Gather required tools and parts.
• Disconnect the battery to prevent any electrical shorts.
• Ensure the engine is cool before starting work.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, spark plug socket, torque wrench.
• Sub-steps:
  1. Remove the engine cover if applicable.
  2. Disconnect the ignition coil connector for cylinder 2.
  3. Remove the ignition coil from cylinder 2.
  4. Unscrew and remove the spark plug from cylinder 2 using a spark plug socket.
  5. Inspect the spark plug for wear or damage. If worn, replace it with a new spark plug (refer to the manufacturer’s specifications for the correct type).
  6. Torque the new spark plug to the manufacturer’s specifications (usually around 15-25 ft-lbs).

3. Inspect and Replace Ignition Coil

• Tools Required: Socket set, torque wrench.
• Sub-steps:
  1. Check the ignition coil for any signs of damage or cracks.
  2. If damaged, replace the ignition coil with a new one for cylinder 2.
  3. Reinstall the ignition coil and reconnect the electrical connector.
  4. Torque the ignition coil mounting bolts to the specified value (usually around 89-108 in-lbs).

4. Check and Replace Fuel Injector

• Tools Required: Fuel injector removal tool (if necessary), socket set.
• Sub-steps:
  1. Relieve the fuel system pressure by removing the fuel pump fuse and starting the engine until it stalls.
  2. Disconnect the fuel injector connector for cylinder 2.
  3. Remove the fuel rail if necessary, then remove the fuel injector from cylinder 2.
  4. Inspect the injector for clogs or damage. If faulty, replace with a new fuel injector.
  5. Reinstall the injector and fuel rail, ensuring seals are properly seated.

5. Reconnect Battery and Clear Codes

• Reconnect the battery terminals.
• Use the OBD-II scanner to clear the P0302 code and any other stored codes.