how to fix P0302 code in Volkswagen Golf MK6 (2009-2014)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface.
• Disconnect the battery negative terminal to prevent electrical shock.

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.
• Use a spark plug socket to remove the spark plug from cylinder 2.
• Install a new spark plug, ensuring it is gapped correctly (typically 0.028 inches for most Volkswagen models).
• Torque the spark plug to the manufacturer's specification (usually around 22 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 diagnostics, replace it.
• Remove the old ignition coil as described in Step 2.
• Install the new ignition coil and torque it to manufacturer specifications (usually around 7 lb-ft).
• Reconnect the coil connector.

4. Check Fuel Injector

• Tools Required: Fuel injector puller or socket set.
• Disconnect the fuel injector connector for cylinder 2.
• Remove the fuel rail if necessary to access the injector.
• Pull out the fuel injector and inspect for clogs or damage.
• If defective, replace with a new injector and ensure proper seating.
• Reinstall the fuel rail and reconnect all connectors.

5. Compression Test

• Tools Required: Compression tester.
• Remove spark plugs from all cylinders.
• Insert the compression tester into cylinder 2.
• Crank the engine to take a reading and compare it to manufacturer specifications (typically between 150-200 psi).
• If the compression is low, further diagnosis may be needed to check for valve or piston issues.