how to fix P0302 misfire code in Volkswagen Tiguan First Generation (2007-2018)

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative battery terminal.
• Allow the engine to cool before proceeding.

2. Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench.
• Remove the ignition coil from cylinder 2 by unscrewing the retaining bolts.
• Pull the ignition coil straight out of the spark plug hole.
• Remove the old spark plug using a spark plug socket.
• Inspect the spark plug for wear; replace if necessary.
• Install the new spark plug, tightening to the manufacturer's specified torque (usually around 22 lb-ft).
• Reinstall the ignition coil and secure it with bolts.

3. Replace Ignition Coil (if necessary)

• Tools Required: Ratchet, socket set.
• If the ignition coil showed signs of failure, remove the old coil from cylinder 2.
• Install the new ignition coil, ensuring proper seating.
• Reconnect the electrical connector to the ignition coil.

4. Inspect and Replace Fuel Injector (if necessary)

• Tools Required: Fuel injector puller, socket set.
• Disconnect the fuel injector electrical connector and fuel line (be cautious of fuel spillage).
• Remove the fuel injector from cylinder 2 using a fuel injector puller.
• Inspect the injector for clogs; replace if defective.
• Install the new fuel injector, ensuring a proper seal and reconnect the fuel line.

5. Perform Final Checks

• Reconnect the negative battery terminal.
• Start the engine and let it idle to ensure the repair is successful.