my Volkswagen Golf has a check engine light with code P0302 how to fix it

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative terminal of the battery to prevent any electrical issues.
• Allow the engine to cool before beginning work.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 2 by unscrewing any retaining bolts and unplugging the electrical connector.
• Extract the spark plug using a spark plug socket and ratchet.
• Inspect the spark plug for wear or damage. Replace it with a new spark plug if necessary (use OEM specifications).
• Reinstall the ignition coil, ensuring it is securely connected.

3. Examine and Replace Ignition Coil

• If the spark plug is in good condition, test the ignition coil for proper operation using a multimeter.
• If faulty, remove the ignition coil and replace it with a new one (ensure it's specific to the Golf model).
• Reconnect the electrical connector and secure it in place.

4. Check Fuel Injector

• Disconnect the fuel injector connector for cylinder 2.
• Use a multimeter to test the resistance of the fuel injector; compare it to specifications.
• If the injector is defective, replace it with a new one, ensuring proper seating and connection.

5. Reassemble and Test

• Reconnect the negative battery terminal.
• Clear any error codes using the OBD-II scanner.
• Start the engine and allow it to reach operating temperature.