how to fix P0302 code on my Volkswagen Golf MK7 (2015-2019)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety.
• Allow the engine to cool down before starting work.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug gap tool.
• Remove the ignition coil cover if applicable.
• Disconnect the ignition coil connector and remove the ignition coil from cylinder 2.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for signs of wear or damage. Replace if necessary.
• Install the new spark plug, ensuring it is gapped correctly (check manufacturer specifications).
• Reinstall the ignition coil and reconnect the connector.

3. Check and Replace Ignition Coil

• If the spark plug is in good condition, test the ignition coil.
• Tools Required: Multimeter.
• Use a multimeter to check the resistance of the ignition coil (refer to manufacturer specifications).
• If the ignition coil is faulty, replace it with a new one.
• Reinstall the ignition coil and reconnect the connector.

4. Inspect and Clean Fuel Injector

• Remove the fuel injector for cylinder 2.
• Tools Required: Fuel injector puller (if necessary), cleaning solvent.
• Check the injector for clogs or damage.
• Clean the fuel injector with appropriate cleaning solvent or replace it if necessary.
• Reinstall the fuel injector and ensure it is properly seated.

5. Compression Test

• Conduct a compression test on cylinder 2 to check for internal engine issues.
• Tools Required: Compression tester.
• If compression is low, further diagnostics may be needed to determine if there are issues with valves or piston rings.