what does the check engine code P0302 mean for my Volkswagen Golf MK7.5 (2020-Present)

Solution

1. Preparation

• Gather tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal.

2. Inspect and Replace Spark Plug

• Remove the engine cover if applicable.
• Unplug the ignition coil connector for cylinder 2.
• Remove the ignition coil using a socket set (typically 10mm).
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for wear or carbon fouling. Replace if necessary.
• Install the new spark plug to the manufacturer's specified torque (usually around 15 ft-lbs).
• Reinstall the ignition coil and reconnect the harness.

3. Check and Replace Ignition Coil

• If the spark plug inspection shows no issues, check the ignition coil for faults.
• If faulty, remove the ignition coil from cylinder 2 as described above.
• Replace with a new ignition coil, ensuring it sits firmly and connects properly to the harness.

4. Test Fuel Injector

• Disconnect the fuel injector connector for cylinder 2.
• Using a noid light, check for injector pulse while cranking the engine. Replace if there is no pulse.
• If the injector is faulty, remove it carefully using a fuel injector removal tool.
• Install a new fuel injector ensuring proper seating and connection.

5. Perform Compression Test

• If misfire persists, perform a compression test on cylinder 2.
• Remove spark plugs from all cylinders for accurate results.
• Insert the compression tester into cylinder 2 and crank the engine.
• Compare results with manufacturer specifications. If low, further diagnostics are needed.