how to fix engine code P0302 on my Skoda Octavia NFL (2020-Present)

Learn how to diagnose and fix P0302 cylinder 2 misfire in Skoda Octavia NFL. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug gap tool.
• Remove the ignition coil from cylinder 2.
• Extract the spark plug and inspect it for signs of wear (e.g., carbon buildup, damage).
• If damaged, replace with a new spark plug, ensuring the gap is set to the manufacturer's specifications (typically around 0.7-0.8 mm).
• Reinstall the ignition coil and securely tighten.

3. Inspect and Replace Ignition Coil

• If the spark plug is fine, test the ignition coil for proper operation using a multimeter.
• If faulty, remove the ignition coil and replace it with a new one.
• Reconnect the electrical connectors and ensure they are secure.

4. Test Fuel Injector

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

5. Check for Vacuum Leaks

• Inspect hoses and gaskets around the intake manifold for cracks or disconnections.
• Use a smoke machine or carb cleaner to identify leaks; repair or replace any damaged components.

6. Verify Compression

• Use a compression gauge to measure the compression in cylinder 2.
• If compression is low, further investigation into valve seating or piston health may be necessary.