how to fix P0301 misfire code in Skoda Octavia NFL (2020-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent electrical shorts.
• Ensure the engine is cool before starting work.

2. Replace Spark Plug

• Remove the engine cover (if applicable) using a socket set.
• Disconnect the ignition coil connector for cylinder 1.
• Remove the ignition coil using a socket wrench.
• Remove the spark plug with a spark plug socket.
• Inspect and replace with a new spark plug, ensuring it has the correct gap as per manufacturer specifications (usually around 0.7-0.8 mm for many engines).
• Reinstall the ignition coil and reconnect the connector.

3. Test and Replace Ignition Coil (if necessary)

• If the spark plug was in good condition, proceed to check the ignition coil.
• Use a multimeter to test the primary and secondary resistance of the ignition coil (refer to the service manual for specific resistance values).
• If the coil is faulty, replace it with a new one.
• Reinstall the ignition coil and ensure it is seated properly.

4. Inspect and Replace Fuel Injector (if necessary)

• If the ignition coil is functional, check the fuel injector for cylinder 1.
• Remove the fuel rail (ensure to relieve fuel pressure prior to removal).
• Test the fuel injector with a multimeter to check for proper operation.
• If faulty, replace the fuel injector with a new one, applying new O-rings and ensuring a proper seal.

5. Reassemble and Reset Codes

• Reinstall the fuel rail and any components removed during the inspection.
• Reconnect the battery.
• Use the OBD-II scanner to clear the P0301 code and any other related codes.