how to fix the engine misfire in my Skoda Octavia NFL (2020-Present) showing code P0301?

Solution

1. Preparation

• Gather tools and parts before starting the repair.
• Disconnect the battery to ensure safety while working on electrical components.

2. Replace Spark Plug

• Tools Required: Socket set, spark plug socket, torque wrench
• Remove ignition coil by unscrewing the retaining bolts and disconnecting the electrical connector.
• Remove the old spark plug using a spark plug socket.
• Inspect the spark plug for wear; if it shows signs of damage or excessive wear, replace it.
• Install a new spark plug, tightening it to the manufacturer’s specified torque (usually around 20 Nm).
• Reattach the ignition coil and ensure it is secured and connected.

3. Inspect and Replace Ignition Coil (if necessary)

• If the ignition coil shows signs of damage or if misfire persists after spark plug replacement, replace the ignition coil.
• Tools Required: Socket set, torque wrench
• Remove the ignition coil as described in the previous step.
• Install the new ignition coil, securing it with bolts to the manufacturer's specified torque.
• Reconnect the electrical connector.

4. Inspect and Clean Fuel Injector (if necessary)

• If issues persist, check the fuel injector.
• Tools Required: Fuel injector cleaning kit (if cleaning), or replace the injector.
• Disconnect the fuel line and electrical connector from the fuel injector.
• If cleaning, follow the instructions for your fuel injector cleaning kit. If replacing, install a new fuel injector, ensuring it is seated properly.
• Reconnect the fuel line and electrical connector securely.

5. Final Checks

• Reconnect the battery and clear any diagnostic codes using the OBD-II scanner.
• Start the engine and check for any new codes or misfires.