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

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface with the engine turned off and cooled down.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 1:
  • Unplug the electrical connector.
  • Remove bolts securing the coil using a socket set.
• Remove the spark plug using a spark plug socket:
  • Inspect the spark plug for wear, carbon build-up, or damage.
  • If damaged, replace with a new spark plug (refer to manufacturer specifications for type).
• Reinstall the new spark plug and torque to the manufacturer’s specification (commonly around 20 Nm).

3. Check and Replace Ignition Coil

• Inspect the ignition coil for signs of wear or cracks.
• If faulty, replace the ignition coil:
  • Install the new ignition coil over the spark plug and secure it with bolts.
  • Reconnect the electrical connector.

4. Inspect Fuel Injector

• Remove and inspect the fuel injector for cylinder 1:
  • Disconnect the fuel line and electrical connector carefully.
  • Remove mounting bolts and extract the injector.
• Clean the injector or replace it if clogged or damaged, ensuring proper seating during reinstallation.

5. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the fault codes.