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

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the battery to prevent electrical shorts.
• Allow the engine to cool down.

2. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover (if applicable) using a socket set.
  2. Remove the ignition coil from cylinder 1 by unscrewing the retaining bolt and disconnecting the electrical connector.
  3. Remove the spark plug using a spark plug socket.
  4. Inspect the spark plug for wear, carbon build-up, or damage; replace it if necessary.
  5. Install the new spark plug by hand to avoid cross-threading, then torque it to manufacturer specifications (typically 20-30 Nm).
  6. Reinstall the ignition coil and reconnect the electrical connector.

3. Inspect and Replace Fuel Injector (if necessary)

• Sub-steps:
  1. Disconnect the fuel pump fuse and start the engine to relieve fuel pressure, then turn off the engine.
  2. Disconnect the electrical connector from the fuel injector for cylinder 1.
  3. Remove the fuel rail bolts and gently lift the fuel rail to access the injector.
  4. Remove the old injector and replace it with a new one, ensuring the O-ring is lubricated with clean engine oil.
  5. Reattach the fuel rail and reconnect the electrical connector.

4. Check and Repair Vacuum Leaks

• Sub-steps:
  1. Inspect all vacuum hoses connected to the intake manifold for cracks or disconnections.
  2. Use a smoke machine or carburetor cleaner to identify leaks while the engine is running.
  3. Replace any damaged hoses or reattach loose connections.