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

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 terminal of the battery.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket
• Sub-steps:
  1. Remove the engine cover if necessary.
  2. Disconnect the ignition coil connector for cylinder 1.
  3. Remove the ignition coil from cylinder 1.
  4. Use the spark plug socket to remove the spark plug.
  5. Inspect the spark plug for wear; replace it if it shows signs of damage or significant wear.
  6. Install the new spark plug using the torque specifications (typically 20 Nm for most spark plugs).
  7. Reinstall the ignition coil and reconnect the connector.

3. Inspect and Replace Ignition Coil

• Tools Required: Socket set, torque wrench
• Sub-steps:
  1. If the spark plug was not the issue, remove the ignition coil again.
  2. Inspect the ignition coil for cracks or carbon tracking.
  3. If defective, replace the ignition coil with a new one.
  4. Reinstall the ignition coil and reconnect the connector.
  5. Ensure all connections are secure.

4. Check Fuel Injector

• Tools Required: Fuel injector cleaner, multimeter
• Sub-steps:
  1. Disconnect the fuel injector connector for cylinder 1.
  2. Using the multimeter, check the resistance of the injector (should typically be around 12-16 ohms).
  3. If the injector is out of specifications, replace it.
  4. Clean the injector using a fuel injector cleaner to ensure proper fuel delivery.
  5. Reconnect the injector connector.

5. Compression Test

• Tools Required: Compression tester
• Sub-steps:
  1. Remove all spark plugs to ensure accurate compression readings.
  2. Insert the compression tester into the cylinder 1 spark plug hole.
  3. Crank the engine and record the compression reading (should be within manufacturer specifications).
  4. If the compression is low, further investigation into the engine internals may be required.