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

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, compression tester, multimeter, fuel injector cleaner.
• Safety Warnings: Disconnect the battery before starting any electrical work. Allow the engine to cool before performing inspections.

2. Replace Spark Plug and Ignition Coil

• Sub-steps:
  1. Remove the engine cover (if applicable) using a socket set.
  2. Disconnect the electrical connector from the ignition coil on cylinder 1.
  3. Remove the ignition coil using the socket set.
  4. Remove the spark plug using a spark plug socket.
  5. Inspect the old spark plug for wear; replace it if necessary.
  6. Install the new spark plug, tightening it to the manufacturer’s specified torque (typically around 15-20 lb-ft).
  7. Install the new ignition coil and reconnect the electrical connector.

3. Check and Clean Fuel Injector

• Sub-steps:
  1. Disconnect the fuel injector connector for cylinder 1.
  2. Remove the fuel injector using the appropriate tools, ensuring to relieve fuel pressure first.
  3. Clean the injector with a fuel injector cleaner.
  4. Reinstall the cleaned or new fuel injector, ensuring proper seating and connection.
  5. Reconnect the fuel injector electrical connector.

4. Conduct Compression Test

• Sub-steps:
  1. Remove the spark plug from cylinder 1.
  2. Insert the compression tester into the spark plug hole.
  3. Crank the engine a few times to get a reading, noting the compression value.
  4. Compare the value to manufacturer specifications (usually around 150-200 psi).
  5. If compression is low, consider further inspection of the valves, piston rings, or head gasket.