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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety while working on electrical components.
• Allow the engine to cool if it was recently running.

2. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the ignition coil from cylinder 1 using a socket wrench.
  2. Remove the spark plug using a spark plug socket.
  3. Inspect the spark plug for wear or carbon buildup. Replace if necessary.
  4. Gap the new spark plug according to manufacturer's specifications (typically around 0.8-1.0mm for many models).
  5. Install the new spark plug and torque it to the manufacturer’s specifications (usually around 20 Nm).
  6. Reinstall the ignition coil on top of the spark plug.

3. Test and Replace Ignition Coil

• Sub-steps:
  1. Disconnect the ignition coil connector.
  2. Test the ignition coil's primary and secondary resistance with a multimeter (refer to specifications in the service manual).
  3. Replace the ignition coil if it is out of specifications.
  4. Reconnect the ignition coil and ensure a secure fit.

4. Inspect and Test Fuel Injector

• Sub-steps:
  1. Disconnect the fuel injector connector for cylinder 1.
  2. Use a multimeter to test the injector's resistance (check service manual for specs).
  3. If resistance is out of range, replace the fuel injector.
  4. If functional, reconnect the fuel injector.

5. Perform Compression Test

• Sub-steps:
  1. Remove the spark plug from cylinder 1.
  2. Insert a compression gauge into the spark plug hole.
  3. Crank the engine and record the compression reading.
  4. Compare the reading with manufacturer specifications (usually around 150-200 psi).
  5. If compression is low, further diagnosis on the engine internals may be needed.

6. Check for Vacuum Leaks

• Sub-steps:
  1. Visually inspect all vacuum hoses for cracks or disconnections.
  2. Use a smoke machine or carb cleaner to check for leaks around the intake manifold or throttle body.
  3. Repair or replace any damaged hoses or gaskets.