how to fix P0301 cylinder 1 misfire code in Skoda Octavia NFL (2020-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to avoid electrical shorts.
• Allow the engine to cool completely before starting any work.

2. Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench.
• Remove the ignition coil cover (if applicable).
• Disconnect the ignition coil connector.
• Remove the ignition coil from cylinder 1.
• Use a spark plug socket to remove the old spark plug from cylinder 1.
• Inspect the spark plug gap; it should meet manufacturer specifications (typically 0.7-0.8 mm).
• Install a new spark plug, tightening it to the manufacturer-specified torque (usually around 20 Nm).
• Reinstall the ignition coil and reconnect the connector.

3. Test/Replace Ignition Coil

• Tools Required: Multimeter or ignition coil tester.
• Check the ignition coil for resistance using a multimeter (consult the service manual for specific resistance values).
• If faulty, remove the defective ignition coil from cylinder 1 and replace it with a new one.
• Reconnect the ignition coil connector.

4. Inspect Fuel Injector

• Tools Required: Fuel injector cleaning kit or multimeter.
• Disconnect the fuel injector connector for cylinder 1.
• Use a multimeter to check the resistance of the injector (refer to specifications).
• If the injector is faulty, remove it and replace it with a new one, ensuring proper seating and connection.

5. Compression Test

• Tools Required: Compression tester.
• Remove the spark plug from cylinder 1.
• Insert the compression tester into the cylinder and crank the engine.
• Record the compression reading; it should meet manufacturer specifications (usually around 140-200 psi).
• If the reading is low, further investigation into valve seals or piston rings may be necessary.