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

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, compression tester, fuel injector cleaner.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shock.

2. Inspect and Replace Spark Plug

• Remove the ignition coil cover if applicable.
• Use the socket set to remove the spark plug from cylinder 1.
• Inspect the spark plug for signs of fouling or wear. Replace if necessary.
• Torque the new spark plug to the manufacturer’s specifications (usually around 20-30 Nm).
• Reinstall the ignition coil and cover.

3. Test and Replace Ignition Coil

• Remove the ignition coil from cylinder 1.
• Test the ignition coil using a multimeter; check for resistance as per manufacturer specifications.
• If defective, replace with a new ignition coil.
• Reinstall the ignition coil and ensure it is securely connected.

4. Compression Test

• Remove the spark plug from cylinder 1.
• Install the compression tester and crank the engine to take a reading.
• Compare the reading with manufacturer specifications. If low, investigate further for potential internal engine issues.

5. Inspect Fuel Injector

• Remove the fuel injector connector for cylinder 1.
• Use a multimeter to check for proper voltage and resistance.
• If the injector is faulty, replace it with a new one.
• Ensure proper seating and connection before reassembling.

6. Check for Vacuum Leaks

• Visually inspect and listen for any hissing sounds around the intake manifold.
• Spray carburetor cleaner around suspected areas while the engine is running to check for RPM changes.
• Repair any identified leaks.