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

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the negative terminal of the battery to prevent electrical shock.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Compression tester
• Fuel injector cleaning kit
• Multimeter (for ignition coil testing)

2. Replace Spark Plug

• Remove the ignition coil by unscrewing the bolts and gently pulling it off the spark plug.
• Remove the spark plug using a spark plug socket and ratchet.
• Inspect the old spark plug for signs of wear; replace it if necessary.
• Gap the new spark plug according to manufacturer specifications (typically around 0.7-0.8 mm).
• Install the new spark plug and torque it to the manufacturer's specification (typically around 25 Nm).
• Reattach the ignition coil.

3. Test/Replace Ignition Coil

• Use a multimeter to test the primary and secondary resistance of the ignition coil according to the specifications in the service manual.
• If the coil is faulty, replace it with a new one.
• Reinstall the ignition coil and ensure it is correctly seated.

4. Inspect/Replace Fuel Injector

• Disconnect the fuel injector connector and the fuel line (ensure to relieve fuel pressure first).
• Remove the fuel injector from cylinder 1.
• Inspect for clogs or damage. If necessary, clean or replace the injector.
• Reinstall the injector, ensuring it is properly seated, and reconnect the fuel line and electrical connector.

5. Verify Compression

• Attach the compression tester to the spark plug hole of cylinder 1.
• Crank the engine and record the compression reading. It should be within the manufacturer's specified range (typically around 150-200 psi).
• If compression is low, further inspection of piston rings or valves may be required.