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

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the battery to ensure safety during repairs.
• Gather tools: socket set, torque wrench, multimeter, fuel injector cleaning kit.

2. Replace Spark Plug and Ignition Coil

1. Remove Engine Cover (if applicable)
   • Use a socket set to remove any screws or bolts securing the engine cover.
2. Access Ignition Coil and Spark Plug
   • Disconnect the electrical connector from the ignition coil.
   • Remove the ignition coil by unscrewing any retaining bolts.
3. Replace Spark Plug
   • Remove the spark plug using a spark plug socket.
   • Inspect the old spark plug for wear and replace it with a new one, ensuring it is gapped according to manufacturer specifications.
4. Install New Ignition Coil
   • Place the new ignition coil in position and secure it with the retaining bolts.
   • Reconnect the electrical connector to the ignition coil.

3. Clean or Replace Fuel Injector

1. Access Fuel Injector
   • Remove the intake manifold if required to access the fuel injector.
   • Disconnect the fuel line (use caution, as fuel may spill).
2. Inspect Fuel Injector
   • Check for clogs or leaks. If clogged, use a fuel injector cleaning kit to clean it.
   • If the injector is faulty, replace it with a new one.
3. Reassemble Components
   • Reconnect the fuel line securely and reinstall the intake manifold if removed.

4. Perform Compression Test

1. Remove Spark Plug
   • Make sure the spark plug is removed from cylinder 1.
2. Use Compression Tester
   • Screw the compression tester into the spark plug hole and crank the engine to obtain a reading.
   • Compare the reading to manufacturer specifications; if low, further engine diagnostics may be needed.

5. Clear Codes and Test Drive

• Reconnect the battery and use the OBD-II scanner to clear the P0301 code.
• Test drive the vehicle to ensure that the misfire is resolved.