how to fix P0302 misfire code in Skoda Octavia NFL (2020-Present)

Learn how to diagnose and fix P0302 cylinder 2 misfire in Skoda Octavia NFL. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the negative battery terminal to ensure safety while working on the electrical system.

2. Inspect and Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench.
• Remove the ignition coil from cylinder 2 by disconnecting the electrical connector and unscrewing the retaining bolts.
• Extract the spark plug using a spark plug socket. Inspect for wear or fouling.
• If the spark plug is damaged, replace it with a new one. Torque the new spark plug to the manufacturer's specifications (typically around 20 Nm).
• Reinstall the ignition coil, ensuring it is properly seated and the connector is secure.

3. Check and Replace Ignition Coil

• If the spark plug inspection does not reveal issues, test the ignition coil for cylinder 2 using a multimeter.
• If it is faulty, replace it with a new ignition coil.
• Tools Required: Multimeter, socket set.
• Ensure the new ignition coil is installed correctly and reconnect the electrical connector.

4. Inspect and Test Fuel Injector

• Check the fuel injector for cylinder 2 for proper operation using a fuel injector tester.
• If the injector is not functioning correctly, replace it with a new one.
• Tools Required: Fuel injector removal tool.
• Ensure proper installation and reconnection of the fuel line.

5. Perform Compression Test

• Use a compression tester to check cylinder 2's compression.
• If compression is low, further diagnostics may be required to identify the cause (e.g., valve damage or head gasket failure).
• Tools Required: Compression tester.
• Follow the manufacturer's guidelines for acceptable compression values.