how to fix P0302 code on my 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 necessary for the repair.
• Ensure the vehicle is parked on a level surface and the engine is turned off and cool.
• Disconnect the battery to avoid electrical shocks.

2. Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover if applicable.
  2. Disconnect the ignition coil connector from cylinder 2.
  3. Unscrew the ignition coil using a socket wrench and remove it from the spark plug.
  4. Using a spark plug socket, remove the spark plug from cylinder 2.
  5. Install the new spark plug, tightening it to the manufacturer's specified torque (usually around 15 lb-ft).
  6. Reinstall the ignition coil and connect the ignition coil connector.

3. Test Ignition Coil

• Sub-steps:
  1. If the ignition coil was found faulty, replace it with a new one.
  2. Reconnect the battery.
  3. Start the engine and monitor for any misfire codes.

4. Inspect/Replace Fuel Injector

• Sub-steps:
  1. Disconnect the fuel injector connector for cylinder 2.
  2. Remove the fuel rail if necessary, taking care to relieve fuel pressure beforehand.
  3. Remove the injector and inspect for clogs or damage.
  4. If faulty, replace with a new fuel injector, ensuring proper seating and O-ring placement.
  5. Reassemble the fuel rail and reconnect the injector.

5. Compression Test

• Sub-steps:
  1. Remove the spark plug from cylinder 2.
  2. Insert a compression gauge into the spark plug hole.
  3. Crank the engine and record the compression reading.
  4. Compare to specifications (typically 120-180 psi).
  5. If low, further diagnosis of engine internals may be needed.