Skoda Octavia NFL (2020-Present) check engine light keeps coming on, what should I do

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the vehicle’s battery to ensure safety.
• Ensure the work area is clean and free from hazards.

2. Retrieve and Address Error Codes

• Use the OBD-II scanner to retrieve the error codes.
• Document the codes for further analysis.
• Clear the codes and take the vehicle for a test drive to see if they return.

3. Inspect and Replace Ignition Components

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the ignition coil cover and inspect the ignition coils.
  • If damaged, replace them.
• Remove and inspect the spark plugs, replacing them if they show signs of wear (cracks, deposits).
• Reassemble components, ensuring proper torque specifications are met (refer to the vehicle manual).

4. Check Fuel System

• Tools Required: Fuel pressure gauge, basic hand tools.
• Locate the fuel rail and connect the fuel pressure gauge.
• Turn the ignition to the “ON” position (do not start the engine) and check the fuel pressure reading.
  • If below specifications, consider replacing the fuel pump.
• Inspect fuel injectors for leaks and clean if necessary or replace if faulty.

5. Inspect Air Intake and Exhaust Systems

• Tools Required: Basic hand tools, flashlight.
• Check the air filter for cleanliness and replace if clogged.
• Inspect the intake hoses for cracks or loose connections.
• Examine the exhaust system for leaks, especially around the catalytic converter.
• Repair or replace any damaged components.