why does my Skoda Octavia's check engine light keep flashing

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the battery to avoid electrical hazards.

2. Scan for Error Codes

• Use an OBD-II scanner to retrieve and document any fault codes.
• Research the codes to identify the specific issues that need addressing.

3. Inspect Ignition System

• Tools Required: Socket set, torque wrench.
• Remove the engine cover if applicable.
• Check spark plugs for wear or fouling; replace if necessary.
• Measure the resistance of ignition coils using a multimeter; replace faulty coils.

4. Check for Vacuum Leaks

• Visually inspect all vacuum hoses for cracks or disconnections.
• Use a smoke machine or carburetor cleaner to detect leaks around intake manifold gaskets.
• Replace any damaged hoses or gaskets as needed.

5. Examine Fuel System

• Tools Required: Fuel pressure gauge.
• Connect the fuel pressure gauge to the fuel rail and turn on the ignition without starting the engine to check pressure.
• Replace the fuel filter if pressure is low and inspect the fuel pump for operation.

6. Assess Exhaust System

• Inspect the exhaust system for any visible damage or blockages.
• Check the catalytic converter for signs of failure, such as rattling noises or discoloration.
• Replace any damaged components as necessary.