Skoda Octavia NFL (2020-Present) why is my check engine light flashing

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the vehicle battery to ensure safety while working on electrical components.

2. Address Ignition System Issues

• Sub-step 1: Remove the engine cover (if applicable) using a socket set.
• Sub-step 2: Inspect and replace spark plugs as needed; use the manufacturer’s specified spark plug type and gap.
• Sub-step 3: Test ignition coils using a multimeter for resistance; replace any faulty coils.

3. Check for Vacuum Leaks

• Sub-step 1: Perform a smoke test to identify leaks in vacuum hoses.
• Sub-step 2: Replace any damaged or cracked hoses.

4. Inspect Fuel Delivery System

• Sub-step 1: Remove the fuel injectors using appropriate tools and inspect for clogs or leaks.
• Sub-step 2: Clean or replace fuel injectors as needed.
• Sub-step 3: Check fuel pressure with a fuel pressure gauge; replace the fuel pump if pressure is below specifications.

5. Test Engine Compression

• Sub-step 1: Remove spark plugs to access cylinders.
• Sub-step 2: Use a compression tester to measure the pressure in each cylinder; record the values.
• Sub-step 3: If compression is low, investigate possible causes such as worn piston rings or valves.

6. Inspect Exhaust System

• Sub-step 1: Visually inspect the exhaust for blockages or leaks.
• Sub-step 2: If necessary, remove the exhaust components to clean or replace as needed.