my Renault Clio V's engine light is flashing, is it serious?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and safely secured.
• Disconnect the battery to avoid electrical shorts.

2. Diagnose Fault Codes

• Connect the OBD-II scanner to the vehicle's diagnostic port.
• Turn the ignition to the "ON" position without starting the engine.
• Read and record any fault codes displayed on the scanner.

3. Inspect and Replace Faulty Components

• Ignition System:

  • Remove spark plugs using a socket wrench.
  • Inspect for wear or damage; replace if necessary (use OEM or equivalent).
  • Check ignition coils for proper function; replace if any are faulty.

• Fuel System:

  • Inspect fuel lines for leaks or cracks; replace damaged sections.
  • Replace the fuel filter if clogged or dirty.
  • Check fuel pressure using a fuel pressure gauge; adjust as necessary.

4. Exhaust System Inspection

• Visually inspect the exhaust system for leaks or blockages.
• If any components (like the catalytic converter) are damaged, replace them as needed.

5. Test and Clear Codes

• Reconnect the battery and start the engine.
• Use the OBD-II scanner to clear any fault codes.
• Monitor the engine light to see if it returns.