why does my Skoda Octavia's engine light come on after filling gas?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked in a well-ventilated area.
• Disconnect the battery to prevent electrical issues.

2. Inspect and Replace Gas Cap

• Sub-steps:
  • Remove the gas cap and inspect for any damage or debris on the sealing surface.
  • If damaged, replace the gas cap with a new one that meets OEM specifications.
  • Reinstall the gas cap securely to ensure a proper seal.

3. Evaporative Emissions System Inspection

• Sub-steps:
  • Visually inspect all hoses connected to the evaporative emissions canister for cracks or disconnections.
  • Replace any damaged hoses with new ones that match the original specifications.
  • Check the canister for blockages; replace if necessary.

4. Test and Replace Purge Valve

• Sub-steps:
  • Locate the purge valve; usually found near the intake manifold.
  • Disconnect the electrical connector and vacuum hoses.
  • Test the valve operation using a multimeter; replace if it does not function correctly.

5. Fuel System Check

• Sub-steps:
  • Connect a fuel pressure gauge to the fuel rail.
  • Turn the ignition to the "ON" position without starting the engine and check the fuel pressure.
  • If the pressure is below specifications, inspect the fuel pump and replace it if faulty.