why does my Honda Pilot's engine light turn on after fueling?

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 prevent any electrical shorts.

2. Inspect and Replace Fuel Cap

• Remove the existing fuel cap and inspect for cracks or wear.
• Clean the fuel filler neck with a cloth to ensure a proper seal.
• If damaged, replace with a new OEM or quality aftermarket fuel cap.
• Reinstall the new fuel cap, ensuring it clicks into place properly.

3. Evaporative Emission System Inspection

• Locate the EVAP system components: charcoal canister, purge valve, and vent valve.
• Visually inspect for signs of damage or disconnection.
• If any component is faulty, remove it for replacement.
  • For the purge valve:
    • Disconnect the electrical connector and hoses.
    • Remove mounting screws and take out the valve.
    • Install the new valve in reverse order of removal.
• For the charcoal canister:
  • Disconnect all hoses.
  • Remove mounting screws and replace as necessary.

4. Clear Error Codes

• Reconnect the battery.
• Use the OBD-II scanner to clear any stored error codes from the engine control unit (ECU).
• Perform a test drive to confirm that the engine light does not return.