my Volkswagen Golf engine light is on but car runs fine what should I do

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface with the engine off.

2. Scan and Interpret 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 error codes displayed.
• Disconnect the scanner after recording.

3. Inspect Gas Cap

• Locate the gas cap and remove it.
• Inspect the gas cap for cracks, wear, or debris on the sealing surface.
• Clean the sealing surface and threads of the filler neck with a clean cloth.
• Reinstall the gas cap securely until it clicks.

4. Clear Error Codes

• Reconnect the OBD-II scanner to the diagnostic port.
• Select the option to clear or erase the error codes.
• Turn the ignition off, then on again to confirm the codes have been cleared.

5. Monitor for Recurrence

• Drive the vehicle under various conditions (city and highway) for at least 10-15 miles.
• Keep an eye on the dashboard for the check engine light returning.