You can buy a fault code reader from ebay, £30ish.
This will allow you to read and identify the code and then clear it, or you can find someone who has vagcom to identify and clear the code for you (For free)
Or you could pay a dealer/garage/awesome £40 for 2 minutes work in reading code and clearing it for you.
Where do you live? Im sure someone could
help you out.
I have vagcom and fault code reader but down in Shropshire, so probably miles away from you.