Can you run a scan to check for errors

This is a user-to-user forum. You can contact Apple for service questions here:

Genius Bar Reservation and Apple Support Options - Apple

And yes, they can run remote diagnostics.

However, you may want to post your question here as well. What problems are you having with your phone?

What kind of errors are you referring to? If you are experiencing a problem with your device, you can make a Genius Bar appointment and explain the issues to the Genius. They do have diagnostic software they use for the iPhone, however I'm not aware if they run all devices through that. You can ask to see though.