Can I find the reason for the delay of my Federal refund through TurboTax or do I need to call IRS?

Once efiled, TurboTax doesn't receive any other information about your return at the IRS. 

If the IRS "Where's My Refund" tool says it is still being processed, and if it's been longer than 21 days since an efiled return was accepted, here's how to reach a live IRS agent to inquire about the delay.

IRS:  800-829-1040 (7AM-7 PM local time) Monday-Friday

When calling the IRS do not choose the first choice re: "Refund", or it will send you to an automated phone line.

• First choose your language.  Then listen to each menu before making the selection.
• Then press 2 for "personal income tax".
• Then press 1 for "form, tax history, or payment".  
• Then press 3 "for all other questions."
• Then press 2 "for all other questions." 
• It may then ask for your SSN, but do not enter it.  Just wait.    If it asks for SSN a second time, still do not enter it.
• Then it will get "tired", and you'll get another menu.  Choose 2 for "personal".
• Then in the next menu choose 4 for "all other inquiries", and it should transfer you to an agent but expect a long wait.
• I usually use a speakerphone so I can work on something else while waiting.