No, you cannot "redo" your taxes on turbo tax because they have already been filed. Follow the instructions listed on the CP-05. Did they adjust your refund and send you the right amount? Did you get back the large refund and now they are requesting money back? The best thing to do is to call the IRS either the general number or the number on your letter and speak to an agent to find out what needs to be done to fix your taxes.
Oh, by the way if your federal is wrong, your state might very well be wrong too, because most states use the federal numbers.
Word of wisdom; when you pay someone to do your taxes make sure they go over the figures with you. If they show you an amount that doesn't look right, ask them where that amount came from and make them explain it to you so you understand. If they don't, don't pay them and don't let them file your taxes because you are liable not the tax preparer.