It's not clear what kind of PIN you mean by "E PIN". Are you referring to the 5-digit PIN where filers "sign" their return? If so, you don't have to use the same 5-digit signature PIN as last year. You'll be able to sign with a new one. It's on a screen with today's date and your birth date. It will say to choose any 5 digits that you want, except it cannot be all zeros.
Or are you referring to a 6-digit IP PIN (Identity Protection PIN) that some filers will need? If so, that 6-digit IP PIN is entered in a completely separate section of the TurboTax interview. Not everybody will need an IP PIN, which is mainly for victims of ID Theft and for those who elected to opt-in to the IP PIN program. If that's what you are referring to, and if you are required to use a 6-digit IP PIN, we can tell you how to retrieve one from the IRS.