Are you using this website (https://turbotax.intuit.com/stimulus-check) to register for stimulus check by filing a zero income tax return? If yes, then you cannot e-file using that site if an IP PIN is required.
You can try to update your information using https://www.irs.gov/es/coronavirus/economic-impact-payments, Otherwise, you can use the Free version of TurboTax and e-file a tax return. However, in order to e-file, you must have some sort of income.