How can I manually go into a form to correct something that Turbotax is deducting from Schedule 1, but which should not be deducted (401K contribution)?

[grieser-d]

I don't understand why Turbotax is inserting the max allowable contribution to a retirement account (401k) but it exceeds what I actually contributed.

[Opus 17]

One of us is probably confused.  If you are an employee with a W-2, your 401k contributions are automatically subtracted from your box 1 taxable wages, and they are reported in box 12.  Turbotax automatically captures them from your W-2.  You do not enter them anywhere else on your tax return.  A 401k is NOT an IRA and you should not enter 401k contributions in the IRA section.  401k contributions also don't have anything to do with schedule 1 as far as I know.  Can you clarify, where are you seeing an adjustment on schedule 1?