ErrorCodeDoctor
Brother · Printer (Laser)

Brother Printer (Laser) Size Error 2-sided / Size Error DX error code

Difficulty: Easy · Cost: $0 · Duration: 2m

The Size Error 2-sided or Size Error DX message on your Brother laser printer means the paper size set in the printer driver or loaded in the tray is not available for automatic 2-sided printing. Only Letter, Legal, and Folio paper sizes are supported for automatic duplex printing. Press Stop/Exit, change to a supported paper size, and try again.

Common causes

  • The paper size specified in the printer driver is not supported for automatic 2-sided printing
  • The paper loaded in the tray is a size that does not support automatic 2-sided printing

How to fix it

  1. 1

    Press Stop/Exit

  2. 2

    Change the paper size in the printer driver to Letter, Legal, or Folio — these are the only sizes supported for automatic 2-sided printing

  3. 3

    Make sure the paper in the tray matches the selected size

  4. 4

    Try printing again

Related Brother Printer (Laser) error codes

1

2-sided Disabled / 2-sided Disable

The back cover or 2-sided tray is not properly closed or installed

easy
2

Access Denied

The function you are trying to use is restricted by Secure Function Lock

medium
3

Cartridge Error / Put the Toner Cartridge back in

The toner cartridge is not installed correctly in the drum unit

easy
4

Comm. Error

A poor telephone line caused a fax communication error

easy

Size Error 2-sided / Size Error DX error — frequently asked questions

What does the Size Error 2-sided / Size Error DX error mean on a Brother printer (laser)?

The paper size is not supported for automatic 2-sided printing

What causes the Size Error 2-sided / Size Error DX error?

The Size Error 2-sided / Size Error DX error is usually caused by: The paper size specified in the printer driver is not supported for automatic 2-sided printing; The paper loaded in the tray is a size that does not support automatic 2-sided printing.

Can I fix the Size Error 2-sided / Size Error DX error myself?

Yes — this is rated an easy fix that most people can do themselves, typically in 2m.

How much does it cost to fix the Size Error 2-sided / Size Error DX error?

Fixing the Size Error 2-sided / Size Error DX error on a Brother printer (laser) typically costs $0, depending on parts and whether you do it yourself or hire a technician.

Is it safe to keep using my printer (laser) with the Size Error 2-sided / Size Error DX error?

In most cases yes, but it's best to address the Size Error 2-sided / Size Error DX error soon — see the fix steps below to resolve it.