Stop printing if the same fault returns after one careful restart or basic recovery step.
Brother / MFC / DCP inkjet series

Machine Error 46 - The ink absorber box is full and needs service replacement.

The ink absorber box is full and needs service replacement.

This guide is scoped to the MFC / DCP inkjet series family. Exact menu wording, cartridge naming, and service behavior can still vary by model variant and firmware.

Severity

High

Most likely cause

The waste-ink absorber has reached the end of its expected service life.

Can you keep using it?

Usually no - see below

Consumables involved

Ink absorber, Waste ink box

Can you keep using it?

Can you keep using it?

Contact customer support if any of these apply

  • !Machine Error 46 is displayed at all; this is already a service-level condition.
  • !The printer is older and out of warranty, but still worth repairing because it has a low page count otherwise.
If the printer still starts normally: Try one careful restart or the first official recovery step, then stop if the same error comes back straight away.

What to check first

Step-by-step checks

  1. 1

    Escalate

    Stop trying to print normally because the machine is warning about a service-life limit, not a temporary print error.

    Start with the official recovery step before moving on to parts or deeper servicing.

  2. 2

    Escalate

    If the printer is still in warranty, contact Brother support before attempting any unofficial reset path.

  3. 3

    Safe first step

    Back up any urgent scanning workflow to another device if the unit is business-critical.

Background

What this message usually means

Brother uses Machine Error 46 when the ink absorber pad has reached its service limit. This is not a routine cartridge error. It means the machine’s waste-ink capacity has been consumed to the point where Brother expects an engineer or authorized service path to replace the absorber hardware.

Diagnosis

Likely causes

Most common

The waste-ink absorber has reached the end of its expected service life.

Common

Repeated automatic head-cleaning cycles have filled the absorber over time.

Possible

The machine is tracking a service-limit counter that has now been reached.

Service

When service or replacement is more likely

  • -This is a good example of a code where resetting counters without absorber replacement can create a messier failure later.
  • -Treat 46 as a service-limit warning, not as a normal consumables prompt.

See also

Related codes in this family

Explore more

More Brother printer families

Keep browsing

Where to go next

Source notes

Brother’s official Machine Error 46 article explains that the ink absorber pad is full and needs replacement by service personnel.

Built around official Brother MFC and DCP inkjet support articles. Exact LCD text and service policies can vary by region and model age.

Printer error codes can vary a little by firmware, region, and exact model variant. Use this guide as a family-level starting point and stop if the next step would require disassembly or service-mode changes.

Known family variants: MFC-3420C, MFC-3820CN, MFC-5100C, DCP-540CN

Last reviewed: 2026-04-12

Reference: Open reference

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