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Brother error code Cannot Detect

Quick answer

Appears when a new ink cartridge was installed too quickly, a non-Brother cartridge was used, or the cartridge isn't seated correctly. Remove and reinstall the cartridge slowly until it clicks into place, using genuine Brother ink.

Caution: This step can be done wrong in a way that is costly or hard to undo, including voiding your warranty. Check your model's manual before proceeding.

Before you try the solution

  1. 1. Copy the complete message exactly as shown, including any letters, spaces, or punctuation around Cannot Detect.
  2. 2. Find the printer's exact model number. The same-looking code can mean something different on another model family.
  3. 3. Let the current print, scan, or update operation stop before touching controls, paper paths, or covers.

Manufacturer-documented solution

Appears when a new ink cartridge was installed too quickly, a non-Brother cartridge was used, or the cartridge isn't seated correctly. Remove and reinstall the cartridge slowly until it clicks into place, using genuine Brother ink.

Model scope: Brother's Error and Maintenance Messages for your exact model

If the error is still there

  1. 1Return to the screen or job that produced the message and check whether the code has cleared.
  2. 2If Cannot Detect returns, do not repeat a risky procedure. Record when it appears and check the documentation for the exact model.
  3. 3Because this message involves opening the printer, service risk, or possible damage, stop and contact Brother support or a qualified printer technician if it persists.

Other Brother error codes

All Brother error codes

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Manufacturer reference

The meaning and documented action above were taken from the manufacturer source below.

Error and maintenance messages

Verified against manufacturer documentation, last checked 2026-08-13. PrintDiag has no printers and no technician, so nothing here is claimed as tested on hardware.