Canon error code #406
Quick answer
A USB storage error occurred while printing/scanning from a USB device. Reinsert the USB device, reduce the number of pages, or verify the device is formatted as FAT16/FAT32.
Before you try the solution
- 1. Copy the complete message exactly as shown, including any letters, spaces, or punctuation around #406.
- 2. Find the printer's exact model number. The same-looking code can mean something different on another model family.
- 3. Let the current print, scan, or update operation stop before touching controls, paper paths, or covers.
Manufacturer-documented solution
A USB storage error occurred while printing/scanning from a USB device. Reinsert the USB device, reduce the number of pages, or verify the device is formatted as FAT16/FAT32.
Model scope: Canon's imageCLASS error-code documentation for your exact model
If the error is still there
- 1Return to the screen or job that produced the message and check whether the code has cleared.
- 2If #406 returns, do not repeat a risky procedure. Record when it appears and check the documentation for the exact model.
- 3If the documented action does not clear #406, contact Canon support or a qualified printer technician with the model number and complete message.
Other Canon error codes
- 495AAn error occurred while communicating over Wi-Fi or while in standby. Canon's remedy is to turn the printer off and on again.
- #001The original document is jammed in the ADF feeder during a fax/scan job. Remove the jammed original per the paper-jam troubleshooting section.
- 1000There is no paper in the rear tray, or the paper is not loaded correctly. Canon's remedy is to reload the paper, align the guides, set the paper information and press OK.
- 1200The scanning unit or cover is open. Closing it clears the message.
- 1240The operation panel is closed while a job was in progress. Open the operation panel and press OK to resume printing, or press Stop to cancel the job.
- 1300Paper is jammed while feeding from the rear tray. Canon's remedy is to pull the paper out slowly with both hands. If the paper tears, the procedure escalates to opening the printer to retrieve the fragments.
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Manufacturer reference
The meaning and documented action above were taken from the manufacturer source below.
Error Codes — Canon imageCLASS MF6180dw/MF6160dw manualVerified against manufacturer documentation, last checked 2026-08-13. PrintDiag has no printers and no technician, so nothing here is claimed as tested on hardware.