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canon color imageclass mf743cdw cant get to print while low on toner

I have the canon color imageclass mf743cdw, and it says color toner low/out but wont let me print in general. Is there a way to set it to black only color and still print?

Product Expert
Product Expert

Hi Turned2ash,


Welcome to our Canon Forum! 


The "Low Cartridge Level" message on your Color imageCLASS MF743Cdw notifies you that a toner cartridge needs to be replaced soon. This message allows you to make sure that you have a replacement toner cartridge ready. We suggest you replace the toner cartridge if you see this message before you start to print a large job.


You can specify to continue printing using the printer's operation panel when the amount remaining in the toner cartridges is low using the process below:

<Menu> -> <Preferences> -> <Display Settings> -> <Action When Warning> -> <Low Cartridge Level> -> Select <Continue Printing> -> <Apply> -> <Yes> ->HOME


You can also set the Color mode to black and white:


<Menu> -> <Function Settings> -> <Printer> -> <Printer Settings> -> <Color Mode> -> Select <Black & White> -> HOME


If you need help more help, please contact our support group at 1-800-OK-CANON (1-800-652-2666) Monday-Friday from 10:00 am to 6:30 pm ET, excluding holidays.


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I have same model and it shows low on toner BUT I checked the consumables and it shows 90% Black and 40% Color remaining. I understand the percentage may not be exact but 40% is hardly considered “low”. Is there a way to adjust how the printer defines “Low”?
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