Error U051 on Canon Printers

MAJ 10/09/15
Error U051 means "no print head installed. Install the print head". It's a cartridge error or the printhead is defective.

Solution 1:
  • Press the triangle button for 5 seconds:

Solution 2:
  • Reinstall the cartridges; change the cartridges if the error persists.

Solution 3:
  • If the error persists: verify that the contacts on the cartridges and the ink cartridge are clean and unscratched.
  • Finally, it is possible that the printhead is defective.


Anonymous said...

What triangle button?

Jann Lassalle said...


See picture above...

Lisa Rader said...

I do not get this error code, but my printer goes through the motions as if it is printing only to have blank pages emerge. Is this the same thing?

Jann Lassalle said...

Hi Lisa,

If it "prints" blanck pages, the printhead is defective...