Error U043 on Canon printers

This error appears on these models: Canon Pixma MP500, MP610, MP830, MP640, MP800, MP530...

Solution 1:
  • Press and hold the Stop/reset button for 5-10 sec then release.

Solution 2:
  • Clean the electrical contacts on the chip of the cartridge. 

Solution 3: 
  • Replace the faulty cartirdge.


Marcia said...

Where do I find the cartridge?

Unknown said...

I replaced all ink carts with OEM, cleaned printhead and check'd elec contacts--still getting U043 code

pmmc said...

When I removed the ink tanks in response to this code, found that there was an accumulation of ink on the contacts in the print cartridge, which I assume was short circuiting the chip reader. When I cleaned out this ink using 3 or 4 cotton tips, the error message stopped.

tripleb99 said...

Check the actual pins on the front of the cartridge carrier, they might be bent. If so, ever so slightly bend them back to the original position. If they are broken, contact Canon. You'll probably be buying a new printer.