How to Perform a Canon PIXMA G3400 Reset (Waste Ink & Maintenance Cartridge)
Most G3400 sponges are only half full when this error appears. However, Canon wants you to send it to a service center. Since that costs almost as much as a new printer, most people use a reset tool. The Step-by-Step Reset Guide (Service Tool Required) You cannot do this via the printer buttons alone. You need the Canon Service Tool V3400 (or newer). canon g3400 reset
When this happens, your printer locks up. It won't print, scan, or even move. How to Perform a Canon PIXMA G3400 Reset
If you reset this 3 or 4 times without cleaning the printer, the sponge will eventually overflow. the sponge will eventually overflow.