Posted by Ink Oasis on 2/13/2013
to Inkjet Printer Ink
The U 162 error means that the remaining ink in the cartridge is unknown. This can happen with a new Canon cartridge, that isn't being read properly by the printer, but is more likely to appear when using a remanufactured Canon cartridge. Even though the remanufactured cartridge has been fully refilled with ink, the chip, which tells the printer how much ink is remaining, can't be reset.
To clear this error hold the stop/reset button on your printer for 5 seconds or more and the error will clear. This process clears the error and you will be able to print or copy again. Even though the error has been cleared the printer will not display the proper ink levels because the chip in the cartridge cannot be reset.