If you own a Canon PIXMA or MAXIFY printer, you have likely encountered the dreaded or "5B01" error code. This message usually appears when your printer’s internal ink absorber pads are full. In most cases, the official solution involves visiting a service center. However, advanced users have discovered a piece of software known as the Canon Service Tool (CST) .
: This tool is not officially distributed to the public on the Canon Support website; Canon typically recommends visiting an authorized service center for hardware maintenance. download canon service tool v4905
: Digital licenses for "unlimited use" are frequently found on eBay for approximately $5.00. If you own a Canon PIXMA or MAXIFY