To use the tool effectively, the printer must first be placed into . If the tool returns error 005 or 006, the printer has not entered this mode correctly. Service Tools for Canon Printers | PrinterKnowledge

: This often indicates an IP address or subnet mask conflict during Wi-Fi setup on series like the TS3600.

: On some older models like the MP160, E23 signals a paper jam or a carriage obstruction preventing the print head from moving freely.