Common error codes associated with Canon printer offline issues include "Printer not responding" or "Printer offline." These codes often indicate communication breakdowns between the printer and the computer. Error code E100 occurs when the printer is not properly connected, while E202 signifies issues with the network connection. Error codes like E300 and E301 may relate to problems with paper feed or printer cover. Identifying and troubleshooting these codes involves checking connections, resolving network issues, or inspecting physical components.
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