Lexmark printer error codes indicate various issues. To fix them, first identify the specific code. Common errors include paper jams, low toner, or connectivity issues. For paper jams, clear the jammed paper and check for any obstructions. Low toner or ink requires replacing the cartridge. Connectivity issues may need checking network settings or cables. Some errors might require a firmware update, which can be done via Lexmark's website. For detailed guidance, refer to the printer's manual or Lexmark’s support website. If the issue persists, contacting Lexmark customer support may be necessary for more complex problems.