How do I resolve an 'E01' error (ink level low) on my Epson L3100?

For an 'E01' error, first check the ink levels using the printer's control panel or Epson iPrint app. If an ink cartridge is low, replace it with a new one. Ensure the ink cartridges are properly installed and seated. Sometimes, cleaning the print head can resolve this, even if ink levels appear adequate. Make sure you are using genuine Epson ink.