Epson L566 Error OxC5 Epson L566 Error Code OxC5 Quick Guide: Ink Device Error, Ink Cartridge Failure, Holder Board Assy Failure (CSIC or Contact Failure), Main Board Failure, Cable or FFC Disconnection. If you are encountering Error Code OxC5 on your Epson L566 printer, it typically indicates an ink device error. This error message may…