The System Errors are organized in groups as follows:

Group 01 - Hardware Test Group.
Group 04 - Intelligent I/O (Jetdirect) Errors.
Group 06 - Line Sensor Errors.
Group 08 - Pen Energy and Thermal Management Errors.
Group 09 - Hard Disk Drive Errors.
Group 0A - Ink Delivery System Errors.
Group 0B - Hardware Initialization Errors.
Group 0C - Drop Detection/Nozzle Recovery Related Errors.
Group 0D - Miscellaneous Errors.
Group 0F - Firmware/Software Errors.