The Fault Codes are ready-made codes that can be selected while in NETS Test Mode. Users may select a code label instead of typing detailed information about the fault. Users can add faults and fault codes specific to the user’s test operation by clicking the Add button. Added codes may be deleted by clicking the Delete button. The user must select the Save button once a new code is added, or that change will not be retained.
Source: NETS User Manual, Revision D, document 132-06035-0006, section 3.10.