DC

DC stands for diagnostic coverage; it is an indicator for the effectiveness of the diagnosis. It can be defined as a ratio of the failure rate of the detected dangerous failures and the failure rate of all dangerous failures in total. Classification according to EN ISO 13849-1:

Not present: DC < 60% Low: 60% ≤ DC < 90% Medium: 90% ≤ DC <  99% High: 99% ≤ DC