A system and a method related to a key performance indicator (KPI) analysis system with a KPI rules builder and a method to generate configurable diagnostic KPI rules. The diagnostic engine for the KPI analysis system can be set up for easy usage by a user without detailed knowledge of specific sensor parameters in relation to the KPI rules. Instead, the KPI rules builder may provide a high level, abstract, organizational interface for generating KPI rules without specific preset correspondence of sensors to KPI rules.