Abstract: The system and method include obtaining fleet operating data from a fleet of machines and a machine operating data set from an individual machine. The fleet operating data includes a plurality of fleet operating data codes and fleet time data. The machine operating data includes at least one machine operating data code. A diagnostic system server is configured to establish a correlation for individual data codes and groups of data codes of the plurality of fleet data codes based and to compile one or more of the individual data codes and one or more of the groups of data codes into a plurality of diagnostic entries in a database. The diagnostic system analyzes the at least one machine operating data code to determine if an alert is associated with the at least one machine data code and provide any associated alerts to a user.