Abstract: A diagnostic system for a vehicle that provides vehicle operational data during a fault code occurrence is disclosed. The diagnostic system includes an onboard diagnostics system and an engine control module. The onboard diagnostics system is configured for generating vehicle diagnostics codes when the vehicle operates outside predetermined operating parameters. The engine control module is operatively configured to monitor vehicle operational data for a plurality of vehicle subsystems. The onboard diagnostic system is configured to wirelessly transmit a vehicle diagnostic code when the vehicle operates outside of the predetermined operating parameters to a remote data storage location. The vehicle operational data is configured to be wirelessly transmitted from the engine control module to the remote data storage location.