An augmented reality based interactive troubleshooting and diagnostic system and related operating methods are presented here, including a diagnostic communication method for a vehicle having an onboard diagnostics subsystem. An exemplary embodiment of the method uses a mobile user device to obtain self-diagnostic information generated by the onboard diagnostics subsystem. The method continues by sending a query to a solution database system, wherein the query includes the obtained self-diagnostic information and vehicle configuration data descriptive of the vehicle. The mobile user device receives solution data provided by the solution database system in response to the query. The solution data addresses at least one topic associated with the obtained self-diagnostic information. The method continues by operating the camera and the display element in response to the received solution data to perform an augmented reality procedure associated with the at least one topic.