Adelaide Auto Pro: A Guide for Kia Owners on Kia Diagnostics Kia vehicles are known for their modern engineering, advanced safety features, and dependable performance. However, as Kia models become more technologically advanced, they rely heavily on electronic control units, sensors, and onboard computer systems. Kia diagnostics is the professional process of connecting specialized diagnostic equipment to the vehicle’s onboard system to identify faults, read error codes, and