Car diagnostic devices are essential tools for automotive professionals and enthusiasts, designed to identify, troubleshoot, and resolve issues in vehicles. These devices range from basic OBD-II scanners for reading engine codes to advanced diagnostic tools with live data streaming, ECU programming, and compatibility with multiple vehicle brands. Common products in this category include handheld diagnostic scanners, Bluetooth/Wi-Fi OBD-II adapters, professional-grade diagnostic tablets, and specialized software for in-depth analysis. Features often include real-time monitoring, fault code clearing, emission testing, and vehicle system reports. These tools streamline maintenance, improve repair accuracy, and support compliance with automotive standards.