Roger MDM vs J1939FaultCode

Roger Mobile Device Manager (RMDM) is an application for mobile devices with iOS operating system used for low-level configuration of selected Roger devices. Communication between the mobile device and the device being programmed takes place via the transmission in the Bluetooth standard. The application is used during device installation in order to adapt the device to a specific usage scenario and also during its operation. In the latter case, the program enables the management of autonomous functions offered by a given type of device. The RMDM automatically adapts displayed screens to the device with which the application is currently working.

J1939 FaultCode is a practical offline diagnostic reference tool for commercial vehicle technicians, fleet maintenance teams, and engineers. Quickly look up J1939 SPN parameters, FMI definitions, combined DTC meanings, and brand-specific fault code mappings. The app is designed for fast field use, with built-in data and no internet connection required for core lookup features. Main features: Search SPN codes by number or keyword View FMI definitions with clear explanations Query DTC combinations using SPN + FMI Check common causes and repair suggestions Browse brand-specific fault code mappings Save frequently used codes to Favorites Review recent lookup history Switch between English and Chinese Works offline after installation Whether you are troubleshooting engine, aftertreatment, fuel, sensor, electrical, or communication faults, J1939 FaultCode helps you find useful reference information quickly and consistently.