YDT v2.0 to v3.0, depending on the generation of the vehicle's CAN-bus or K-Line communication system. Hardware Requirements for Installation
The Evolution and Impact of the Yamaha Diagnostic System (YDS) Yamaha Diagnostic Tool Software Download
If a fault code returns immediately after clearing it, the physical issue has not been resolved. The software cannot fix broken hardware; it can only point you to where the failure is occurring. Conclusion YDT v2