Hello
After experiencing the same problem with my ELM327 Bluetooth V2.1 as thesanerone. I ordered an ELM327 USB V1.4 and it works for my Panigale V4 2018 .
The problem comes from the ELM version .
Version 2.1 is not supported by the MelcoDiag application.
Hello, I have exactly the same problem with my 2018 Ducati Panigale V4.
I'm using an ELM 327 V2.1 with Bluetooth (China). I tried changing the communication speed to 9600 baud, but it didn't work any better.
Is it a ELM 327 problem or cable problem !!??