Hello,
First, sorry for writing in English but my German is very limited...

I've ported the code from the KW 1281 Protocol to use with Arduino IDE and STM32F103 board (BluePill) and an ILI9341 TFT display.

It works OK... It connects, I can read "01 Engine" and "17 Instruments" with no problem. Sometimes connection is lost but reconnects immediately.

I'm constantly reading "01 Engine" to get "l/h" value and "speed" to calculate "l/100km".

The main problem is that I loos connection above 90Km/h. And only reconnects when I return to speed below 90Km/h.

Is this a known OBD issue?

I'm using 9600 baudrate because I'm still in test phase and 10400 seemed to fail once and haven't tried again (maybe was some other problem).

I'm going to try and connect the Laptop with VAGCOM on the highway to see if it's an OBD problem or my setup...

But if anyone could help...

Thanks

No one has any idea to why this is happening?