Will the OBD-II UART product allow me to enter data into the vehicles OBDII bus or will it only allow me to read data from it?
This is primarily used to retrieve data from your vehicles ECU. While it might be possible to enter data into your ECU with the OBD-II UART, we don’t have any guides for that and can’t assist you in making that happen.
If anyone else knows how, please feel free to share your knowledge!