Error to Add New PID to OBD-II Uart Adapter

[rDeveloper]

Hello,
Im testing the "OBD2 adapter" and with the "rpm_led_uart" sketch work ok.
I added other Pid as PID_ENGINE_LOAD, PID_INTAKE_MAP , that reads the data, but if i add some PID´s as ENGINE_TORQUE_DEMANDED, PID_FUEL_PRESSURE, don´t it read and the reading the other PID is slows.

Is it possible that "OBD2 adapter" can´t read all Pid's in all cars?

Thank you very much

[stanley]

That's mostly because your car is not responding to requests of those PIDs.

[onche]

Hello, si it means that we cannot get those PIDs even if they are standard ? Is there a way to find it ? I need the torque
cheers