Freematics Forum

Hi everybody,

I have an issue with my OBD2 UART adapter

I read speed, rpm and voltage with no problem but ambient temperature gives me a completely wrong value

Is there some calculation to make with that value or am I missing something?

Thank you

Hi everyone,

I just received my UART OBD2 adapter and did a quick sketch to try it

I am reading the following PIDs:

obd.read(PID_RPM, rpm);
obd.read(PID_AMBIENT_TEMP, temp);
obd.read(PID_SPEED, vitesse);
obd.read(PID_CONTROL_MODULE_VOLTAGE, volt);


Everything is fine exept for the Ambient ...