OBD2 throttle position PID
I was experiencing some problem while reading throttle position. I was reading PID 0x11 as I don't know which one to read. But as I accelerate, the pedal position(0x11) value is not smoothly read. It suddenly increases to 86% even if I have applied throttle around 30%.
What is the difference between PID no. 0x11,0x45,0x47,0x48,0x49,0x4A,0x4B.
0x11 - Throttle position
0x45 - Relative throttle position
0x47 - Absolute throttle position B
0x48 - Absolute throttle position C
0x49 - Accelerator pedal position D
0x4A - Accelerator pedal position E
0x4B - Accelerator pedal position F
Which is the best to read the throttle position? I believe 0x11 but then whats the significance of rest of them?
Thanking you in advance.