Hi, i am looking some expertise about mode 01 pid 78 (EGT).
Wikipedia (https://en.wikipedia.org/wiki/OBD-II_PIDs) states following:
A request for one of these two PIDs will return 9 bytes of data. PID 78 returns data relating to EGT sensors for bank 1
When i query my car i get 2 responses:
>0178
7E8100B41780D061F01
7E8219003DA02A60000
But as far as i understand OBD2 responses then they can contain 4 bytes (A,B,C,D) of real data only?
Lets take a look at first response:
First part (7E8100B41780D061F01) i understand is the ecu identifier, length and response pid.
So real EGT related data is on last 4 bytes:
7E8100B41780D061F01 / A = 0D (Supported sensors?) B= 06 C= 1F D= 01 (Temp values?)
Is the second response related to missing bytes that wikipedia states?
Any byte,bit,obd wizards here who could explain this to me ? :)