Please provide what is the format of OBD codes generated into chip?

Question

What is the data format when OBD code is stored into a memory or when its getting transmitted thru Telematics

Answer 1

OBD-II codes are stored in hexadecimal format into the ECU/PCM, OBD-II reader are programmed to convert this to a code like P0300 and so on.

see more info below

http://en.wikipedia.org/wiki/OBD-II_PIDs