How to get trouble codes using present Github code

[JitenGoswami]

Hello,
I have been testing present Github code with wifi ELM-327 OBD-2 device. RPM is completing working fine. But i want to get a Trouble Codes and for that i tried to make few changes as well.

Yet i am not able to get any Trouble Codes.

It would be really appreciated if any one of you can help me to get trouble codes ?

Regards,
Jiten

[TyrfingMjolnir]

Any way to expose this to kitura?