I tried sending a simple OBD2 query using the M2RET firmware with the following command:
CAN0SEND=0x7DF,2,1,0
but I never get any kind of reply, even though it’s seeing and logging other CAN traffic. I tried setting CAN0LISTENONLY=0 and tried several different values for CAN0SPEED and disabling all the filters, but I still got nothing.
Has anyone else been able to do a simple OBD2 query? My car is 2013 so it should support the standard queries over CAN.