What BT adapter are you using?
The cause is the automatic protocol scan that most adapters are set for.
It ends up transmitting garbage that our very sensitive JGC can bus does not like.
In Torque of the opening screen, go to settings, vehicle profile, edit: 2nd item from the bottom: Preferred OBD2 Protocol-set it to:
ISO 15765-4 CAN (11bit 500k baud)
SAVE - exit Torque and restart.
Depending on adapter you can also force the protocol with AT or ST commands thru a terminal program (ELM 327 terminal-for Android)
I have more details if you need.
Trying to upload some pictures soon.