Check engine light came on this morning, stopped at Autozone to pull the code and came up P1605. I searched and there isnt really much on this particular code. Majority of its occurences seem to be on vehicles that have ongoin a 5 speed swap. The only thing I got from reading is signal from TCm not sent to ECM. Everything has been running smooth with my transmission and I haven't had any problems with it. Is this something that you would generally notice when theres a problem? I reset the light and I'll see if it comes back on, but anyone who has any input I would appreciate it. Maybe its just some randon ecu fluke