I have the PV Auto Tune Target Tune setup on my 2016 TGU. This includes the wide band O2 sensors and the original factory O2 sensors unplugged but still in the head pipe. Today while listening to XM radio on my TGU while cleaning and oiling the K&M filter, I just happened to stick my fingers near the front O2 sensor and noticed it was very warm. The rear sensor was also warm as would be expected.
The ignition switch was in the accessory position and the bike was cold. It had been sitting in my shop since a ride yesterday. Normally the only thing, that I have noticed, that is on in the accy position is the tour pak lights, tag light, brake lights if the brake pedal is pushed, and the radio if turned on.
I know the O2 sensors are warmed up when you turn the ignition to the run position but I never expected them to be active in the accy position. I don't know if this occurred with the stock O2 sensors or not, but I would have to "ASSUME" it did. Any thoughts on this? Jack Klarich ????? BTW, this would increase the load on the battery a good bit.