Getting code 25

[Maxo]

I just started getting transmission code 25 (Engine torque control signal). Honestly it really came as no surprise...
The transmission has been acting unusual. Usually after long drives at highway speeds it bucks, bogs, and seems to shift harshly - even after sitting for a day. It never before threw this code until the other day when it stalled at a stop sign.
I also have what appears to be a misfire when warmed up at idle. I've read that a engine misfire is a common misdiagnose for a torque converter lockup malfunction.

Does anyone here have experience with this particular issue? Is TQ lockup controlled by a solenoid that could be sticking?