My Vue is a 2003 V6 3.0L with an automatic transmission. One day out of nowhere, the transmission started acting up. When shifting between D, N, R, L, etc, the car hesitates for at least a whole second, and then jerks into gear very harshly. It's currently in limp mode to prevent some kind of further damage. I checked the transmission fluid: it's clean and doesn't smell off. My guess is a transmission control module solenoid but am not certain. If you guys have any ideas, I'd really appreciate it. Here are the current OBD-II codes I'm getting:

P0161 - O2 Sensor Heater Circuit Bank 2 Sensor 2
P0056 - HO2S Heater Control Circuit Bank 2 Sensor 2
P0700 - Transmission Control System (MIL Request)
P0966 - Pressure Control Solenoid "B" Control Circuit Low

 

Need to test that solenoid.