300Lane

Okay guys I'm brand new to the forum and also to IS300s. I'm completely in love with my new car but at the same time I completely hate it. I made the rookie mistake of unplugging my TPS sensor while the car was running and I guess I sent the car into some kind of limp mode. I have been unable to get the car out of limp and I'm at my witts end with this thing. I show codes P0120 and P1120. I have a brand new TPS sensor ready for installation, but if I can fix the issue by simply resetting the ecu please let me know. I tried draining the battery over night, pulling the ecu plugs and fuses, everything. Any and all info is appreciated. Also the car idles very high now and I only get about 25% throttle useage. The trans shifts a little hard (I'm assuming due to the limp mode/high idle) and I'm worried I'll break something else driving it this way. I know the issue could be the APPS as well, I just need to some guidance as to what direction I should go.