I'd check the actual TB Actuator plug. When I had to remove my Intake plenum and plug back in the actuator the fuckin red retainer that's suppose to keep the plug from backing off somehow got jammed into the plug and broke. Thus causing it not to properly be plugged in, gave me similar codes. Ended up just forcing the plug off, breaking that red retainer and problem solved. Sometimes stupid shit happens.
Don't feel bad man. I have the R2300 phase 2 kit on mine and when I pulled the motor out to fix a bent rod and broken piston, I did the exact same thing. On a stock car they wont reach, but with the supercharger you move the plugs closer together and this can happen. They look identical, so there's absolutely no way to tell without knowing the wire colors for them. You live and learn.lol