P0221 & P0100 point to the MAF & throttle body.
The other is the air injection pump, and since you say the contacts are OK in the K40 module, I'd expect wiring or the pump itself as that fault.
As to the first 2, and the idling issues, I'd have to first try cleaning the MAF/IAT sensor and make sure the wiring and plug is OK. The throttle body is another matter :
I'd first remove the TB and then pop the clips off the plastic cover. You will see a 3 or 4 bladed wiper contact inside, this is the TPS ( throttle Position Sensor ). Clean it up with contact cleaner and see it that helps. If not then replace the throttle body.
If it's the OEM 68mm TB ( non-SRT6 ) car - then I'd replace it with a 74mm one .
74mm : A 113 141 0125
68mm : A 112 141 0125