Throttle issues help

So we just got our taco and noticing wierd throttle issues and from research it points to throttle body but just wanted to get opinions before we start throwing parts at it.

2009 Tacoma
V6 TRD Supercharger

Symptoms
-threw code p2121 once and nothing sense
-below 4k rpm throttle jumps 2-300 rpm
-randomly at slow speeds falls on its face and throttle doesn't respond till completely let off and half way floor it.

 

Model year, engine?

 

my bad forgot about that

2009 Tacoma
V6 TRD Supercharger

 

I would start by cleaning your throttle body (probably not the problem but good anyways since you're already messing with it). And I would test the throttle position sensor. If it's not the tps I would check grounds, related wires for cracks/ shorts, all connections to make sure they're not loose or dirty etc.

 

clean the MAF

 

Also check your connections at the throttle body and the accelerator pedal, as I'm sure you know this is a drive-by-wire system.
P2121: Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance

 

wires look good nothing out of the ordinary

 

Disconnect the connectors and check the pin fitment and also for corrosion or dirt if you have not done so yet.

 

I did that already. I have no cleaned the maf or the throttle body yet but will try. I just figured if it's common I'll just replace it