As I posted before, I just put used engine in my truck. I need help p2106, p2135, koeo p0121 help:

 

P0121 - Throttle/Pedal Position Sensor A Circuit Range/Performance For Vehicles With Electronic Throttle Control (ETC)
P2106 - Throttle Actuator Control (TAC) System - Forced Limited Power
P2135 - Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation

I would venture a guess that these all are related to one issue. Possible wiring or sensor not connected right.

 

Steve, I will need to remove your other post, as only one per subject is allowed.

Are you asking what the code mean? If so, there is a list in th Articles and How TO Section:
https://www.f150online.com/forums/ar...-dtc-list.html

Here is the P0121:

P0121 Throttle/Pedal Position Sensor A Circuit Range/Performance

 

well do I diag the koeo code first