DTC P0221-00: Throttle Position Sensor 2 Signal Circuit Range/Performance: General Description
WARNING: This page is about a different car, the 2021 Kia Soul. However, it is still accessible from the selected car via links, so may be relevant.
The Electronic Throttle Control (ETC) system which is composed of throttle body, the Throttle Position Sensor (TPS) 1, 2 and the Accelerator Position Sensor (APS) 1, 2 controls the mass of air flow by driver's intention. The throttle valve opening is controlled by throttle motor which is controlled by the ECM. the TPS is a variable resistance and its value is changed by open angle of throttle valve.