P0122 LEXUS – Throttle Position Sensor/Switch ‘A’ Circuit Low Input

 

P0122: DIY Repairing Video Tutorial

https://youtu.be/CzmNzVtvus0

Check out nonda Auto DIY Center for more engine error code repairing videos.
https://www.youtube.com/playlist?list=PL-Lyko0O0oxHe1AGvzwAz-wokJPXAtW97

 

P0122 LEXUS Possible Symptoms

  Engine Light ON (or Service Engine Soon Warning Light)  

P0122 LEXUS Possible Causes

  Faulty throttle position sensor.,Throttle position sensor harness is open or shorted,Throttle position sensor circuit poor electrical connection  

P0122 LEXUS Description

  The throttle position sensor (TPS) responds to the accelerator pedal movement. This sensor is a kind of potentiometer which transforms the throttle position into output voltage, and emits the voltage signal to the Engine Control Module (ECM). In addition, the sensor detects the opening and closing speed of the throttle valve and feeds the voltage signal to the ECM. Idle position of the throttle valve is determined by the ECM receiving the signal from the throttle position sensor. This sensor controls engine operation such as fuel cut. On the other hand, the Wide open and closed throttle position switch, which is built into the throttle position sensor unit, is not used for engine control.