Causes and Fixes P2112 Code: Throttle Actuator Control System Stuck Closed

How to fix P2112 Code: Throttle Actuator Control System Stuck Closed
A P2112 code is set when the computer (ECM/PCM) detects the throttle is not in the expected position.
The Throttle Actuator is a DC motor controlled by the computer (ECM/PCM/TAC) that opens and shuts the throttle body plate (butterfly).
The Throttle Actuator Control (TAC) is all the components involved, including wiring, DC motor, butterfly, sensors, and computer (ECM/PCM/TAC)

If the throttle body is replaced, it may have a Throttle Relearn procedure.

Possible Causes of a P2112 Code:
Dirty or Bad Throttle Body (Needs Cleaned or Replaced)
Wiring (Open / Short / Fuse / Bad Connections)
Bad TAC Module (Some Vehicles the Actuator is Controlled by the ECM or PCM)
Bad Throttle Position Sensor or Pedal Position Sensor (Will Usually Get Another Code)

By using this information, the user assumes all risks of use.

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