The Throttle Actuator is located at the front or top of the engine and is operated by the car’s computer through an electrical signal.
The Powertrain Control Module (PCM) relies on voltage signals from the coolant temperature, intake air temperature, engine RPM, and air conditioning pressure sensors. In this way, it determines when and how long the Throttle Actuator is required to operate.
When the DTC P2100 OBD2 code is set, it means that the Throttle Actuator Control (TAC) motor circuit is open. For this reason, it will not work.