How to solve the p2 100 fault code?

P2 100 fault code indicates throttle actuator A control motor circuit/open circuit. Need to check the throttle, generally changing the throttle can solve the problem.

The throttle assembly of automobile engine is the key component of electronic throttle control (ETC) system. On the one hand, it executes the instructions from the electronic controller to adjust the throttle opening to control the air intake, and at the same time, it can output the signal reflecting the throttle position for the system to monitor the actual throttle opening. In the Electronic Throttle Control (ETC) system, the throttle actuator is a stepping motor, which is responsible for controlling the throttle opening according to the instruction of the throttle control module.

Throttle assembly consists of throttle, throttle actuator (DC motor) and throttle angle sensor. The instruction from the electronic controller makes the DC motor act and affects the throttle opening through the transmission mechanism. There are two potentiometers as position sensors, and their resistance values change with the change of throttle position. These two potentiometers, together with the two potentiometers on the accelerator pedal for monitoring the pedal travel, form a part of the whole ETC monitoring function, which can provide the expected system control redundancy. (Photo/Text/Photo: Wu Binbin) @20 19