DTC P2100-18: Throttle Actuator "A" Control Motor Circuit Current Below Threshold; DTC P2100-19: Throttle Actuator "A" Control Motor Circuit Current Above Threshold [08/2021 - ]: Description

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 350, 2023 Lexus ES 350, 2022 Lexus ES 350, 2021 Lexus ES 350, and 2020 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.

The throttle actuator is operated by the ECM and opens and closes the throttle valve using gears.

The opening angle of the throttle valve is detected by the throttle position sensor, which is mounted on the throttle body with motor assembly. The throttle position sensor provides feedback to the ECM. This feedback allows the ECM to appropriately control the throttle actuator and monitor the throttle opening angle as the ECM responds to driver inputs.

HINT:

This Electronic Throttle Control System (ETCS) does not use a throttle cable.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P2100-18	Throttle Actuator "A" Control Motor Circuit Current Below Threshold	Both of the following conditions are met for 2 seconds (1 trip detection logic): The throttle actuator drive duty cycle is 80% or higher. The throttle actuator current is less than 0.5 A.	Open or short in throttle actuator circuit Throttle actuator ECM	Comes on	DTC stored	SAE Code: P2102 DTC for Mexico Models: - Applies
P2100-19	Throttle Actuator "A" Control Motor Circuit Current Above Threshold	Either of the following conditions is met (1 trip detection logic): A motor driver IC high current limiter monitor input failure. A motor driver IC high current inhibit signal on.	Open or short in throttle actuator circuit Throttle actuator Throttle valve Throttle body with motor assembly ECM	Comes on	DTC stored	SAE Code: P2103 DTC for Mexico Models: - Applies