DTC P2121: Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance [11/2016 - ]: Description

WARNING: This page is about a different car, the 2019 Toyota Highlander, 2018 Toyota Highlander, and 2017 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.

Refer to DTC P2120.

Refer to DTC P2120: Throttle / Pedal Position Sensor / Switch "D" Circuit; DTC P2122: Throttle / Pedal Position Sensor / Switch "D" Circuit Low Input; DTC P2123: Throttle / Pedal Position Sensor / Switch "D" Circuit High Input; DTC P2125: Throttle / Pedal Position Sensor / Switch "E" Circuit; DTC P2127: Throttle / Pedal Position Sensor / Switch "E" Circuit Low Input; DTC P2128: Throttle / Pedal Position Sensor / Switch "E" Circuit High Input; DTC P2138: Throttle / Pedal Position Sensor / Switch "D" / "E" Voltage Correlation [11/2016 - ]

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory
P2121	Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance	Either of the following conditions is met (1 trip detection logic): Difference between VPA and VPA2 is less than 0.4 V, or higher than 1.2 V. (learned value of accelerator off position) Difference between VPA and VPA2 is greater than or equal to the specified value.	Accelerator pedal sensor assembly ECM	Comes on	DTC stored