LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2005 >> Sienna CE >> Repair and Diagnosis >> Engine Performance >> Engine Control System (SFI) - Diagnostics >> DTC P0121: Throttle/Pedal Position Sensor/Switch "A" Circuit Range/Performance Problem >> Circuit Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Circuit Description

Refer to DTC P0120  .

HINT:

This is the purpose of the "throttle position sensor".

DTC DETECTION CONDITION

DTC No. DTC Detection Condition Trouble Area
P0121 Condition (a) continues for 2.0 seconds:
(a) Difference between VTA1 and VTA2 deviates from the threshold
Throttle position sensor (built in throttle body)