LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2007 >> RX 350 FWD >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> SFI System >> DTC P0121 Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance Problem >> Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC P0121 Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance Problem: Description

Refer to DTC P0120  .

DTC TROUBLE DETECTION CONDITION CHART

DTC No. DTC Detection Condition Trouble Area
P0121 Difference between VTA1 and VTA2 voltages less than 0.8 V, or more than 1.6 V for 2 seconds (1 trip detection logic) TP sensor (built into throttle body)