LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2005 >> Matrix XRS >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Control System (SFI) (2ZZ-GE) - Diagnostics >> SFI System (2ZZ-GE) >> 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 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT, DTC P0122 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT LOW INPUT, DTC P0123 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT HIGH INPUT .

P0121 - TROUBLE DETECTION CHART

DTC No. DTC Detection Conditions Trouble Areas
P0121 After vehicle speed exceeds 19 mph (30 km/h) once, TP sensor voltage output deviates from the standard range when throttle valve closed at 0 mph (0 km/h) on 4 occasions TP sensor (built into throttle body)
scientia non olet · About LEMON Manuals