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DTC P2121: Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance: Description

Refer to DTC P2120 (see 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 ).

DTC DETECTION CONDITION CHART

DTC No.	DTC Detection Condition	Trouble Area
P2121	Difference between VPA and VPA2 is less than 0.4 V, or more than 1.2 V for 0.5 seconds (1 trip detection logic)	Accelerator pedal position sensor ECM