DTC P0226: Accelerator Pedal Position Sensor Circuit Range/Performance Problem: Description

WARNING: This page is about a different car, the 2003 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

The Accelerator Pedal Position (APP) sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the ECM. APP sensor has 2 sensors. These sensors are a kind of potentiometer which transforms the accelerator pedal position into output voltage, and emits the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the accelerator pedal and feed the voltage signals to the ECM. The ECM judges the current opening angle of the accelerator pedal from these signals and controls the throttle control motor based on these signals. Idle position of the accelerator pedal is determined by the ECM receiving the signal from the APP sensor. The ECM uses this signal for the engine operation such as fuel cut.