DTC P0226, DTC P0227, DTC P0228, DTC P1227 & DTC P1228: Accelerator Pedal Position Sensor
WARNING: This page is about a different car, the 2002 Nissan Maxima and 2002 Infiniti I35. However, it is still accessible from the selected car via links, so may be relevant.
ECM controls electronic throttle control actuator by regulating throttle opening in order for idle position to be within +10 degrees. ECM regulates an opening speed of about 5 seconds to an opening of 10 degrees. Therefore, acceleration will be poor.