Possible Cause
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.
Malfunction is detected when closed throttle position learning value is excessively low. Possible cause is: defective TP sensor No. 1 and 2 (electric throttle control actuator).