What does the Nissan Sylphy P2138 accelerator pedal position mean?

[OLillian]

The Nissan Sylphy P2138 trouble code indicates an issue with the car's throttle or accelerator pedal sensor. The causes of the Nissan Sylphy P2138 trouble code are as follows: Throttle malfunction: When the throttle malfunctions, the vehicle may exhibit symptoms such as engine shaking, unstable idle, lack of power when accelerating, and difficulty starting when cold. In this case, the throttle should be cleaned again, especially removing the oil sludge attached to the throttle. If the throttle is damaged, it should be replaced promptly. Accelerator pedal sensor issue: When the accelerator pedal malfunctions, the vehicle may show symptoms such as weak acceleration, severe jerking, and failure to move when pressing the accelerator. In this situation, the accelerator pedal sensor should be inspected, and high-quality fuel should be used daily. After the car is repaired, the trouble code should be cleared promptly; otherwise, it may cause memory confusion in the vehicle's electronic system, leading to unnecessary trouble later.