How to handle P2138 trouble code?

[GageMarie]

P2138 trouble code indicates an issue with the vehicle's throttle or accelerator pedal sensor, which requires repair at a service center or 4S shop followed by clearing the trouble code. Below are repair methods for different causes of P2138 trouble code: 1. Throttle malfunction. When the throttle malfunctions, the vehicle may exhibit symptoms such as engine shaking, unstable idle, weak acceleration, and difficulty starting when cold. In this case, the throttle needs to be thoroughly cleaned, especially removing any oil sludge attached to it. If the throttle is damaged, it should be replaced promptly. 2. Accelerator pedal sensor issue. When the accelerator pedal malfunctions, the vehicle may show symptoms like weak acceleration, severe jerking, and failure to move when accelerating. The accelerator pedal sensor needs to be inspected, and it's also important to use high-quality fuel in daily use. 3. After the repair is completed, the trouble code must be cleared promptly; otherwise, it may cause memory disorder in the vehicle's electronic system.