Posts Tagged: p2138 trouble code

P2138 trouble code: What it means

Learn what a P2138 code means and how to fix the problem The P2138 trouble code is a diagnostic code that indicates an issue with the throttle/pedal position sensor/switch circuit. Specifically, it means a voltage correlation problem exists between the throttle position sensor (TPS) and the accelerator pedal position sensor (APP). In modern vehicles, the throttle is controlled electronically rather than mechanically. When you press the accelerator pedal, sensors detect this movement and send signals to the engine control module (ECM). The ECM then adjusts the throttle accordingly. The P2138 … Read More