Why is there no response when pressing the accelerator pedal?

1 Answers
VanPreston
07/30/25 9:07am
Here are the reasons for no response when pressing the accelerator pedal: 1. Transmission failure: The transmission is relatively easy to diagnose. If there's an issue with the transmission mechanism, the accelerator pedal cannot be pressed down, and the engine speed will suddenly increase from 2000 rpm to 4000 rpm. Because the power is cut off, the engine suddenly has no load, causing speed fluctuations. Common engine problems include transmission control system failures, which will trigger the engine warning light. The fault light definitely stores an error code, which can be read using a diagnostic tool. 2. Throttle body: Throttle body malfunction. 3. Accelerator pedal: Accelerator pedal failure. 4. Brake override system: Modern vehicles are equipped with a brake override system. When both the brake pedal and accelerator pedal are pressed simultaneously, the brake pedal takes priority, and the accelerator will not respond. Check if the floor mat is properly secured. If the mat accidentally touches the brake pedal, even slightly, it may generate a brake signal, potentially activating the brake override system.
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