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What is the reason for sudden loss of power when stepping on the accelerator and the EPC light coming on?

1 Answers

LaCarter

07/30/25 10:03am

The reason for sudden loss of power when stepping on the accelerator and the EPC light coming on is excessive carbon buildup in the throttle body, causing issues with its opening angle. Below are relevant details: Composition of EPC: EPC stands for Electronic Power Control, commonly known as the electronic throttle system. This system mainly consists of the engine control unit, engine wiring harness, throttle body, accelerator pedal, brake switch, and clutch switch for manual transmissions. Solutions when EPC light comes on: You can stop the vehicle, turn off the ignition, and then restart the engine. If the warning light goes out, it indicates an intermittent fault, and you can continue driving. However, you should take the vehicle to a repair facility as soon as possible. If the warning light remains on after restarting the engine, it means the fault persists. You can try idling or driving at low speed. If there's no response when pressing the accelerator, it's recommended to avoid driving the vehicle further.

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