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What to do when the EPC light comes on?
Model: (Various brands) Various
The EPC light is a warning from the "Electronic Power Control" system that manages the engine's power supply. The EPC light can illuminate in various situations: while driving, during startup, or during acceleration, etc. The most common scenarios for an illuminated EPC light and their possible causes are: – stationary and the car won't start: possible issue with the glow plugs or fuel pressure; – illuminated while driving: likely error in the readings from the accelerator position/throttle body sensors or in the engine wiring; – illuminated during acceleration: generally linked to a faulty accelerator. However, only by taking the car to a service centre for a diagnosis can the problem be clarified.
Updated on 10 July 2026 by ScegliAuto
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Frequently Asked QuestionsHow to Open a Stuck Boot on the Peugeot 407?
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