EPC indicator light is on or flashing? The info!

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EPC Lamp LAMP Active Flashes

What can be the reason if the EPC indicator lamp lights up or flashes? We have summarized the possible causes and possible consequences in this article. But first, what is the EPC indicator light? EPC is the abbreviation for electronic power control and means something like electronic power control. If the EPC light comes on or flashes, it means there is a problem with the accelerator pedal. But not every vehicle has an electronic gas pedal (colloquially also E-Gas) installed. In such vehicles, of course, the EPC indicator light is omitted.

appearance and causes

EPC lamp LED Active Flashes 2 E1643375285889

The EPC indicator light is with the three letters EPC marked and thus clearly recognizable. She glows Yellow or Orangewhen it is active. In some cases, depending on the cause of the problem, it will light up along with the Engine control lamp. With an electronic gas pedal, the pedal position is constantly recorded by two potentiometers and transmitted to the engine control unit. However, if this registers incorrect values, it activates the EPC indicator light. In this way, the driver is warned in good time and can have the defect repaired. As already mentioned, older vehicles usually have no electronic accelerator. A Bowden cable is used here, which is a direct Connection between accelerator pedal and throttle valve manufactures. In this case, there is no EPC indicator light because the throttle valve is adjusted mechanically. The EPC indicator lamp may light up for the following reasons:

  • defective throttle potentiometer
  • defective brake pedal switch
  • defective throttle valve
  • defective clutch pedal switch
  • defective accelerator pedal potentiometer

We advise against continuing the journey!

When starting the vehicle, the EPC light should come on briefly and then come on again ausgehen. This ensures that the system is working correctly. If the light does not go out or stays on while driving, it should be replaced as soon as possible visit a workshopto determine the problem. If the EPC indicator light is ignored, the result can be that the engine no longer accepts gas and safe control of the vehicle is no longer guaranteed. That's hiring security risk for the driver and other road users. In the workshop, a diagnostic tester determine the exact cause of the problem and then fix the problem. Can you pass the main inspection with the EPC indicator light activated? Passing the main inspection is when the EPC indicator light is permanently on not possible.

The following note is essential: For safety reasons, tuningblog recommends all repair, inspection and maintenance work exclusively to be carried out in a specialist workshop! Although our information is summarized to the best of our knowledge and belief, we cannot assume any liability for the content. All information is therefore "without guarantee".

Of course, that wasn't the end of it!

In this tuningblog category there are guides and instructions for common defects/repairs on the vehicle and for installing accessories/tuning parts. Our articles explain in a simple way common defects and the corresponding repairs, as well as explaining how the first signs of a defect become noticeable. In most cases, we also have initial clues to the repair instructions in our repair instructions approximate The costs of the pending repair are listed. The goal of our subcategory “Auto Repair Guide“ is to create a head start in knowledge for the next visit to the workshop with initial tips. This may save you from tedious troubleshooting and small things can perhaps be done directly on your own. The same applies, of course, to the installation of accessories/tuning parts. Here, too, we would like to help with the implementation with instructions and tips. There are many other posts on this as well. Below is an excerpt of the last and HERE there are all previous instructions:

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