You are driving your car, and suddenly the EPC light displays (often together with the engine light) on your dashboard.
Will it damage my engine? Is it dangerous to drive with? How much will it cost to repair my car?
There are many questions you might want to know the answer to regarding the EPC light right now.
In this article, you will learn everything you need to know about the EPC light on your VW or Audi.
What does the EPC light mean?
The EPC warning light is a warning light that indicates a problem with your throttle system, including the throttle body, accelerator pedal, cruise control, or traction control.
The Volkswagen EPC light often shows up together with the Engine, ABS, or ESP Light, depending on where the problem is located.
The Electronic Power Control system is controlled by the engine control unit, brake control unit, transmission control unit, and steering control unit.
Several car models and brands are equipped with the EPC system, especially Volkswagen cars, because they manufacture the system.
Volkswagen owns many different car brands, and because of this, you may also find the EPC light in your Audi, Skoda, or Seat.
Common EPC Light Causes
The most common causes of a EPC light on your Audi or VW is a faulty throttle body, a faulty ABS sensor, ABS ring or a faulty brake pedal switch.
Here is a more detailed list of possible causes of the EPC Light.
- Throttle body failure
- Bad ABS Sensor – Common on newer VW Passats
- Failed brake pedal switch – Common problem on Golf 4 & Fabia
- Bad ABS Ring
- Bad ABS sensor wiring
- A failed brake pressure sensor (Inside the ABS Module)
- A Bad Engine Sensor
- Internal engine problem
- Power steering failure
- Steering wheel sensor
- Wiring issues
RELATED: VSC Light – Meaning & Causes
How to fix the EPC light
The easiest way to fix your EPC light is to start with checking what the trouble codes in the engine control module or ABS control module tell us.
When the EPC light is on, it means that there are one or several trouble codes stored in one of the control units.
You have to scan the engine control unit, ABS control unit, steering control unit, and transmission control unit for any stored trouble codes.
You can either drive your car to a mechanic workshop and let them read your trouble codes, or you could to it at home with your own OBD2 scanner.
The cheapest diagnostic scanners are only able to read the engine control unit. Because this problem could appear in several control units, it’s recommended to either get a more advanced diagnostic scanner or let a workshop read the other control units’ codes.
Is it dangerous to drive with the EPC light on?
You should always fix your EPC light as soon as possible. When the EPC light is on, it means that there may be several limited functions in your car.
Since the EPC light is integrated with the steering and brake system, it could cause engine damage and also cause serious accidents because of limited brake or steering functions.
When the EPC light appears on your dashboard, you should drive to the closest mechanic workshop for them to take a look at it as soon as possible.
The EPC Light is often limiting your car’s engine power and other functions to drive slowly to the closest mechanic workshop without issues.
In most cases, the EPC light won’t cause damages to your car if you are driving carefully – but there is a chance that the problem is more serious, and it’s better to be safe than sorry.
What Is the EPC Light on a Volkswagen or Audi?
The EPC warning light on your Volkswagen or Audi means that there is a problem with the EPC (Electric Power Control) system. The EPC system controls the throttle control, including the throttle body, accelerator pedal, cruise control, or traction control
Can the EPC Warning Light Cause a Loss of Power?
Yes the EPC light controls the throttle system and can therefore cause a sudden loss of power. In some cases, you can not rev up the engine at all when the EPC light appears.
What Can Cause the EPC Light To Come On?
The EPC light can be caused by anything related to the throttle system like a faulty throttle body, accelerator pedal, cruise control or a problem with the traction system or the ABS.
How much does it cost to fix EPC light?
There is no fixed price to fix an EPC light because different things can cause it. In most cases, it will cost anything between 100$ to 400$ to fix the EPC light, but it can be more expensive in some cases.
How do I fix my EPC light?
To fix the EPC light, you need to read the trouble codes with an OBD2 scanner. Once you know what the trouble codes are telling you, you need to continue the troubleshooting with these codes. Just guessing the problem will just waste your money.
Hi, I’m Magnus, the owner and the writer of Mechanic Base. I have been working with cars for 10 years, specialized in diagnostics and troubleshooting. I created this blog because I was tired of finding false information on the web while looking for repair information. I hope you enjoy my content!