You drive your car, and suddenly, the EPC light (often together with the engine light) appears 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 regarding the EPC warning light because it is a common cause for concern, as it often means there is an issue with the car.
It’s not always easy to find out how serious that issue is, though. The first thing we need to do is figure out if there is an issue with your car or a false alarm. Once we’ve figured that out, we can look at some fast fixes for common problems with the EPC system in VW and Audi cars (including Jettas, Passats, Golfs & Touaregs).
What is the EPC light?
The Electronic Power Control (EPC) warning light indicates a problem with your throttle system, including the throttle body, accelerator pedal, cruise control, or traction control.
The EPC light often shows up with the Engine, ABS, or ESP Light, depending on where the problem is.
The Electronic Power Control system is monitored by the engine control unit, brake control unit, transmission control unit, and steering control unit.
Several car models and brands have the EPC system, especially Volkswagen cars, because they manufacture the system. Volkswagen owns many car brands, and because of this, you may also find this warning light in your Audi, Skoda, or Seat.
Common EPC Light Causes
The most common causes of an EPC light showing up on your Audi or VW are a faulty throttle body, a faulty ABS sensor, a cracked ABS ring, or a faulty brake pedal switch.
Here are a few of the issues that could trigger 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
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How to fix the EPC light
The easiest way to fix the EPC issue is by checking the trouble codes in the engine control module or ABS control module with an OBD2 Scanner.
When the EPC warning light is on, it means 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 take your car to a mechanic to let them read the trouble codes or you could get to it at home with your own OBD2 scanner.
The cheapest diagnostic scanners can only 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.
If the EPC light is showing on your dashboard, but the car is running perfectly fine, you can try to perform a VW EPC light reset with an OBD2 scanner to see if the light comes back. It could be a temporary issue if it doesn’t show up again, but you have to repair the problem if it comes back.
When the light is showing up, it means that there is an occurring issue right now.
Is it dangerous to drive with the EPC light on?
Always fix the EPC issue as soon as possible. When the light is on, it means there may be several limited functions in your car.
Since the EPC is integrated with the steering and brake system, it could cause engine damage and cause serious accidents because of limited brake or steering functions.
When this light appears on your dashboard, drive to the closest mechanic workshop for them to consider it as soon as possible.
The EPC light often limits your car’s engine power and other functions to drive slowly to the closest mechanic workshop without issues.
Usually, the EPC issue won’t cause damages to your car if you are driving carefully – but maybe 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 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 warning light controls the throttle system and can cause a sudden power loss. Sometimes, you can not rev up the engine at all when the light appears.
How much does it cost to fix the EPC light?
There is no fixed price to fix the EPC light because different things can cause it. Usually, it will cost anything between $100 to $400 to fix the EPC light, but sometimes it can be more expensive.
How do I fix my EPC light?
To fix the VW 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 troubleshooting these codes. Just guessing the problem will only waste your money.