Often you need to replace the entire ABS control module if there is a problem with the sensor, which can be very expensive.
Unfortunately, the brake pressure sensor on many VW models is located inside the ABS control module, making it quite difficult to replace. The brake pressure sensor works like the brake light switch, but it doesn’t just measure ON/OFF, it actually measures the brake pressure you apply through the brake pedal. If you have a Volkswagen car and an EPC light on your dashboard, there is a high risk that the brake pressure sensor has failed. READ MORE: 4 Signs of a Bad ABS Wheel Speed Sensor (Replacement Cost) 4. It can also be an issue with the ABS reluctor ring, from which the ABS sensor is measuring the speed from. The ABS sensors are located on the wheel hubs and are very exposed to dirt, rust, and water – and are therefore prone to failure. It uses this information mainly for the ABS system, but there are other systems that use this information and the EPC system is one of them.
The ABS sensors measure the speed of each wheel on your car. READ MORE: 5 Symptoms of a Bad Brake Light Switch (& Replacement Cost) 3. If there is a problem with the brake pedal switch, the EPC system will not be able to recognize when you press the brake pedal or not, and therefore it will illuminate the EPC light and store a fault code. The switch is also used for other functions such as the cruise control system or the EPC system. The brake pedal switch or brake light switch is used to know when you press the brake pedal, so the car should activate the brake lights. RELATED: 8 Symptoms of a Bad Throttle Body (& Replacement Cost) 2. Most throttle bodies today are electric, and if there is a problem with it, it will light up a check engine light and an EPC light on your dashboard. The EPC system uses the throttle body to control the engine power, and if there is an issue with the throttle body, the EPC system will not be able to function properly. The throttle body controls how much air should enter the engine when you press the gas pedal. Here are a few of the issues that could trigger the EPC light: 1. It can also be caused by wiring issues or other electrical issues.
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The most common causes of an EPC light are a faulty throttle body, a faulty ABS sensor, a cracked ABS ring, a bad brake pressure sensor, or a faulty brake pedal switch. RELATED: How Many Car Brands Does Volkswagen Own? What Causes An EPC Light?
The EPC system is Volkswagen Group’s traction control system, and therefore you will also find the EPC system in Audi, Skoda and Seat car models. The Electronic Power Control system is monitored by the engine control unit, brake control unit, transmission control unit, and steering control unit. The EPC light often shows up together with the Engine, ABS, or ESP Light, depending on where the problem is. When this light comes on, it usually means there is an issue with the car’s throttle system. The EPC light is a warning light that indicates a problem with your vehicle’s electronic power control (EPC) system. Learn more: What does the EPC Light mean?
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