What Does It Mean When the EPC Warning Light Comes On?

[LaGiselle]

When the EPC warning light illuminates in a vehicle, it indicates the following: 1. A steady EPC light typically signifies a fault in the engine management system or electronic control, often accompanied by symptoms like unstable idle speed or engine shaking during cold starts. For most Chinese car owners, this is usually caused by poor fuel quality or a dirty operating environment. It's recommended to drive to a service station for inspection as soon as possible. In most cases, cleaning the throttle body can resolve the issue. 2. The EPC indicator lights up during the functional check when the ignition is turned on. If this light comes on while driving, it indicates a malfunction in the engine's electronic power control system, requiring immediate engine inspection. Common causes include a dirty throttle valve body, vacuum leaks in the intake system, faulty brake switches, or overdue engine software upgrades. 3. There are two other possible reasons for EPC illumination. One is a dirty throttle body that needs cleaning; the other is non-functioning brake lights, which can be fixed by replacing bulbs or checking the brake switch and wiring.