What is the fault when the EPC light comes on in the Lavida?
2 Answers
There are three main reasons why the EPC light comes on in the Lavida: 1. The EPC warning light staying on indicates a fault in the engine management system or electronic control, often accompanied by unstable idling or cold start engine vibrations. For domestic car owners, this is usually caused by the quality of domestic fuel and a dirty driving environment. It is recommended to visit a maintenance service station for inspection. Normally, cleaning the throttle body can resolve the issue. 2. The EPC indicator light will illuminate when the ignition switch is turned on for a functional check. If this light comes on while driving, it indicates a fault in the engine's power electronic control system, and the engine must be checked immediately. Possible causes include a dirty throttle valve body, vacuum leaks in the intake system, a faulty brake switch, or an overdue engine upgrade. 3. Another scenario where the EPC light comes on is when the brake lights are not working. In this case, replace the bulb or check the brake switch and wiring.
I have repaired many Lavida models with EPC light issues. Common faults include throttle pedal position sensor failure, carbon buildup in the throttle body causing jamming, or loose wiring harness connections leading to signal interruption. Sensors are prone to short circuits when aged or exposed to humid environments, while prolonged use without cleaning the throttle body can lead to sludge buildup, affecting opening and closing precision. Additionally, engine control module software bugs or insufficient power supply may also trigger the light. Symptoms typically include limited power, weak acceleration, or unstable idling, which must be addressed promptly. It is recommended to first check the fuses and pedal interface after parking. If the issue persists, take the car to a 4S shop for a system diagnosis. The Lavida model is more prone to this problem in humid urban areas, and delaying repairs may cause more significant damage.
