What does it mean when the EPC light on the dashboard is on?

[DiKendra]

The EPC indicator light can illuminate in two states: during the power-on self-test and under other circumstances. The power-on self-test is an indication that the vehicle is monitoring the status of all sensors before driving. Generally, if the engine is not started after power-on, the light will turn off by itself after about 3 seconds. In other cases, if the EPC light remains on after the vehicle is started, the main causes for the EPC light staying on include faults in the engine intake system, throttle valve issues, fuel system problems, engine malfunctions, ECU control unit failures, or brake light faults. Below is a detailed explanation of the reasons for the EPC light illuminating in other cases: Engine intake system fault: The EPC light will alert when the engine intake is obstructed or insufficient. Throttle valve fault: Carbon buildup is a common issue with the throttle valve. Additionally, dirt accumulation can affect intake, causing the indicator light to illuminate. Fuel system fault: Examples include substandard fuel, fuel deterioration, or poor fuel atomization. Engine fault: Insufficient engine pressure or issues with the intake valves and other powertrain components can also trigger the EPC light. ECU control unit fault: For instance, interference with the vehicle computer signals or false alarms from the vehicle computer. Brake light fault: Situations such as brake lights not working, faulty brake switches, or brake circuit issues. Solutions for when the EPC light comes on: Troubleshoot intake system issues, use fuel with the appropriate octane rating, clean the throttle valve, etc. Remove carbon deposits from relevant parts. Re-flash ECU-related data. If the EPC light comes on, the owner can first try turning off the engine and restarting it to check if the EPC light remains on. If it does not illuminate again, there may be no issue, possibly just the EPC light being affected. If the EPC light stays on or frequently illuminates, drive to the nearest service point for professional assistance in diagnosing and resolving the fault to eliminate safety hazards promptly. The full English name of EPC is Electronic-Power-Control, which translates directly to electronic power control. Most people refer to it as the engine electronic stability system. The EPC system mainly includes controllers and sensors related to the powertrain. When sensor data in the system is abnormal, the EPC system will take predefined actions on the powertrain. Common EPC indicator lights generally display two colors: yellow and red. If the EPC fault light is yellow and the car can still drive normally, proceed slowly to a repair point for inspection. If the EPC fault light is red, the situation is more severe. Pull over immediately and contact a repair technician right away. Continuing to drive could directly affect the vehicle's core components or driving safety.