What does the EPC indicator on the dashboard mean?

[StJourney]

The EPC indicator light can illuminate in two scenarios: during the power-on self-test and under other circumstances. The power-on self-test is an indication that the vehicle is checking the status of all sensors before driving. Typically, if the engine is not started after power-on, the light will turn off by itself after about 3 seconds. If the EPC light remains illuminated under other conditions or does not turn off for an extended period after the vehicle starts, the possible causes include faults in the engine intake system, throttle, fuel system, engine, ECU control unit, or brake lights. Here is a detailed explanation of the reasons for the EPC light illuminating under other conditions: Engine intake system fault: The EPC light will activate if the engine intake is obstructed or insufficient. Throttle fault: Carbon buildup is a common issue with the throttle. Additionally, dirt accumulation can affect intake and trigger the indicator light. Fuel system fault: Issues such as substandard fuel, fuel deterioration, or poor fuel atomization can cause the EPC light to illuminate. Engine fault: Insufficient engine pressure or problems with components like the intake valve in the powertrain can also trigger the EPC light. ECU control unit fault: For example, interference with the vehicle's computer signals or false alarms from the computer. Brake light fault: Situations like non-functional brake lights, faulty brake switches, or brake circuit issues can cause the EPC light to turn on. Solutions for when the EPC light illuminates: Troubleshoot intake system issues, use fuel with the appropriate octane rating, clean the throttle, etc. Remove carbon deposits from relevant components. Re-flash ECU-related data. If the EPC light comes on, the driver can first try turning off the engine and restarting it to see if the light remains on. If it does not, there may be no issue, and the EPC indicator might have been affected temporarily. If the light stays on or frequently illuminates, the vehicle should be taken to the nearest service center for professional diagnosis and repair to eliminate potential safety hazards. The full English name of EPC is Electronic-Power-Control, which translates to electronic power control. Most people refer to it as the engine electronic stability system. The EPC system primarily includes controllers and sensors related to the powertrain. When sensor data in the system is abnormal, the EPC system will take predefined measures for the powertrain. Common EPC indicator lights are usually displayed in two colors: yellow and red. A yellow EPC fault light indicates that the vehicle can still be driven, but it should proceed slowly to a repair facility. A red EPC fault light signifies a more serious issue, and the driver should pull over immediately and contact a repair technician. Continuing to drive with a red EPC light may directly affect the vehicle's core components or driving safety.