What does the vehicle check light mean?

[DelMolly]

Vehicle check light is the engine malfunction indicator light, which is used to display the working condition of the vehicle's engine. Unlike specific indicator lights such as oil pressure light, brake fault light, or coolant temperature light, the engine malfunction light does not easily pinpoint a specific fault point, as many engine issues can trigger this warning light. Main causes for engine malfunction include: 1. Dirty throttle body or fuel injectors; 2. Excessive engine carbon buildup; 3. Leaks in the intake system, crankcase ventilation system, or secondary air system; 4. Clogged catalytic converter or damaged oxygen sensor; 5. Use of substandard fuel; 6. Poor combustion condition.