What is the fault when the EPC light is on in a Polo?

[Clarence]

When the EPC light is on in a Polo, it indicates an issue with the engine's power control management system. Below is an introduction to engine-related content: 1. Energy conversion: An engine is a machine capable of converting other forms of energy into mechanical energy, including internal combustion engines (reciprocating piston engines), external combustion engines (Stirling engines, steam engines, etc.), jet engines, electric motors, etc. For example, an internal combustion engine typically converts chemical energy into mechanical energy. 2. Device: An engine can refer to both the power generation device and the entire machine including the power unit (e.g., gasoline engines, aircraft engines). The engine was first developed in the UK, so the concept of an engine originates from English, with its original meaning referring to a 'mechanical device that generates power.'