What does 'Please Check Engine Control System' mean?

[Erik]

It indicates that there may be a fault in the engine, and a diagnostic tool is required to read the fault codes for further diagnosis and repair based on the codes. Engine Electronic Control System: 1. Ignition Control: This system determines the engine's operating conditions and status based on signals from relevant sensors, selects the optimal ignition timing to ignite the air-fuel mixture, thereby improving the combustion process to enhance engine performance, fuel efficiency, and reduce emissions. 2. Idle Speed Control: This is an auxiliary control system of the engine. Its function is to control the engine's air intake via the idle speed control valve during idle conditions, based on factors such as engine coolant temperature, whether the air conditioning compressor is operating, and whether the transmission is engaged, ensuring the engine operates at the optimal idle speed at all times. 3. Emission Control: Its primary function is to electronically control the operation of the engine's emission control devices. Emission control measures mainly include: Exhaust Gas Recirculation (EGR) control, charcoal canister solenoid valve control, oxygen sensor and air-fuel ratio closed-loop control, secondary air injection control, etc.