What is the reason for the car displaying 'Check Engine System'?
2 Answers
When a car displays 'Check Engine System', it is typically due to engine stalling faults or idle speed malfunctions. Below are detailed explanations of the specific causes: Engine Stalling Fault: During engine operation, if the speed fluctuates erratically, this phenomenon is known as engine stalling. The causes of such erratic speed fluctuations can include faults in the fuel injection system, ignition control system, or even the intake system. Idle Speed Malfunction: When the engine operates normally at medium to high speeds but exhibits unstable idle speed or even stalls at idle or near-idle speeds, this is usually caused by issues in the intake system or fuel injection control system. Occasionally, mechanical faults in the engine can also lead to poor idle performance.
I've been driving for over a decade, and this 'Check Engine System' warning is quite common. It's mainly triggered by issues with various sensors in the vehicle. For example, an aging oxygen sensor giving inaccurate readings might think the engine isn't burning fuel efficiently and trigger an alert; worn spark plugs causing poor ignition; or dirty/clogged fuel injectors leading to poor fuel supply. Other possibilities include minor issues like faulty ignition coils or air intake system leaks. When this happens, I usually pull over, turn off the engine for a few minutes, then restart - sometimes minor temporary faults will clear themselves. However, I'd still recommend going to a repair shop as soon as possible to read the fault codes with an OBD device to identify the root cause before fixing. Don't delay addressing it, otherwise fuel consumption may increase or even damage the engine. For prevention, regular maintenance like changing oil filters and cleaning the throttle body can significantly reduce the chances of occurrence. Safety first!
