Analysis of Reasons for the Illumination of the Engine Warning Light in Geely Vehicles

[MacFelix]

There are primarily 7 reasons for the illumination of the engine warning light: Sensor malfunction: The sensors mentioned here include those for coolant temperature, crankshaft position, air flow, intake air temperature, and oxygen sensors. When these sensors are damaged, have poor contact, or experience signal interruption, the vehicle's ECU cannot accurately obtain engine data, which triggers the illumination of the engine warning light. Fuel and oil quality issues: If fuel and engine oil are not added as required by the manufacturer, it may cause engine wear, leading to the illumination of the warning light. Poor combustion of the air-fuel mixture: Poor combustion can lead to engine carbon buildup or knocking. When detected by the oxygen sensor and reported to the ECU, the warning light will illuminate as a warning. Issues such as spark plug failure, ignition coil failure, fuel pump failure, or fuel line blockage can all cause poor combustion of the air-fuel mixture. Turbocharging issues: Problems with the intake boost piping or turbocharger can also cause the engine warning light to illuminate. The most common issue is turbocharger damage, accompanied by symptoms such as oil leaks, excessive oil consumption, reduced power, metallic noises, or blue/black smoke from the exhaust. Intake issues: If there are problems with the vehicle's intake, it may lead to engine pipe blockages, and in severe cases, trigger the engine warning light. A dirty air filter that is not cleaned regularly can cause intake problems. Exhaust issues: Exhaust faults can also cause the engine warning light to illuminate. Common causes include faults in the rear oxygen sensor, catalytic converter, exhaust camshaft, and bearings, with the catalytic converter being the most frequent issue. The use of leaded gasoline, lead or silicon-based lubricant additives, physical damage to the catalytic converter, or faults in the engine fuel supply system can easily lead to catalytic converter failure. Anti-theft system malfunction: If the vehicle's electronic anti-theft system malfunctions or if the anti-theft controller does not match the engine electronic controller, the anti-theft system can prevent the engine from operating normally, and the engine warning light will illuminate. If the engine warning light is illuminated, follow these steps: First, check if the engine is operating normally, looking for issues such as shaking or black smoke. If such issues are present, avoid restarting the engine. Note: Under no circumstances should the engine be restarted if the red warning light is on. If the engine can be started, turn it off and wait for 5-10 minutes. Without pressing the brake, press the start button once or turn the key halfway to the 'on' position without depressing the clutch. The vehicle will perform a self-check after powering on. Wait for 5-10 seconds and observe whether the warning light on the dashboard turns off. If the warning light remains on, visit a service station as soon as possible. The service station can use a portable diagnostic tool to read the fault codes, identify the issue, and perform targeted repairs.

[ValeriaDella]

Last time when I was driving the Geely Boyue, the engine light suddenly came on. I rushed to the repair shop for a check and found it was an oxygen sensor issue. The mechanic said such situations are quite common, like poor fuel quality causing incomplete combustion, clogged fuel injectors, or aging spark plugs triggering the warning light. Another time, a friend's car had the light on due to excessive carbon buildup in the throttle body, which cleared after cleaning. I'm particularly careful about regular maintenance, using genuine engine oil and filters, since engine core component repairs can easily cost thousands. A reminder to everyone: if the light comes on accompanied by shaking or poor acceleration, it's safest to pull over immediately and call the after-sales service.

[CoraDella]

I've fixed many Geely vehicles with illuminated engine warning lights, mostly for minor issues. For example, something as simple as a loose fuel cap - just tightening it and driving a few kilometers will turn off the light. For proper troubleshooting, first check the sensors - faulty oxygen sensors or MAF sensors are common problems. Then examine the ignition system - a burned-out ignition coil means no spark signal. Finally, inspect the fuel system - clogged injectors or insufficient fuel pump pressure could be the cause. I recommend keeping an OBD scanner in your car. For just a few dozen yuan, plugging it in can read trouble codes, which is much more reliable than guessing blindly.