What Causes the Engine Warning Light to Illuminate in Chery Fengyun 2?

[ORowan]

There are primarily 7 reasons why the engine warning light in Fengyun 2 may illuminate: Sensor malfunction: The sensors mentioned here include coolant temperature, crankshaft position, air flow, intake air temperature, oxygen sensors, etc. When these sensors are damaged, have poor contact, or experience signal interruption, the car's ECU cannot accurately obtain engine data, which triggers the engine warning light. Fuel 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 deposits or knocking. Once detected by the oxygen sensor and reported to the ECU, the warning light will illuminate as a warning. Spark plug failure, ignition coil failure, fuel pump failure, and fuel line blockage can all cause poor combustion of the engine's air-fuel mixture. Turbocharging issues: The intake turbocharging pipeline and turbocharger can also cause the engine warning light to illuminate. The most common issue is turbocharger damage, accompanied by symptoms such as oil leakage, high oil consumption, reduced power, metallic noises, and blue or black smoke from the exhaust pipe. Intake issues: If there is a problem with the car's intake, it may lead to engine pipeline blockage, and in severe cases, cause the engine warning light to illuminate. A dirty air filter that is not cleaned regularly can lead to intake problems. Exhaust issues: Exhaust faults can also cause the engine warning light to illuminate. The rear oxygen sensor, catalytic converter, exhaust camshaft, and bearing failures are all causes of exhaust problems, with the catalytic converter being the most common. Using leaded gasoline, lead or silicon-containing lubricant additives, physical damage to the catalytic converter, or fuel supply system failures can easily lead to catalytic converter issues. Anti-theft system malfunction: If the car's electronic anti-theft system malfunctions or if the anti-theft controller does not match the engine electronic controller, the anti-theft system can also prevent the engine from operating normally, while the engine warning light illuminates. If the engine warning light illuminates, follow these steps: First, check if the engine is running normally, whether there is shaking, black smoke, etc. If such issues exist, avoid restarting the engine. Particularly, do not restart the engine if the red warning light is on. If the engine can be started, turn it off for 5-10 minutes, then without pressing the brake, press the start button once or turn the key halfway to the 'on' position without depressing the clutch. The car will initiate a self-check function upon powering up. After 5-10 seconds, observe whether the warning light on the dashboard turns off. If the warning light does not turn off, visit a service station as soon as possible to identify the cause. The service station can use a portable diagnostic tool to read the fault codes, obtain fault information, and perform targeted repairs.

[LeDaniel]

Speaking of the engine warning light coming on, as a Chery Fulwin 2 owner for several years, I think there are several common causes. It could be an issue with the oxygen sensor, which monitors exhaust emissions - if it gets dirty or fails, the light tends to illuminate. Another possibility is fuel system blockage, like excessive carbon buildup in fuel injectors preventing proper fuel supply and making the engine run unstable. Also, ignition system faults such as aging spark plugs causing difficult ignition can trigger the warning. Vacuum hose leaks are another frequent problem - loose connections allowing air leaks can affect the air-fuel mixture ratio. Emission system malfunctions like reduced catalytic converter efficiency can also easily trigger the light. If these faults persist, they may affect fuel consumption and power, so I recommend getting it checked promptly. Regular maintenance like periodic spark plug replacement and fuel system cleaning can prevent many issues.