What should I do if the engine warning light of the Great Wall Pao is on?

[RachelAnn]

If the engine warning light is on, you can follow these steps: First, check whether the engine is running normally and whether there are problems such as shaking or black smoke. If so, try not to start it again. Special note: Do not start the engine if the red 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 car key halfway to the "on" position without pressing the clutch. After the car is powered on, the self-check function will activate. Wait for 5-10 seconds and 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 code, obtain fault information, and perform targeted repairs. There are mainly 7 reasons why the engine warning light may be on: Sensor failure: The sensors mentioned here include coolant temperature, crankshaft position, air flow, intake 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 may trigger the engine warning light. Fuel or oil quality issues: If fuel or engine oil is not added as required by the manufacturer, it may cause engine wear and trigger 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. Spark plug failure, ignition coil failure, fuel pump failure, or clogged fuel lines can all cause poor combustion of the air-fuel mixture. Turbocharger issues: Problems with the intake boost pipeline or turbocharger can also cause the engine warning light to turn on. The most common issue is turbocharger damage, which may also be accompanied by oil leaks, excessive oil consumption, reduced power, metallic noises, or blue/black smoke from the exhaust. Intake problems: If the car's intake system malfunctions, it may lead to clogged engine pipelines, and in severe cases, trigger the engine warning light. A dirty air filter that is not cleaned regularly can cause intake issues. Exhaust problems: Exhaust system faults can also cause the engine warning light to illuminate. Common causes include rear oxygen sensor failure, catalytic converter issues, or exhaust camshaft and bearing failure. The most frequent issue is with the catalytic converter, which can be damaged by using leaded gasoline, lead- or silicon-containing lubricant additives, physical impact, or fuel system malfunctions. Anti-theft system failure: If the car's electronic anti-theft system malfunctions or the anti-theft controller does not match the engine's electronic controller, the anti-theft system may prevent the engine from operating normally and trigger the warning light.