What Causes the Aoling Engine Malfunction Light to Illuminate?
1 Answers
Sensor issues, car maintenance problems, fuel quality problems, poor mixture combustion, engine intake problems, turbocharging issues, exhaust problems, and anti-theft system malfunctions are the main reasons that cause the vehicle's engine malfunction light to illuminate. In addition, when the car is started, the vehicle will perform a self-check on the engine system. Normally, the engine malfunction light will turn off after the self-check is completed. If it remains on for an extended period, it is advisable to promptly visit a repair station for professional assistance to diagnose and eliminate potential safety hazards. Below is a detailed explanation of each type of fault: Sensor Problems: Sensors include those for coolant temperature, crankshaft position, air flow, intake temperature, and oxygen. When these sensors are damaged, have poor contact, or experience signal interruptions, the vehicle's ECU cannot accurately obtain engine data, causing the engine malfunction light to illuminate. In such cases, it is essential to visit a repair center for professional diagnosis and timely resolution of safety risks. Maintenance Issues: Poor engine maintenance is the most common cause of the engine malfunction light illuminating. Vehicles have specific maintenance cycles, and failing to adhere to them, combined with poor driving habits, can increase the burden on the engine. Eventually, the vehicle's engine malfunction light will illuminate to alert the owner of a problem. Fuel Quality Issues: This refers to both fuel and engine oil. The fuel used in cars typically has a specific grade, and engine oil can be semi-synthetic or fully synthetic. Manufacturers usually recommend which fuel grade and type of engine oil to use. If the owner fails to follow these recommendations, prolonged use can lead to engine wear, triggering the malfunction light. Always use the recommended fuel grade and appropriate engine oil for the vehicle. Poor Mixture Combustion: Faulty spark plugs, ignition coils, fuel pumps, or clogged fuel lines can cause poor mixture combustion in the engine. This leads to engine carbon buildup or knocking, which the oxygen sensor detects and reports to the ECU, prompting the malfunction light to illuminate as a warning. Intake Problems: The engine requires air for combustion, and the air filter plays a crucial role in this process. If the air filter is dirty or not cleaned regularly, it can affect the engine's air intake. Over time, this can lead to blockages and, in severe cases, cause the engine malfunction light to illuminate. Turbocharging Issues: Problems with the intake turbocharging pipeline or turbocharger can also cause the engine malfunction light to illuminate. The most common issue is a damaged turbocharger, accompanied by symptoms such as oil leaks, excessive oil consumption, reduced power, metallic noises, or blue/black smoke from the exhaust. Exhaust Problems: Faults in the rear oxygen sensor, catalytic converter, exhaust camshaft, or bearings can trigger the engine malfunction light. The most common issue is a faulty catalytic converter, often caused by using leaded gasoline, lead- or silicon-based lubricant additives, physical damage to the catalytic converter, or fuel system malfunctions. Anti-Theft System: If the car's electronic anti-theft system malfunctions or the anti-theft controller is incompatible with the engine's electronic controller, the anti-theft system can prevent the engine from operating normally, causing the malfunction light to illuminate. Solutions for the Engine Malfunction Light: If the engine malfunction light is on and the car cannot start, this may be due to a faulty fuel pump or ignition components. It is recommended to call for assistance immediately. If the engine malfunction light is on and the vehicle can still be driven but exhibits severe shaking or loss of power, pull over safely and call for roadside assistance. If the engine malfunction light is on but the vehicle operates normally, this may indicate a minor sensor issue. In this case, you can continue driving cautiously at low to moderate speeds but should visit a repair shop as soon as possible to address the issue.
