My car is a 2012 Buick Yinglang XT, and the engine failure light has been on all this time, and the

This car loves to lack cylinders and burn ignition coils! See for yourself!

Idle jitter can view the pointer fluctuation of the idle speed meter, the general performance is not good combustion, if it is a new car, there will be no problem of damage to idle components, because the combustion requirements of the turbo direct injection vehicle are very engaged, or clean the oil circuit first, before the idle pointer fluctuation idle jitter in the fuel tank after adding Si Youpu fuel additives to run two tanks of oil is completely good.

Have you used the computer to test any faults, clear the fault code to see if it will be better!

The question is that it's the same as the little plane.

Check at the nearest repair shop.

If the engine fault light turns on and off, it is due to insufficient combustion of the engine mixture due to substandard fuel quality. In this case, after refueling, add some better quality fuel additives or choose the best fuel station to achieve the purpose of improving the quality of fuel.

The quality of gasoline is poor, and it is estimated that most car owners have this experience, and soon after the car is refueled, the engine failure light is lit on the car dashboard; This is generally due to the addition of poor quality gasoline at non-standard gas stations, resulting in insufficient combustion of the oil-gas mixture and the engine fault light when the engine is working. This will not affect driving safety, but it will be more or less harmful to the engine. Oxygen sensor failureNowadays, there are two oxygen sensors installed in the car, one at the front and one at the front and one at the front of the three-way catalytic converter.

The function of the front oxygen sensor is to detect the air-fuel ratio of the engine under different working conditions, while the ECU computer adjusts the fuel injection amount and calculates the ignition time according to this signal. The rear is mainly to detect the working of the three-way catalytic converter! Therefore, if the oxygen sensor is damaged or the sensor plug is damaged or loose, the mixture will be too thin or too thick, which will cause the fault light to turn on.

Air Flow Sensor FailureThe air flow sensor, also known as the air flow meter, detects the amount of air inhaled and converts it into an electrical signal to be transmitted to the ECU, which indirectly allows the ECU to decide how much fuel to spray according to the optimal air-fuel ratio. If the air flow sensor or wiring fails, the ECU will not be able to get the correct intake volume signal and will not be able to control the fuel volume properly, resulting in mixing.

All of these are likely to occur.

Reasons for the engine failure light: 1. The sensor is damaged, the contact is poor or the signal is interrupted; 2. Poor engine maintenance; 3. The quality of fuel and oil is not good; 4. The combustion of the mixture is insufficient; 5. Spark plug failure, ignition coil failure; 6. The fuel pump is faulty and the oil circuit is blocked; 7. The air conditioner filter is blocked.

1. Sensor problems; The sensors mentioned here include water temperature, crankshaft position, air flow, intake air temperature, oxygen sensor, etc., when these sensors are damaged, poor contact or signal interruption, the ECU of the car can not accurately obtain the engine data, at this time it will cause the engine fault light to turn on. 2. Maintenance problems; Poor engine maintenance is the most common cause of engine failure to light up. We know that the vehicle has a certain maintenance cycle, if the owner does not maintain on time, coupled with bad driving habits, then it will increase the burden of engine operation, and finally can only remind you through the fault light to care about your car 3, oil quality problems; The oil quality here includes fuel and engine oil, we know that the fuel filled by the car is generally marked, and the engine oil is also semi-synthetic and fully synthetic, the manufacturer will generally recommend the owner to use which grade of fuel, which type of engine oil, if the owner does not add as required, it will cause wear and tear of the engine in the long run, and the fault light is not to blame.

Poor combustion of the mixture; The failure of the spark plug, ignition coil, fuel pump, and oil circuit blockage of the engine will cause poor combustion of the engine mixture. Poor combustion of the mixture is caused by the problem of engine carbon deposition or knocking, and these will eventually be detected by the engine's oxygen sensor and reported to the ECU, which will naturally turn on the fault light to warn of the intake air intake problem; When the engine burns, it needs to take intake, the air filter element is very important in this process, if the air filter element of the car is not clean, it will affect the air intake of the car if it is not cleaned regularly, and it will be blocked for a long time, and if it is serious, it will cause the engine failure light to turn on. pressurization issues; Intake booster lines and turbochargers can also cause engine failure lights to illuminate.

The most common of these is turbocharger damage, while the vehicle can also experience symptoms such as oil leakage, high oil consumption, loss of power, metal noise, and blue or black smoke from the exhaust pipe. 7. Exhaust problems; Rear oxygen sensor, three-way catalytic converter, exhaust camshaft and bearing. The most common of these is a failure of the three-way catalytic converter that causes the engine failure light to illuminate.

The use of leaded gasoline, the use of leaded or silicone lubricant additives, the bump of the three-way catalytic converter, and the failure of the engine oil supply system are some of the factors that can easily cause the failure of the three-way catalytic converter. anti-theft system; If the car's electronic immobilizer fails, or if the immobilizer does not match the engine electronic controller, the immobilizer system will also cause the engine to not work properly and the engine fault light will be lit at the same time.

There are many reasons why the engine fault light is on, it may be a problem with the sensor, or it may be that your gasoline is not good, it is recommended that you use a decoder to read the fault code, according to the fault code prompt to make a judgment, if it is an occasional failure, if there is no problem, you can eliminate the fault light, I hope my answer is helpful to you, I hope to adopt.

Answer: The engine is composed of multiple sensors and mechanical parts, if one thing is damaged, then the engine system will receive a signal, and then the instrument will light up, and the engine system fault light will indicate that the owner needs to be repaired. Since you are still a new car, you can get repairs free of charge. You can make a guarantee service for you later according to the three guarantees1

The same fault repair more than 5 times can be replaced, within the validity period of the three guarantees (the validity period of the three guarantees is 2 years or 50,000 kilometers, whichever comes first), if the car repair time is more than 35 days, or the same product quality problems caused by the repair of more than 5 times, the consumer can change the car. 2. Within 60 days from the date of the seller's purchase invoice or within 3,000 kilometers of mileage (whichever comes first), the engine can be returned if it is still abnormal after two engine changes.

The reason why the Buick Yinglang engine failure light is on

1. Poor gasoline quality will lead to insufficient combustion of the mixture in the cylinder, resulting in the pollution lamp being on, and it is easy to produce carbon deposits.

2. The presence of carbon deposits at the top of the inlet duct and piston will lead to poor atomization, which will cause combustion and not cause the pollution lamp to be lit.

3. When the cold car starts, especially when the weather temperature drops sharply, due to the temperature correction problem of the computer, the pollution light will be on when it is started, but as long as the temperature drops to a certain temperature and does not fluctuate, it will be relatively stable.

4. If the mileage of the engine is too long, the working characteristics of the spark plug will be weakened, and the pollution lamp will be lit.

5. Too much carbon deposition and difficult ignition will lead to the reverse breakdown of the ignition coil, resulting in the failure of the ignition coil, causing poor ignition, resulting in incomplete combustion, and the pollution lamp is on, which has a distinctive feature that the engine is always seriously shaking when the ignition coil fails. If it is not always severe jitter, the ignition coil can be basically ruled out.

6. The age of the vehicle is too old, and the mechanical aging leads to poor engine working conditions, resulting in poor combustion ignition, resulting in pollution lights.

7. The failure of some sensor computer boards causes the pollution lights to be on.

Warm reminder: There are many reasons why the pollution light is on, when the pollution light is on, especially the engine action shakes or is a little shaky, the owner should take the time to go to the car repair shop for inspection or maintenance.

Summary. The problems caused by the engine failure light are mainly caused by the poor working of the engine itself. The common faults are mainly as follows, the first is the problem caused by the ignition of the spark plug is not good, and the second is caused by the abnormal sensing data of the engine sensor.

Hello, I am helping you sort out the answer to your question, please wait a while The problem caused by the engine failure light is mainly caused by the poor working of the engine itself. The common faults are mainly as follows, the first is the problem caused by the ignition of the spark plug is not good, and the second is caused by the abnormal induction data of the engine sensor.