The engine fault light is on, but the car can run normally, what is the general problem?

The reason why the engine fault light is on but can drive normally is that the car needs to be maintained and changed oil, and the car engine fault light on the dashboard is lit, usually red or yellow, once the indicator light is on, it will not disappear automatically in most cases, and will disappear automatically in a few cases, which is the so-called engine fault light. The current engine system failure should be checked and repaired in time. Secondly, this fault information will be stored and provided to the car maintenance supervisor as a reference during the repair so that the fault can be resolved faster.

In order to ensure that the engine continues to operate in the event of a failure, the computer will ignore the detected fault if it has little impact on the operation of the engine, but in reality, the engine is not in good working order in this case.

The most common causes are: dirty throttle valves, it is recommended to clean them every 2 to 30,000 km; Carbon deposition on valves and fuel injectors, it is recommended to clean the air intake and fuel system every 3 to 40,000 km; In addition, the engine must be maintained on time in strict accordance with the requirements of the manufacturer, and the oil filter, air filter, fuel filter, etc. must be replaced regularly.

1. The combustion state is not good.

2. Engine knocking.

3. The fuel quality is not good.

4. The inside of the engine cylinder is not clean and there is deposited carbon.

5. The computer cannot obtain the engine data.

Hope, thank you!

The most common is caused by carbon deposits, but you still need to read the fault code to know.

It is recommended to go to a specialized repair shop for testing.

1. The combustion state is not good.

Poor engine combustion condition is the main reason why the engine failure light is on. In the design of the car, in order to ensure that the engine is in good working condition and ensure the normal working life of the engine, an oxygen sensor is designed and installed on the engine to monitor the combustion state of the engine.

2. The fuel quality is not good.

Many riders who find that the engine fault light is on have a feeling: that is, the engine fault light suddenly turns on after adding a tank of fuel. Because the engine has requirements for the quality index of oil, especially as the requirements for the engine are getting higher and higher in various specifications, the quality index of the oil is also getting higher and higher.

3. The inside of the engine cylinder is not clean and there is carbon deposit.

After a certain period of use, there must be some carbon deposits inside the engine, which itself will lead to changes in the design parameters of the engine, and at the same time, its properties are unstable and heat is accumulated, and these accumulated heat will lead to disorderly ignition of the engine, thereby causing engine detonation. In this case, the engine fault light is also illuminated.

The car will self-check every time it starts, and while the car is moving, the trip computer will also regularly check the internal parts of the car. As long as the computer detects the fault of the car, it will remind the owner through the warning light on the dashboard, and the owner can know what the fault of the car is through various warning lights, and can also deal with the car fault in time. In the warning light, there is a faucet sign, and it is the engine failure light.

Many car owners think that the engine failure light refers to the warning light of engine failure, so it is very strange why this light is on and the car can still move forward. But in fact, the engine fault light does not specifically refer to the engine failure, basically as long as the sensor fails, and it does not have a special fault light, then the engine fault light will be on. Therefore, it is easy for car owners to see the engine fault light on when driving.

So can it continue to drive after it lights up? This is seen in two ways.

First of all, if the engine fault light is on, but the owner does not feel any difference when driving, and the basic operations such as acceleration and deceleration can be carried out normally, then the car can still be driven. In this case, the car's sensors are generally faulty, but it will not affect the car's driving, at most, the emissions will become higher, and sometimes it will even go out by itself. Don't ignore it, though, and check it out when you have time.

The second is that there is an abnormality in the car. For example, after the engine fault light is on, the car feels weak when accelerating, or the shaking of the car becomes larger, anyway, it is different from the usual feeling of driving. In this case, it is still not recommended that the owner continue to drive, it is better to call for help and tow the car for repair as soon as possible.

Because this kind of fault is generally relatively large, the danger of continuing to drive on the road is very high.

In short, after the fault light is on, the owner has to go to the repair shop to test it, but the specific maintenance time depends on whether it has a big fault.

Hello, I'm happy to answer for you, depending on the situation, the following aspects: first, if we see the oil pressure indicator light up after starting, don't turn it on, the first thing is to check the oil dipstick first, see if the oil level is normal, and fill the oil if necessary. If you can't find the problem, go to the nearest repair shop for an inspection.

Second, if you find that the oil warning light is on while driving, you can find a safe place to stop and check, of course, it is limited to the inspection of the engine oil, and you can't make anything to worry about other faults. If you drive normally, you can continue to drive to the nearby 4S shop for maintenance, and pay attention to slow down.

Third, if the oil warning light on the dashboard of the vehicle is on, the car can be driven normally, but there are symptoms such as shaking or acceleration weakness, and continuing to drive is likely to aggravate the wear and tear of the engine, and it can also threaten the safety of your life and property and that of others, so it is better to call a tow truck.

Question: I had just finished a long run, and when I stopped, the oil failed, and the light came on.

I had just finished a long run when I stopped and the oil failure light came on.

The viscosity of the oil is closely related to the quality of the oil, the higher the viscosity, the stronger the resistance of the oil to high temperatures, and vice versa. But it's not that the more viscosity the better, we should use the right oil grade for our engine.

2. The pressure limiting valve is blocked or improperly adjusted.

In order to prevent the oil pressure of the lubricating system from being too high and increasing the power consumption of the engine, resulting in oil leakage at the sealing connection in the oil circuit, a pressure limiting valve is set on the main oil channel or oil pump. Its function is to limit the oil pressure of the lubrication system so that it does not exceed the specified value. A faulty pressure limiting valve can cause the oil pressure to malfunction, causing the oil light to turn on.

3. The amount of engine oil is insufficient.

If the oil quantity is insufficient, the oil volume of the oil pump will be reduced or the oil cannot be pumped due to the air entering the pump, so that the oil pressure will drop, and the crankshaft and bearing, cylinder liner and piston will be aggravated by poor lubrication.

4. The engine temperature is too high.

If the engine cooling system has too much scale, poor heat dissipation, long-term overload operation or too late fuel supply time of the fuel injection pump, etc., the engine will overheat, accelerate the aging, deterioration, and thinning of the oil, leak from the gaps of each mating, reduce the pressure, and turn on the oil fault lamp.

5. The oil bypass valve is faulty.

The oil bypass valve is to maintain the normal oil pressure of the main oil channel, if its pressure regulating spring is softened or adjusted improperly, the mating surface of the valve seat and the steel ball is worn or stuck and closed loosely, the pressure of the oil will be reduced.

6. The oil filter is blocked.

When the oil filter is clogged and cannot flow, the bypass valve located on its base is opened and the oil enters the main oil channel without filtration. If the opening pressure of the bypass valve is set too high or too low, the pressure of the oil pump will rise or fall, which will also cause the alarm light to come on.

Hello Answer! The reasons for the engine failure light are: 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 and ignition coil failure; 6. The fuel pump is faulty and the oil circuit is blocked; 7. The air conditioner filter is blocked.

Solution: 1. Use fuel additives to clean the entire fuel system; 2. Add higher grade gasoline after engine cleaning; 3. Use first-class fuel additives to improve the cleanliness level of fuel; 4. Replace the three-way catalytic converter.

Have a great day!

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Vehicle fault light is generally caused by the fuel emission system, you start and extinguish the vehicle when the fault light is on, start and extinguish the car three times and then start the vehicle, you observe whether the fault light is still lit, or it is still lit, you need to go to the store in time to check the fault code, to see whether it is the engine problem or sensor failure, or it may be an occasional failure, you can not go to the store in time to check.

Automobile engine fault light refers to the signal that the sensor, actuator or controller of the automobile engine electronic control system does not match the design signal, in this case, the engine fault light will be lit, in this case you can continue to drive, but the best performance of the vehicle can not be achieved, so go to overhaul the vehicle as soon as possible.

The engine fault light is a problem that most car owners will encounter, like a faucet-like yellow light, the car circuit, various sensors and control modules are faulty, which will cause the engine fault light to be on. To be precise, the engine fault lamp belongs to the emission system lamp, and when the engine computer detects that a sensor is broken, which may cause the emission to not meet the standard, the fault lamp will be lit.

Hello, if your car's engine failure light is on, it is a problem with the car, it is best not to drive, stop immediately and go for repairs.

The sensor is damaged.

Because if the sensor is broken, it will conduct an error signal, which will also cause a fault light alarm. If this is the reason, the sensor needs to be replaced.

If the sensor is confirmed to be normal, then most of the causes of exhaust emission problems come from carbon deposits, and the carbon deposits of vehicles are still relatively serious.

There are many reasons for this, but the most fundamental problem is that gasoline is not fully burned, and carbon deposits are formed after remaining inside the engine for a long time.

This is not only related to the usual driving habits, but also has a certain relationship with the oil added. If you add gasoline that is not suitable or of poor quality, it is not guaranteed to burn sufficiently, and carbon deposits will be formed.

This is commonly referred to as the yellow engine fault lamp, also known as the EFI system fault lamp. As long as there are no special abnormalities in the engine power and sound, it can still continue to drive. Because there is a substitute bug program in the ECU.

Once one of the many sensors has a sensing failure, in order to ensure the normal operation of the engine, the ECU will replace the parameters of the faulty sensor according to the pre-set backup parameters to avoid vehicle breakdown.

For example, if the water temperature sensor is broken, the ECU will use a backup value of 80 degrees as the control parameter for fuel injection and ignition. So it can be opened, but it must also be repaired in time.

There are two scenarios when the engine fault light is on:

The yellow symbol light indicates that the engine is faulty, but the fault does not affect the normal operation of the engine, but it must be maintained.

The red symbol light indicates that the engine has a serious fault, and it needs to be repaired immediately under normal circumstances, if it is in special road conditions, it can be used in an emergency, but it is necessary to pay attention to the working status of the engine at all times.

The specific fault needs to be detected by the fault diagnostic instrument, it may be that the oxygen sensor is broken or the mixture is too thick and too thin, and the oxygen sensor must be replaced or the throttle air filter must be cleaned, otherwise the fuel consumption will increase.

If this happens, the car can run normally, this is mainly because the engine has an electronic control system failure, it may be a sensor problem or a line failure, you can generally find a nearby repair shop to read the fault **, if it is a historical fault **, clear the fault code can be solved.

Question: What should I do if the antifreeze is reduced and the alarm light is on.

Let's talk about buying a car, using a car, maintaining a car, and repairing a car.

The fault light of the engine is on, but the car is able to start normally, which means that it may just be a fault light.

The maintenance personnel can only solve the problem after the overhaul, and the driving is also assured.

Engine failure lights indicate a condition in a vehicle's engine, but not all conditions directly cause the engine to fail. The engine fault light is issued by the engine computer, and the engine computer controls all the electronic equipment of the entire engine, including electronic throttle valves, fuel injectors, gas pump generators, etc., covering various systems such as air intake, exhaust, fuel, ignition, timing, etc.

When the fault light is on, please go to the service station as soon as possible and be troubled and repaired by a professional technician. The key to ensuring driving safety is to ensure that the vehicle breaks down and can not be negligent, and timely maintenance and regular maintenance are the key to ensuring driving safety.

The main reasons why the car fault light is on are:

1. The combustion state is not good.

2. Engine knocking.

3. The fuel quality is not good.

4. The inside of the engine cylinder is not clean and there is deposited carbon.

5. The computer cannot obtain the engine data.

Hope, thank you!