What is the problem with the engine light on and why is the engine light on?

Engine indicator refers to the indicator light used to show the working condition of the vehicle's engine. The indicator light is used to show the working condition of the vehicle engine, when the key door is opened, the vehicle self-test, the indicator light is lit and automatically extinguished, if it is always on, it means that the engine of the vehicle has a mechanical failure and needs to be repaired.

Once in a while, it should be fine, just pay attention to it in the future, continue to observe, if there is no problem, you don't need to go to the after-sales inspection.

Hello friend, it is recommended to use a computer to detect the fault code processing.

When the engine is running, the fuel injection of the fuel injector to the cylinder is atomized, and the atomized mixture meets the cold cylinder wall is condensed on the cylinder wall, which is not conducive to the ignition combustion of the engine.

If the temperature of the engine wall is very high, the mixture enters the cylinder and encounters the wall of the boiling soup is not condensed and gasified, and the mixture gasified at high temperature is conducive to the combustion of the mixture, which is conducive to the smooth and normal operation of the engine.

Engine shaking means that the mixture inside the cylinder is not completely combusted, the incomplete combustion of the mixture will be discharged through the exhaust valve during the engine exhaust process, at this time there is an oxygen sensor installed on the exhaust pipe channel, his function is to check the oxygen content in the exhaust gas discharged, the more fully the mixture is burned in the cylinder, the less oxygen is contained, on the contrary, the more, the oxygen sensor uses this working principle to detect and convert the electrical signal that the computer can identify to the engine control computer, and the computer then according to the set software program, The parameters of the engine working state are collected by each sensor on the engine and sent to the ignition system after correction and calculation, and the work instructions of the fuel injection system are corrected, and these systems correct the working parameters to complete ignition and fuel injection after receiving these work instructions, and the engine has entered the work of ignition and combustion again at this time, so that the work is repeatedly adjusted. When the computer receives the parameters of the oxygen sensor after the exhaust emissions seriously exceed the national legal standards, the internal program of the computer can not be corrected to the standard range, at this time, the engine control computer will send a warning light (yellow pollution light on) through the instrument to remind the owner to the maintenance station to check the cause of the engine pollution emission lamp.

If the engine fault light is on, there is no abnormal noise in the cabin, there is no other abnormal prompt in the instrument, the vehicle power is not affected, and the gearbox upshift is not affected, you can continue to drive to the repair shop for further investigation.

There are many reasons why the engine fault warning light is on, which may be the poor combustion state in the cylinder, engine knocking (the engine combustion is abnormal, the pressure curve appears high-frequency, large fluctuations, and will break through the cylinder block in serious cases), carbon deposits inside the engine, etc.

The reasons why the engine light is on are:

1. There is a problem with the gasoline you add or the engine has too much carbon, resulting in a bad combustion state of the engine, which may cause the code roll fault light to turn on;

2. The oxygen sensor of the engine is faulty, this fault will generally make the engine fault light light light yellow, which will affect the normal driving in the mold, as long as it is opened, remember to check the reason why the engine fault light is lit on this mountain;

3. Problems such as fuel injector or intake valve blockage and carbon deposition will cause fault light alarm, which is generally related to the quality of the oil you refuel, or the car is not paid attention to when it is repaired into the dust.

Reasons for the failure of the light: no regular maintenance, abnormal sensor, poor combustion of the mixture.

1. There is no regular maintenance

If the owner does not have regular maintenance, coupled with bad driving habits for a long time, it is easy to bring a great burden to the operation of the engine, so as to remind the owner of timely maintenance through the fault light.

2. The sensor is abnormal

Included aerobic sensor, water temperature transmitter, etc. When the sensor is damaged, the signal is interrupted or the contact is poor, resulting in the ECU not being able to obtain specific engine data, resulting in the fault lamp being lit.

3. Poor combustion of mixed gas

When the engine spark plug fails, the fuel pump fails, or the ignition coil fails, these can cause the mixture to burn poorly. Once the mixture combustion is poor, it will cause carbon deposition or detonation in the engine, and when these conditions are detected by the engine oxygen sensor, it will be directly transmitted to the ECU, resulting in the fault lamp being lit.

Resolution

1. Maintain the vehicle regularly and maintain good driving habits.

2. If the oxygen sensor fails, the engine fault light will turn on, and the owner needs to repair or replace it. If the water temperature sensor fails, the engine will not be well cooled, which will reduce the service life of the engine, and the coolant should be replaced in time.

3. The air supply should be adjusted if the mixture combustion is poor.

You can check that there may be a problem with the fuel, spark plugs, oxygen sensors, etc.

Hello dear <>, happy to answer for you. The engine light is on, the engine fault light on the dashboard is on, and there are too many reasons for shouting. It can be said that most of the problems in the car will be accompanied by the engine failure lights will be lit.

Needless to say, the following are a few examples that have nothing to do with the engine: 1. The battery is out of power, and the battery indicator light is lit, and the engine fault light will also be lit. 2. If the newly bought car is not maintained according to the regulations, the engine fault light will turn on.

3. If the oil is not enough, the oil indicator light will turn on, and the engine fault light will also turn on. 4. If there is a shortage of coolant, brake oil, booster oil and other oils, the engine fault light will be on. 5. There is no problem with the car, the electronic system is falsely alarmed, or it is caused by the failure to clear the fault code after adding because of the lack of something before.

Since you can't see the actual car, you can't make an accurate judgment, so it is recommended to go to a 4S shop or a professional auto repair shop in time, so that the technician can read the fault code with a code reader, and first determine where the problem is, so as to fix the symptoms. <>

The reasons for the failure light of the car engine are poor gasoline quality, substandard exhaust emissions, faulty oxygen sensor, faulty air flow sensor, and carbon deposition in spark plugs.

1. Poor gasoline quality and substandard exhaust emissions: Poor gasoline quality will not only lead to insufficient combustion of the mixture in the cylinder, resulting in excessive carbon deposits, but also cause hidden dangers such as oil circuit blockage and component corrosion.

2. Oxygen sensor failure: Therefore, the obstacle lamp is lit due to the damage of the sensor related to the vehicle engine system, so most of the delay is caused by the oxygen sensor or the solenoid valve that adjusts the intake and exhaust camshaft.

3. Air flow sensor failure: The air flow meter detects the amount of air inhaled and converts it into an electrical signal and transmits it to the engine computer. The ECU indirectly determines the amount of fuel supplied based on the optimal air-fuel ratio.

4. Spark plug carbon deposition: Spark plug carbon deposition will lead to poor engine operation, difficult starting, unstable idling, poor acceleration, sudden oil return, excessive exhaust, increased fuel consumption, etc., and the owner should pay attention to regular cleaning and replacement of spark plugs.

How car engines work

The working principle of the engine is to convert other forms of energy into mechanical energy, and the working principle of two-stroke engines and four-stroke engines is different, and most of the automobile engines are four-stroke. The working cycle of a four-stroke gasoline engine consists of 4 piston strokes, namely intake stroke, compression stroke, work stroke and exhaust stroke.

The intake valve is opened, the exhaust valve is closed, the piston moves from the top dead center to the bottom dead center, the cylinder volume above the piston increases, the vacuum degree is generated, the pressure in the cylinder drops below the intake pressure, and the gasoline atomized through the carburetor or gasoline injection device under the action of vacuum suction is mixed with air to form a combustible mixture, which is sucked into the cylinder by the intake tract and the intake valve. The intake process continues until the piston passes the bottom dead center and the intake valve closes, after which the upward piston begins to compress the gas.

Fault 1, sensor damage, poor contact, or signal interruption are on; 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.

The specific situation is analyzed as follows; 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 core 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 hidden digging 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, what 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 detonation, and these will eventually be monitored by the engine's oxygen dispersion sensor, and after reporting to the ECU, the fault light will naturally be lit to warn of the 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, and at the same time, the vehicle will also have oil leakage, large oil consumption, and power loss.

This is an engine fault light.

The reason why the engine failure light is on is generally as follows:

Poor combustion condition or poor fuel quality;

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

The computer is unable to obtain engine data.

It is recommended to check the water temperature gauge and oil pressure warning light first, if these two lights also alarm at this time, it means that the engine is really faulty, please be sure to stop in time, and call roadside assistance.

Hello, this commonly known as the yellow engine fault light, also called the EFI system fault light. 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.

What's going on with the car engine light on? What should I do?

An engine is a machine that can convert other forms of energy into mechanical energy, such as internal combustion engines (reciprocating piston engines), external combustion engines (Stirling engines, steam engines, etc.), jet engines, electric motors, etc. For example, the internal combustion engine usually converts chemical energy into mechanical energy.

There are many reasons why the engine failure light is on, such as poor refueling, faulty oxygen sensor, and so on. Also know that faulty lights come in different colors and different warning levels. The engine's fault light is yellow.

The yellow level is just a reminder for you. The red signal light is an advanced signal light, and you need to stop using it immediately.

These failures may cause problems such as reduced engine power output, starter shake, etc., but these will not affect our normal driving. At this time, you can call ** to ask the maintenance personnel about the situation of the vehicle, or you can drive to the place where it can be repaired as soon as possible for inspection and maintenance.

For example, the oil pressure fault light is red. This red fault light must be extinguished immediately and the engine should not start. The oil pressure fault light is on, indicating that there is a problem with the engine's lubrication system, and the oil is not lubricating properly in the engine.

If you continue to use the car, start the engine at this time, the engine will be damaged due to insufficient lubrication inside the engine. Therefore, when the yellow fault light appears on the car, you can actually continue driving, but the red fault light must not continue to drive and Xinli, you must stop immediately and turn off the engine. In the case of a yellow fault light, you can consult the maintenance personnel and tell him the current condition of the vehicle.

If the problem is not serious, you can continue driving.

Millions of car purchase subsidies.