What are the reasons for the engine failure light to turn on?

There are often the following reasons for the engine failure light, which is for reference only: 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.

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 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.

1) Poor quality car fuel added;

2) Abnormal combustion in the cylinder;

3) Carbon deposition is generated by automobile spark plugs, resulting in abnormal engine operation;

4) Whether the antifreeze and water temperature sensors are in a faulty state;

5) The throttle is seriously dirty;

6) Failure of oxygen sensor and ignition coil;

Generally speaking, there is a corresponding fault on the dashboard, the light will be on, of course, there is no fault but because there is a fault code, so the light will be on, you can call the 4S shop where you bought the car, ask what lights are on your car, and how to deal with it.

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.

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.

With the development of automobile gasoline engines in the direction of high speed, high compression ratio, high power, low fuel consumption and low emissions, the traditional ignition device has not adapted to the requirements of use.

The fault of the engine is generally lit by the abnormal lighting of the electronic control components on the engine. The general fault is so bright, it must be repaired, it should be the fault is so bright, the car can still drive, and it should be an emergency procedure for the computer to be faulty. You're just over 20,000, and a lot of things are under warranty.

Only more than 2w kilometers of the car, the general engine itself is unlikely to fail, unless there is a problem in the engine tires, if there is never a problem, suddenly appeared today, then it can be basically determined to be an oil problem. It is recommended to change to a trustworthy large gas station (petroleum and petrochemical) to fill up the fuel tank and dilute the remaining problem oil. Run for a while to see if the fault light is still on.

According to what you said: I gave you an analysis, your engine should be fine, because as soon as your car encounters bumps in the road, the fault light flashes, which should be the fault of the sensor contact! According to the mileage of your car, it should be within the warranty period, and you should go to the 4S store for normal warranty first.

Normally, a car of more than 20,000 kilometers should not be a problem)

Most likely, the engine is not having enough lubricating oil.

It is very likely that it is a faulty lamp wiring problem

Reason, for reference only, orange cover 1, sensor failure,; 2. The quality of gasoline is not up to standard; 3. The air leakage of the inlet pipe leads to the mixture being too thin; 4. The fuel pressure is low, the fuel injector is disturbed, and the fuel filter is blocked; 5. The signal of the pressure sensor and the throttle position sensor is abnormal; 6. The ignition timing is inaccurate and the ignition is too late. 7. Weak high-voltage sparks due to poor spark plugs, igniters or high-voltage wires; 8. The throttle is dirty; 9. The exhaust gas recirculation system works poorly; 10. The exhaust pipe is blocked; 11. The cylinder pressure is low; 12. Turbocharging system failure 13. Clutch three-piece set, so 14 empty round Li air filter is blocked, piston ring is broken or stuck, valve seal is poor, ignition time is too late, carburetor mechanical failure, air intake pipe leakage, individual cylinders do not work well or do not work, etc. However, some of the faults of insufficient engine power can be solved by use. Such as:

General wear of the cylinder, poor flow of the carburetor oil passage, etc. When the user reflects that the engine power is insufficient, when the oil is burned, we should first judge the cause of the lack of power, in the exclusion of the air filter blockage, the carburetor throttle can not be fully opened, the ignition timing is not good, the intake pipe gasket is damaged, the individual cylinder does not work or does not work well, and then according to whether the engine fuel consumption is too high to judge the carburetor working condition, if the fuel consumption is too high, the exhaust smoke is very thick, it is likely that there is a mechanical failure such as the volume hole falling off, this fault must be repaired as necessary. Finally, we have to judge the wear and tear of the engine cylinders.

Engine wear directly affects the tightness of the cylinder; Therefore, checking the tightness of the cylinder can largely reflect the degree of wear of the cylinder, and the most convenient way to check the tightness of the cylinder is to use the cylinder pressure gauge to check the compression pressure of the cylinder.

The reasons for the engine fault light to be on: 1. The failure of the spark plug, ignition coil, fuel pump, and oil circuit blockage of the engine caused poor combustion of the engine mixture; 2. There is no regular maintenance; 3. Oxygen sensor problem; 3. Engine oil problems; 4. The fuel tank cap is not tightly covered; 5. The air filter is not clean; 6. The anti-theft system has the wrong line. The engine fault light is on the solution:

1. The yellow light indicates that the engine is faulty, but the disturbance is that the fault does not affect the normal operation of the engine and needs to be tested and repaired; 2. The red light indicates that the engine has a serious fault, and it needs to be repaired immediately under normal circumstances.

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 must be some carbon deposits inside the engine after a certain period of use, which will cause the engine design parameters to change, and its properties are unstable and heat is accumulated, and the 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 engine fault light is on the solution.

1. Clean the engine.

Once the engine failure light is on, the owner should clean the engine in time, and there are currently two correct cleaning methods:

1) Go to the repair shop to clean the carbon deposits with a special cleaning agent.

2) Clean the entire fuel system with good fuel additives, including removing carbon deposits in the cylinder.

2. Add higher grade gasoline.

After the engine cleaning, because the compression ratio of the current automobile engine that meets the national IV emission standard is generally above, this kind of car is not suitable for long-term gasoline below 95. In order to keep the engine in good working condition, the owner can choose to add 95 or 97 gasoline, which can usually solve the problem of the engine failure light on.

3. Improve fuel quality.

“1.The spark plug is caused by the fact that the gap is too large for a long time or there is carbon deposit, internal damage, etc.;

2.The ignition coil of one of the cylinders was damaged, causing this cylinder to not work properly;

3.The internal short circuit of the gasoline pump makes the low-pressure fuel unable to reach the ** gasoline pressure normally, causing the engine to shake or stall;

4.There is air leakage in the engine intake system, which causes the engine to shake;

5.In the cold car state, the throttle, valve, and piston top are caused by excessive carbon deposit;

6.One of the cylinders of the engine, due to the poor sealing of the valve or the piston ring is stuck by carbon deposits, there is no cylinder pressure, resulting in engine shaking.

The main reasons why the 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.

It may be due to the quality of the oil or the failure of the sensor.

It is recommended that you contact the after-sales service in time to solve the problem.

The safest, I wish you health and happiness.

1.Poor quality of gasoline will cause the mixture to burn inadequately in the cylinder, resulting in polluting lights, and it is also prone to carbon deposits.

2.The presence of carbon deposits in the inlet duct and piston tip will lead to poor atomization, which will lead to insufficient combustion and the pollution lamp will be on.

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 level, it will be relatively stable after the temperature does not fluctuate.

4.If the engine mileage is too long, the spark plug operating characteristics will be weakened, and the polluting lamp will be lit.

Hello, the engine fault light may be a temporary failure, the specific manifestation is that the car is driving without obvious symptoms, and the engine fault light is on for a period of time and off for a period of time. Temporary failures may seem insignificant, but they can also be "hidden killers". Therefore, the owner should not ignore it and should find time to check the vehicle.

If the fault light is always on and accompanied by other abnormal conditions, including the engine cannot be started, easy to stall, engine shaking, power dropping and other problems, you should contact a 4S shop or repair shop for maintenance as soon as possible.

Sensors, maintenance issues, oil problems, intake problems, poor combustion of the mixture, etc., can all cause the engine fault light to illuminate. The engine is the core component of a car, and the corresponding fault light is on, which either means that there is really a fault; Either the engine is experiencing a false signal false alarm failure. Don't underestimate the engine failure light, it may not have a noticeable impact in a short period of time, but if left unattended for a long time, the vehicle may eventually have a serious failure.

1. Sensor.

Damaged sensors, poor contact, or signal interruptions cause the car's ECU to receive incorrect engine data and finally turn on the engine fault light with a misjudgment. There are many automotive sensors, the core of which are water temperature, crankshaft position, air flow, inlet air temperature, oxygen sensor, etc. Solving the engine failure caused by the sensor is very simple, and you only need to replace or adjust the sensor that has the problem.

Oxygen sensor: There are two oxygen sensors, respectively before and after the three-way catalytic converter, and the role of the oxygen sensor in different positions is different. The front oxygen sensor needs to detect the air-fuel ratio of the engine under different operating conditions, and the data will help the car computer to adjust the fuel injection amount and calculate the ignition time. Post-oxygen is used to detect the working condition of the three-way catalytic converter.

An over-concentrated or over-dilute mixture is a direct effect of an oxygen sensor problem and can also illuminate an engine failure light.

Air Flow Sensor:

Also known as an air flow meter, its role is to calculate the amount of air and convert it into an electrical signal, which is determined by the engine computer based on the optimal air-fuel ratio. Similarly, the effect of an abnormal air flow sensor is that the mixture is too thick or too thin, causing the engine failure light to illuminate.

2. Oil. In fact, there are strict requirements for the oil of the car, and we only need to fill the qualified oil to meet the normal operation of the engine. Although the unqualified oil can support the operation of the engine, the engine is uncomfortable to run, so the wear will be accelerated, and the engine fault light will also be lit.

3. Mixed gas combustion.

Problems such as faulty spark plugs, faulty ignition coils, faulty fuel pumps, and clogged oil circuits can all lead to poor combustion of the mixture. The consequence of poor combustion of the mixture on the engine is carbon deposits or knocking, which causes the engine fault light to illuminate. Measures such as replacing spark plugs, cleaning oil circuits, and cleaning up carbon deposits have a certain chance of eliminating faulty lights.