What should I do if the car engine fault light is on?

1. Start and stop the vehicle three times in a row. 2. Turn off the engine and pull out the negative pole of the engine's battery, wait for 30 seconds and then connect it, and then try to start.

3. It can be eliminated after using a fault detector for troubleshooting in a 4S store.

The reasons for the engine fault light are as follows: 1. Sensor problem: when the sensor is damaged, the contact is poor or the signal is interrupted, the ECU of the car cannot accurately obtain the engine data, and the engine fault light will be turned on at this time; 2. Maintenance problems:

The owner's failure to maintain it on time will increase the burden of engine operation, which can only be reminded by the fault light.

It is recommended to stop the car immediately to check and restart it to see if the fault exists. If it's red, stop for repairs immediately. If it's yellow, you can keep driving and repair it as soon as possible.

The reason why the car fault light is on:

Vehicle fault light is generally caused by the fuel emission system, when the fault light is on, the vehicle is started, extinguished, started and extinguished three times after the vehicle is started to observe whether the fault light is still lit, or it is still lit to check the fault code in the store in time to see whether it is the problem of the engine or the sensor failure, or it may be an occasional failure, and you can not go to the store in time to check. The engine burns badly, and the engine knocks.

Precautions: 1. Do not drive as usual during driving, and it is best to keep driving at a low speed. 2. Always pay attention to whether the oil gauge alarms, if the oil is seriously missing, it is absolutely impossible to drive.

3. Always pay attention to whether the water temperature gauge (antifreeze) alarms, if the water temperature is too high and driving for a long time, the car breaks down. The engine fault light is on, and it is usually okay to drive at low speeds with caution if there is no particularly noticeable fault. It may be some minor faults, or there may be no faults (false faults), but if there is an obvious fault in the engine, such as serious abnormal noise, serious shaking, engine smoke, etc., you must not drive on the road, and it is best to contact the repair shop to wait for rescue.

Hello! The engine fault light may be a temporary failure, which is manifested in the fact that the car is driven 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 fault light, it may not have a significant impact in a short period of time, but if left unattended for a long time, the vehicle may eventually have a serious malfunction.

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.

The 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, the oil of the car has strict requirements, 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.

The engine fault light is on and the engine should be troubleshooting. 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. The reasons that cause the engine failure light to come on are as follows:

1. Poor gasoline quality will lead to insufficient combustion of the mixture in the cylinder, resulting in the failure light to be on, and it is easy to produce carbon deposits;

2. The presence of carbon deposits at the top of the piston in the inlet duct will lead to poor atomization, which will cause insufficient combustion and cause the fault light to be on;

3. When the cold car starts, especially when the weather temperature drops sharply, the fault light will be on when it is started due to the temperature correction problem of the computer, 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 fault lamp will be lit.

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.

The reasons for the engine failure light to turn on: 1. There is no maintenance on schedule, which leads to an increase in the burden of engine operation; 2. The oil quality of the lubricating oil changes during use, resulting in the deterioration of the oil; 3. The spark plug of the engine, the ignition coil is faulty, the fuel pump is faulty, and the oil circuit is blocked. Steps to Eliminate Engine Failure Lights:

1. Turn off the ignition, and then hit the ignition switch to the ON gear; 2. Open the cabin cover and the fuse box cover, check the indicator on the fuse box cover, find the EFI 30A fuse and unplug it, wait for a few seconds to reinstall it; 3. Turn off the ignition switch, re-hit the ON gear, and then start the car, and the fault light can be eliminated.

The engine fault light is not necessarily the engine failure, but more often some parameters exceed the standard value, such as exhaust emissions exceeding the standard, or for some reason the engine fires, etc.

The engine fault 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.

If it doesn't affect the oil, or the oxygen sensor, you can add two cans of general additives, or additives of the National VI standard, and you can turn off the lights when you run. The car of China VI is more picky about oil, and the quality of the oil is slightly poor, so the sensor is easy to detect the problem and turn on the light.

The function of the fuel system is to supply a certain amount of clean and well-atomized gasoline to the engine according to the needs of the engine's operating conditions, so as to mix with a certain amount of air to form a combustible mixture. At the same time, the fuel system also needs to store a considerable amount of gasoline to ensure that the car has a considerable driving range.

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

The reason why the engine failure light is on.

1. The combustion state is not good.

2. Engine knocking.

3. Internal reasons for the engine failure light: (1) The fuel quality is not good. (2) The inside of the engine cylinder is not clean and there is carbon deposit.

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 braking system can be divided into human braking system, power braking system and servo braking system. The braking system that uses the driver's body as the only braking energy source is called the human braking system; A system that brakes entirely on the potential energy in the form of air pressure or hydraulics converted from the power of the engine is called a power braking system; A braking system that uses both human and engine power for braking is called.

Check the water temperature gauge and oil pressure alarm light. If the water temperature gauge and oil pressure warning light do not alarm, the car can still be driven, but at this time, you must pay attention to control the speed of the vehicle and drive to the maintenance station in time for inspection. When the water temperature is too high or the oil pressure warning light is on, if the vehicle is obviously faulty, you should immediately pull over and call the maintenance station for rescue, so as not to affect the performance of the engine.

When the car is moving, or at the moment when the car is on fire, the engine failure light on the dashboard is on, usually red or yellow.

Engine failure signals are sent by the ECU, which controls all the electronics of the entire engine, such as electronic throttle valves, fuel injectors, generators, fuel pumps, etc. Covering intake, exhaust, fuel, ignition, timing and other systems. So, if the engine failure light is on, what is the specific cause?

It can only be detected by a computer. Poor engine combustion condition is the main reason why the engine failure light is on. In the design of automobiles, 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.

Many riders who find that the engine failure light is on have a feeling that the engine failure light suddenly turns on after filling up a tank of fuel. Due to the requirements of the engine for oil quality indicators, especially with the continuous improvement of various specifications for engine requirements, the requirements for oil quality indicators are getting higher and higher. In real life, after all, some gas stations cannot provide fuel for high-performance engines in full accordance with the specifications, resulting in the occurrence of engine failure lights.

After a certain period of use, there will be some carbon deposits accumulated inside the engine, which will cause the design parameters of the engine to change. At the same time, its properties are unstable, and heat accumulates, which can lead to disorderly ignition of the engine, which can lead to engine knocking. In this case, the engine failure light will illuminate.

The engine fault light is on. The fuel pump may not pump oil. The car cannot be started, and it cannot be started directly.

It is also possible for the oxygen sensor to malfunction.

There is also a possibility that the fault light is on, that is, a false fault, which is more likely. For example, if you are driving a family car, have just come to a high-speed off-road road in the mud, or want to know what a plug is for, the ECU will warn you of this improper operation. In fact, there is nothing wrong with the car, just troubleshoot the fault code.

There are always some anomalies that occur after the engine failure light comes on. If it is not solved in time, the following problems usually occur, the quality of automobile exhaust gas deteriorates, and the environment is polluted. The fuel consumption of automobiles has increased, wasting oil resources and RMB resources.

The combustion chamber temperature rises and wear increases, which can lead to early engine damage. The engine burns oil. Engine noise increases, affecting driving and ride comfort.

There are many reasons for the failure of the car engine, including the failure of sensors, such as water temperature sensors, crankshaft sensors, oxygen sensors, etc.; There are also other faults like spark plug failure, ignition coil failure, fuel pump failure, oil circuit blockage, etc.

What you need to know is that the engine failure signal is sent by the ECU (engine computer), and the ECU controls all the electronic equipment of the entire engine, such as electronic throttle, fuel injector, generator, fuel pump, etc., covering various systems such as air intake, exhaust, fuel, ignition, timing, etc. So what should we do when the engine lights are on?

When the engine fault light is on, it can be divided into three situations, each of which has a different way to deal with it

The first is that the car can't start, which may be caused by the failure of the fuel pump or ignition parts, then let's call ** for help, after all, the chance of ordinary people wanting to make the car come back to life by themselves is very small.

The second is that the fault light is on, but there is no abnormality in driving, this may just be a sensor failure, in this case, you can continue to drive temporarily, but it is best to slow down at medium and low speeds, and the next destination is of course the repair shop.

The third is that the engine fault light is on, and the vehicle can be driven, but there are symptoms such as severe shaking and acceleration weakness, so don't take the courage to try your luck in the face of this situation, obediently stop and call for rescue. The engine is in a tantrum, and you can't coax her.