How to eliminate the engine fault light when it is repaired

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.

There are many factors that can cause engine failure lights to turn on, such as:

The water temperature of the engine cooling system is too high, and the cylinder block is too hot;

engine timing;

a flow meter that measures the amount of air intake;

Throttle failure.

The engine fault light is on and the elimination method is repaired:

One: You can pull out the fuse to clear the fault code, if it can't be solved, go to the maintenance unit to use the decoder to clear the fault code to see, if you can't clear it, it needs to be repaired.

2: Generally, the decoder is used to clear the fault code, and some units will charge a small labor fee.

There are too many possible reasons for the engine failure light to turn on, and they can be roughly divided into the following three categories:

1. False failure. Report the fault**, but the work is normal, it may be that a certain operation is beyond the control of the computer, and the fault of the computer feedback can be eliminated first, and then see if the fault code is still jumped.

2. Minor faults. There is no particularly obvious fault in the engine, according to the computer detection information and further inspection, it is found that there is really some kind of fault, which does not affect normal driving or has little impact, and needs to be found and solved in time. For example, the inlet pressure sensor is faulty, etc.

3. Major failures. Such faults are noticeable to the naked eye and driving sensations, and seriously affect the normal operation of the engine, requiring immediate repair. For example, the engine is obviously underpowered, and it is likely that the oxygen sensor is a problem.

Are you sure you've fixed it? Generally, after repairing it, it disappears! The other faulty lights all disappeared automatically, and it is possible that Mi Xiu's was not on the spot, and he did not disappear without the nerve that touched him.

There are 2 ways to clear engine fault lights:

A tester can be used to clear the engine's fault codes.

The fault code can be cleared by disconnecting the negative electrode pile head of the battery.

It is recommended to use a detector to read the fault code of the engine, and then check the fault point according to the fault code. Drain engine failure.

1. Phenomenon: During the driving of the car, or the moment the car is ignited, the car engine fault light on the dashboard lights up, usually a red or yellow light, once it is lit, it will not disappear automatically in most cases, and it will disappear automatically in a few cases, which is the so-called engine fault light.

2. The surface reason for the engine failure light is 1. The combustion state is not good, and the engine combustion state is not good, which is the main reason for the engine failure light. 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. Each of the above indicators means:

Hydrocarbons (HC): unburned fuel oil components; Carbon monoxide (CO): an inadequately burned fuel component, which has great damage to human health, and carbon monoxide poisoning can cause poisoning death; Nitrogen oxides (NO):

Produced at excessively high temperatures in the engine, it indicates that engine wear is intensifying, and the atmosphere will pollute the environment. 2. Engine knock The engine has a special knock sensor to monitor the engine knock. Engine knocking already means that there is a risk of serious damage to engine parts or a significant loss of power.

In the case of non-inductive detonation, the engine computer will adjust the engine control parameters according to the monitored situation to avoid greater adverse effects, but when the non-inductive detonation has exceeded the range that the engine computer can adjust, the engine fault light will also light up the alarm.

There are usually three situations in which the driver of a car feels about a knock: the first is that the car is weak; The second scenario:

The car is weak and the engine is too noisy; The third case: there is an obvious knocking sound. In the first case, some engine fault lights will turn on, some will not, and in the second and third cases, the engine fault lights will inevitably come on.

3. The internal reasons for the engine failure light to be on 1. The fuel quality is not good.

If it is not a double B car, it is generally domestic, and the Japanese and Korean systems will take the battery back after 30 seconds to one minute after powering off, so that the computer can be initialized, and it can generally be eliminated. If it doesn't work, you have to go to the 4s or service station to eliminate it with an instrument, it should be free, and it can be done in a few seconds.

What should I do if the dashboard lights up yellow?

The fault light is lit because of the electronic control system. A malfunction has occurred. The electronic control system detected the wrong data.

Dedicated. The computer is wrong.

The location where the erroneous data is left. Confirm the fault. Confirm that the electronic control system is faulty, and light the indicator light on the meter.

At this time, you should go to the repair shop for maintenance in time. First of all, the fault code should be called. The direction indicated according to the fault code.

Troubleshoot. After troubleshooting. Clear the fault code in the computer.

Only then will the fault light go out.

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

The vehicle fault light is on, which can be solved by the positive and negative power supply.

The reason why the engine failure light is on.

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 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.

Since the domestic fuel cannot meet the requirements of the current high-efficiency engine for the time being, it is necessary to improve the quality of the fuel by yourself. For example, using good fuel additives to improve the cleanliness level of fuel should be the best way.

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 knock sensor is installed in the middle of the engine block, and the four-cylinder engine is installed between the 2nd and 3rd cylinders, or one in the middle of the 1st and 2nd cylinders, and one in the middle of the 3rd and 4th cylinders. Its function is to measure the degree of engine shake, and to adjust the ignition advance angle when the engine detonation.

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.

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 reason why the engine failure light is on is still more complicated, and it is recommended to check it in time to see what the problem is.

The engine fault light is sometimes a false fault, and it can be continued to be turned on, the key is to see if you can tell.

There are many reasons why the engine lights on faulty, such as the failure of the purification solenoid valve that controls the emission of fuel vapor, the failure of the air flow meter, the failure of the ignition coil, the failure of the thermostat, the failure of the three-way catalytic converter, the failure of the oxygen sensor, the excessive carbon deposit of the electronic throttle valve, and so on. Among the many causes, emission failures and non-impactful operational failures account for a large proportion.

Emission failure: 1. The quality of gasoline is not good, resulting in substandard emission detection;

2. The local air quality is not good, and carbon deposits are formed prematurely;

3. The oxygen sensor is damaged;

4. Insufficient combustion caused by spark plug or nozzle failure, etc.

Unaffected Operational Failures:

1. The fuel tank cover is not covered;

2. After the throttle is cleaned, the code is not cleared by the computer;

3. A plug is not plugged in tightly after modification or maintenance;

4. Inexplicably turn on the engine fault light and so on.

The above conditions do not affect the driving of the car, if it is an emission failure, the mixture combustion is not sufficient, and the power will be slightly insufficient. In the case of an unaffected operational failure, it has little or no impact on the vehicle. The above faults can be easily eliminated by computer detection, some need to replace or clean accessories, while others only need to clear the fault code.

There are also some engines that turn on the fault light, ignore it, and automatically disappear when it is turned on. There are also some vehicles when this kind of fault occurs, you can turn on the power by inserting the key, do not turn to the step of self-test light, and then step on the accelerator, then turn off the power, and then start directly to eliminate the light failure.

If it is a major failure, it will be accompanied by engine weakness, large shaking, high water temperature, and multiple fault lights on the dashboard, so you need to stop the car and turn off the engine and wait for professional rescue. If only the engine fault light is on, the rest are relatively normal, you can ignore running for a period of time, some will be automatically eliminated, if you have not eliminated it can be driven to the maintenance site to solve it.

How to eliminate the car engine fault light after maintenance? If you know what the fault code is, and the symptomatic repair, there should be a fault diagnosis, also use fault diagnosis, you can easily eliminate it, if there is no fault diagnosis instrument, you can use the power off method to cut off the long-connected power supply of the engine control module, unplug the fuse of the bed power supply, wait for a minute, and then power on for testing.

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Hello dear, the following answers have been made to your questions, and I have helped you sort it out! That's it, dear!

The way to deal with the car's engine failure light is on:

1.Cleaning the entire fuel system with fuel additives;

2.Add higher grade gasoline after engine cleaning;

3.Improve the cleanliness of fuel with first-class fuel additives;

4.Replace the three-way catalytic converter.

After the repair is complete, use a fault diagnosticator to clear the fault** or unplug the power supply fuse from the ECU.

More than a minute.

If it is repaired, the engine fault light can be extinguished by decoding it with a special computer, and some also need to be matched.

There can be many reasons why the engine fault light is on, and professional diagnosis and repair are required to find out the specific cause and solve the problem. If the engine failure light is on, go to a workshop or professional car repair shop for inspection and repair as soon as possible.

1. The quality of automobile fuel is unqualified.

If the engine fault light on the dashboard of the vehicle is on shortly after the vehicle is refueled, then it is generally because the oil is not added correctly, the quality is poor, and it does not meet the standard, which leads to insufficient combustion of the oil-gas mixture when the engine is working. This may not affect the safety cornering rules, but it will cause some damage to the engine.

2. Oxygen sensor failure.

At present, there are generally two oxygen sensors installed on the car, one before and after the three-way catalytic converter, which is used to detect the air-fuel ratio of the engine under different working conditions, and at the same time, the front is to provide a signal for the ECU driving computer to adjust the amount of fuel injection and calculate the ignition time. The latter is used to test the working quality of the three-way catalytic converter. If there is a problem with one of them, or if the plug is damaged or loose, it will cause the mixture to be too thin or too thick, and the engine failure light will also come on.

3. The air flow sensor is faulty.

If the air flow sensor is not working properly, the ECU will not get the correct air intake signal, and the problems will be similar to the above, and the engine will not run properly.

4. Carbon deposition in spark plugs.

Carbon deposits in the spark plug will cause abnormal phenomena such as difficulty in starting, unstable idling, excessive exhaust gas, and increased fuel consumption, and the engine fault light will also be on.

5. Engine knocking.

If the vehicle is detonated, the vehicle will be weak, noisy, and in serious cases, there will be a sound of cylinder knocking. At this time, the vehicle's engine fault light will also turn on.

6. The water temperature sensor is damaged.

If the water temperature sensor is damaged, the air-fuel ratio will become thinner or thicker, which will cause the engine to work abnormally and cause the engine failure light to turn on.

7. The engine lacks cylinders.

After the engine lacks cylinders, the vehicle will have large fuel consumption, black smoke, weak car acceleration, serious shaking, and increased engine noise.