The car engine ran 5000 kilometers and there was an engine failure, the light was on, is the engine

There are many possible causes of engine and exhaust system failure lights, which can be 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 it is an oxygen sensor.

and so on. In addition, it is recommended to check the front and rear oxygen sensors first, this thing is broken, the initial appearance is shown in the instrument to show that the engine fault light is always on (or occasionally flashing), but the car can barely drive for a short time; If it is not repaired for a long time, the computer (ECU) of the electronic fuel injection system will not be able to obtain the information of oxygen concentration in the exhaust pipe, so it will not be able to feedback and control the air-fuel ratio, which will increase the fuel consumption and exhaust pollution of the engine, and the engine will have unstable idling, lack of fire and surge.

and other fault phenomena. Therefore, it is necessary to troubleshoot or replace it in a timely manner.

Generally, today's cars have two oxygen sensors at the front and rear, which are in the three-way catalytic converter.

The front and rear parts should be replaced in time to find out the faulty one. The failure of this product is mostly found in the blending of gasoline (ethanol gasoline) of different grades and different regional types.

etc.), or add fuel treasure.

etc. If it's an oxygen sensor problem, deal with it as soon as possible, don't delay. In 4s, plug in the computer and measure the exhaust gas flow data feedback.

Go to the store and get a computer to read. It's useless for you to ask here.

The computer doesn't read, do you know what the problem is? If the gasoline cap is not properly covered, the engine failure light will also appear.

Are you a new car? I suggest you go to the store and have a look.

Will the engine failure light turn on and disappear automatically if left unattended? There are two scenarios!

In the first case, there is an occasional failure of the engineThe so-called occasional failure is equivalent to the mobile phone crash, freeze, computer black screen, etc., just shut down and restart. The same goes for the engine electronic control system, when the instrument shows the engine fault light prompt,Turn off the engine and restartCan. If the fault light is off and in subsequent drivingIf it doesn't light up anymore, you don't need to pay attention to it；If the engine fault light is still lit after the vehicle is restarted, you need to go to the after-sales service station to deal with the fault.

In the second case, there is a permanent failure of the engineThe instrument has a fault light warning prompt,The fault lamp still exists after the ignition is turned off and restarted, and the fault lamp will not disappear automatically at this timeInstead, it is necessary to use a fault diagnostic instrument to read the content of the fault code, and then find the cause of the fault code and repair it to completely remove the engine fault light.

There are more than a thousand reasons for the engine failure light to be on, from P0001 (open circuit of fuel regulator control circuit) to P0999 (high control voltage of shift solenoid valve), it can be seen that each fault code has an actual fault corresponding to the engine, and the appearance of each fault code will cause the engine fault light to be lit, coupled with the distribution of different brands and car series, the reasons are varied. So here, I will only list some common reasons that cause the engine failure light to turn on.

Damage to spark plugs and ignition coils:These two parts are one of the most likely reasons for the engine failure light, the spark plug is a consumable part, which needs to be replaced regularly, and the ablation of the electrode will cause the ignition energy to become weak, which will affect the combustion of the mixture, resulting in insufficient power and the fault lamp is lit.

Throttle carbon deposit:If the vehicle is used for too long, carbon deposits will be deposited around the throttle body, which will increase the air resistance and reduce the density of the air entering the cylinder, which will affect the formation ratio of the mixture, causing the mixture to be too thick or too thin, and causing the fault lamp to be lit.

Oxygen sensor poisoning:When a vehicle is fed with low-quality gasoline, the oxygen sensor will not be accurate in detecting the exhaust gas, and the collected error information will be communicated to the ECU, which will light up the fault light. In addition, low-quality gasoline will also cause the efficiency of three-way catalysis to become low, causing the engine warning light to be lit.

Insufficient fuel pressure:If the gasoline filter element is not replaced for a long time, it will cause the oil circuit to be blocked, resulting in a drop in fuel pressure, which will affect the formation of the mixture, and then make the fault lamp light up for early warning.

How to solve the problem of engine failureWhen the engine has a permanent failure, it needs to be solved at the repair station. If left unattended for a long time, it may cause a decrease in vehicle torque output, idle shaking, weak acceleration, high fuel consumption, and serious carbon deposits. Heavy may lead to the risk of pulling the cylinder, holding the shaft, top valve, etc., but the gain outweighs the loss. In addition, when going for maintenance, it is not simply to clear the fault code, but to find the cause of the fault code and deal with it, otherwise it will be lit again.

It will disappear automatically, but try not to do it, because it may cause traffic accidents after a long time, and if you encounter such a problem, you should deal with it in time.

Yes, if this happens, leave it alone, and it will disappear after a while.

It will definitely not disappear automatically, because this is a fault problem of the engine, and if it is not repaired, it will definitely not disappear by itself.

Of course not. If you leave it unchecked, your car has a safety hazard and there is a high possibility of traffic accidents.

Cleaning the throttle or intake pipe is too dirty. Running had no effect on the engine, but the fault light stayed on. I've encountered it too!

There is a problem with the engine electronic control system, and the detection computer needs to read the fault code.

As a kind of automobile indicator, the engine fault light is used to show the working status of the engine, which is divided into red light or yellow light. First of all, let's introduce the reason why the fault light is on. The first is that there is a problem with the oxygen sensor.

When the oxygen sensor is displaced or severely damaged by a violent collision, it causes the engine to illuminate with a yellow fault light.

But generally this situation is not easy to occur, at this time we can check whether the plug of the oxygen sensor is loose. In addition, the oxygen sensor is used to monitor the combustion status of the engine, if the combustion is not sufficient, and the oxygen after exhaustion is excessive, then it will be fed back to the ECU to intelligently attract the attention of the owner.

The second scenario is that the gasoline is of poor quality. This is mainly reflected in the fact that the fuel quality does not well match the requirements of the engine to give full play to its performance. The third reason is that there is a lot of carbon build-up in the cylinder, which is usually found in cars that often drive at low speeds in urban areas.

Once this is serious, it may also cause engine knocking, then the car will have a decrease in power, abnormal shaking and noise, and even the phenomenon of knocking on the cylinder, at this time, the fault light will definitely give a warning.

There is another situation that arises"False failures"。On the one hand, it may be caused by insufficient battery power; On the other hand, it may be that some equipment has been accidentally touched and it has issued a warning, or the computer cannot read the engine data. After these situations occur, it is always a little uneasy to judge by feeling alone, and the correct way is to use professional instruments to detect whether there is a failure.

If you encounter the problem of the fault light on when running at high speed, you can first observe whether the engine is obviously abnormal, and the most direct way is to see if there are other indicators that are also on at the same time. Generally speaking, if the yellow light is on, and it does not substantially affect the power of the car, you can drive cautiously at low speed first, and find time to go to the 4S store to check it after getting off the highway.

If a minor maintenance problem is detected, the carbon deposit can be cleaned up in time or replaced with fuel that matches the engine specifications. The best result is that after using a computer detector to detect, it is found that it is a fake fault code, so it can be cleared after simple processing.

There are many reasons why the engine failure light is on. As long as it runs normally, you stop to check whether the engine has any abnormal noise, whether there is oil leakage or something, turn off the engine, and then run again when it will restart, and see if it is still bright. I also had this light on not long ago, and it was fine after the ignition was turned off.

The next day, I found that it was bright again, and I didn't worry about running to 4s to check the fault code, as if to say that an oxygen sensor in the air intake system was not in contact.

Summary. Hello, I am your exclusive service technician, attentive, attentive and careful to help you solve the problem of using the car, driving more than 20,000 kilometers of the car engine failure, as long as the warranty period is available, the warranty maintenance is handled, the main consideration of the following reasons. The first common aspect is whether the ignition defect caused by the addition of ordinary inferior gasoline to the oil quality problem is a failure.

The second common problem is that the ignition system failure mainly includes leakage of the ignition coil, too large gap of the spark plug, and poor ignition. The third aspect is mainly the group side, which mainly includes the problem of poor combustion caused by throttle deposition, fuel injector deposition and in-cylinder carbon deposition. Fourth, I would like to consider the sensor, which is generally the oxygen sensor.

Hello, I am your exclusive service section including holding no service technician, attentive, attentive and careful to help you solve the problem of using the car, driving more than 20,000 kilometers of the car engine failure, as long as it is within the warranty period, it can be repaired and repaired, and the following reasons are mainly considered. The first common aspect is whether the ignition defect caused by the addition of ordinary old quality gasoline is a malfunction if the oil quality problem is added to the ordinary old and only inferior gasoline. The second common problem is that the ignition system failure mainly includes leakage of the ignition coil, too large gap of the spark plug, and poor ignition.

The third aspect is mainly the group side, which mainly includes the problem of poor combustion caused by throttle deposition, fuel injector deposition and in-cylinder carbon deposition. Fourth, I would like to consider the sensor, which is generally the oxygen sensor.

But what happens when you eliminate it with a computer?

The first common thing to know is whether the ignition defect caused by the addition of ordinary inferior gasoline to the oil quality problem is whether the ignition failure is dry. The second common problem is that the ignition system failure mainly includes leakage of the ignition coil, too large gap of the spark plug, and poor ignition. The third aspect is mainly the problem of poor combustion caused by the carbon deposition of the throttle, the carbon deposition of the fuel injector and the carbon deposition in the cylinder.

Fourth, I would like to consider the sensor, which is generally the oxygen sensor.

What is the reason for the recurrence of the elimination?

That is, the fault is real.

Will there be a fault light when the three-way catalytic cleaner is added?

There will also be a faulty light, in which case you should run and take a look.

Will the car run normally if there is a faulty light that will affect it?

Faulty lamps will not be affected.

Will the car be affected when it runs?

The vehicle will not be affected when it runs.

Hello dear! Thank you for waiting, the engine failure light is lit when running at high speeds, and the main consideration is that the internal combustion of the engine is not good. If you are still driving at high speed, then the fault, the light may cause the vehicle power to drop and fuel consumption to rise, but as long as the fault light is lit and there is no other fault phenomenon, you can still continue to drive to the service area, after driving to the service area, you can find the repair shop in the service area, use the computer to read the fault, and then do the corresponding inspection and maintenance according to the fault.

For example, when driving at high speeds, due to the high combustion requirements of the vehicle, the failure light will be lit if the vehicle burns badly. Kiss! I hope my ability to help you In addition, you can also click on my avatar to follow me, so that if you have any questions in the future, you can click on my avatar to consult me!

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Engine failure lights are usually lit for the following reasons:

First, the combustion state is not good. Poor engine combustion condition is the main reason why the engine failure light is on.

Second, the engine knocks. It is usually divided into three situations:

1. The car is weak;

2. The car is weak and the engine noise is too loud;

3. There is obviously a 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 reason why the engine failure light is on:

1. The fuel quality is not good;

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

1. Identify the cause of the failure. For diagnostics of such faults in which the engine does not start, the battery should be tested first. It is necessary to find out if the engine does not start because the battery is insufficient.

2. Detect ignition timing. Timing belt slippage is the root cause of the failure that there is no electric spark and the engine cannot start.

3. Detect the starting system. For faults such as engine failure, the first thing to do is to detect the circuit in the engine starting system. From the perspective of the most basic composition, the mountain distribution circuit of the starting system generally includes the following basic parts, that is, the battery, the starting motor and the cable connecting these components.

Of course, in addition to this, ignition switches, starter relays or solenoid coils, as well as in-vehicle anti-theft systems, are also important components of the starting system.

4. Detect the quality of electric sparks. Once the circuitry of the starting system has been tested and proven to be fine-tuned, attention should be focused on why the engine is not working. Generally speaking, the ignition system of the engine is tested first, which is also the easiest inspection job.

In early ignition systems, you could easily remove the ignition coil and use a spark detector to detect if the spark was normal. When choosing an EDM detector, it is preferable to have an adjustable detector rather than a fixed design, as it allows you to adjust the detector to a smaller gap so that you can tell if there is no spark at all, or if there is a spark but it is weak.

5. Detect the fuel system. The diagnosis of the fuel system can be divided into two parts: the diagnosis of the fuel supply system and the diagnosis of the injector circuit system.

The fuel supply system can be detected by measuring the flow and pressure of the fuel. The best way to measure fuel flow is to inspect the line when there is a load in the fuel supply line.