What is the reason why the new car has two engine failures?

There are generally several reasons for the engine failure light: the fuel supply system, ignition system, air intake system, exhaust system and various sensor components are faulty. You can use the elimination method to eliminate one by one, and if you encounter the engine light during driving, it is best to go to the repair shop to check the fault code.

After the engine fault light of the new car is on, first pay attention to whether the engine is running normally, whether there are problems such as shaking, black smoke or difficult to start, and if so, try not to start again. If the engine is running normally and can be driven normally, please go to the service station as soon as possible to find out the cause.

What should I do if the engine fault light of a new car is on.

The reason for the fault light is well confirmed, and the service station can easily read the fault code as long as it is connected to a portable diagnostic instrument, and obtain the fault information for targeted repair. If the engine is running normally, the owner can also try to gently plug in the wiring harness connectors, which may be caused by a false connection somewhere, or repeatedly dial the key to the ON gear to see if it can be eliminated.

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

1. The car can't start, this 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.

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

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

First of all, it needs to be clear that when the ignition switch is turned on, the dashboard indicator light will be lit, which is the self-diagnosis of the car system, and it will automatically go off after a period of time.

1. Engine fault lamp.

Causes: Poor combustion state, engine knocking, poor fuel quality, excessive carbon deposits in the engine.

Second, the battery fault lamp.

Reason: Battery loss and scrapping, power system failure.

3. Oil warning light.

Causes: insufficient oil volume, high engine temperature, improper oil selection, blockage in the oil pipeline.

Fourth, the tire pressure warning light.

Cause: Broken and leaky tires, damaged tire pressure sensors.

5. Brake system fault lamp.

Reason: The handbrake is not put down, the ABS function fails, the brake fluid does not meet the requirements, and the braking system is abnormal.

6. Water temperature alarm light.

Causes: Engine water temperature is too high, lack of coolant, thermostat failure, water temperature sensor damage.

In summary, the above is the more common car fault light, the new car fault light can reflect the situation to the 4S shop, and the one within the warranty period can be replaced or repaired free of charge.

Poor gasoline quality (such as excessive impurities, high gum content, and high sulfur content) will not only affect the insufficient combustion of the mixture in the cylinder and cause excessive carbon deposits, but also block the oil circuit and corrode parts (such as fuel pumps, etc.). At the same time, it affects the concentration of the normal mixture, and finally affects the engine failure problem lamp lighting and the occurrence of trembling vibration.

Lambda sensor malfunction issues.

Most cars are equipped with two oxygen sensors, one at the front and one at the front and one at the front of the three-way catalytic converter. The function of the front oxygen sensor is to check the air-fuel ratio of the engine under different operating conditions, and at the same time, the ECU computer adjusts the amount of fuel injected and calculates the ignition time according to this signal.

The key to the rear is to check how well the three-way catalytic converter is working! Of course, if the oxygen sensor is damaged or the sensor plug is damaged or loose, it will affect the mixture is too thin or too thick, then it will cause the fault problem light to be on.

Poor combustion state of the engine is the main reason for the engine failure light on, other reasons:

1. The engine cannot rotate or rotates too slowly due to the failure of the starting system.

2. The ignition system is faulty, and the ignition time may be incorrect.

3. The reasons for the high and low engine speed caused by the failure of the fuel injection system include the failure of the fuel injection disc system, the failure of the ignition control system, and the failure of the air intake system.

4. The main reason for poor idle or stalling of the engine is the failure of the idle control system.

If the general engine fault light is on, it is possible that the state of combustion is not particularly good, and the state of the general engine is not good, which is the main reason for the amount of engine failure light. There is also an engine guarantee that will also cause the fault light to be on, such as the car is weak, and the engine noise is too loud, or there is a significant knocking sound. So it's still necessary to do some regular maintenance and repairs.

Hello owner, the new car engine fault light lights on indicate that the engine is faulty, the new car is a vehicle factory quality problem, it is recommended that you go to 4S in time to claim for maintenance, I hope it can help you, I wish you a happy life! [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Hello, the fault light of the new car is an occasional failure, and it can be cleared. [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Use the detector to check the fault code, and it is occasionally clear [If there is a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

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 and stop the 4S shop for further investigation, because the intake and exhaust may cause the engine failure light to be on, and the specific problem is analyzed in detail.

This is commonly referred to as the yellow engine fault lamp, also known as the EFI system fault lamp. 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.

There are two situations when the engine fault light is on: the yellow symbol light indicates that the engine is faulty, but the fault does not affect the normal operation of the engine, but it must be maintained. The red symbol light indicates that the engine has a serious fault, and it needs to be repaired immediately under normal circumstances, if it is in special road conditions, it can be used in an emergency, but it is necessary to pay attention to the working status of the engine at all times.

Call ** to the 4S store and check it out as soon as possible.

Look at the odometer sensor! In new cars, sometimes the odometer sensor will turn on! [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Don't worry about the failure of the new car in 3 months, let's take a look at the specific fault phenomenon. Suddenly the engine fault light turned on, and the after-sales reply should be a fuel quality problem (all the way to add 95 gasoline, to the 4s inspection after the conclusion is also a fuel problem, it is recommended to buy 4s fuel mixture, drive home a week after refueling and then add fuel mixture, the next day the engine fault light is on again, what is the reason, how to solve it. Failure analysis This situation has nothing to do with the quality of the car, if the oil circuit is too dirty, the use of detergent once is not clean, it needs to be done many times.

Because the initial oil of this kind of imported car may deteriorate very badly, the reason is that the initial oil is transported to the customer in the initial stage, the fuel time is too long, the initial fuel is seriously deteriorated, and a large number of colloidal impurities appear, which finally leads to the continuous contamination of the subsequent fuel, similar to bacteria can continue to corrupt new fuel, resulting in a long-term lack of fresh fuel can be used. The fault light will only light up because of the accumulation of multiple combustion emission failures to a certain number of times, although it is a new car, but it is unavoidable that the problem of the initial fuel is installed. Because the initial fuel will deteriorate very badly, it will become a fuel containing a large number of oil bacteria, constantly polluting fresh fuel, and emission failures will occur many times, but they are not displayed, only the data stream exists, and when it is accumulated to a certain number of times, the emission failure light will be lit, and the car has been problematic many times.

It means that the fuel tank is too dirty, a lot of gum impurities, and the moisture density is high and precipitated underneath. Then the fault can be reported, which means that there is no problem with the sensor. But why is the fault light on after refueling, this is most likely because the impact force of refueling is relatively large, and after mixing a lot of colloidal impurities at the bottom of the fuel tank, it will break out of an extremely bad burning time period, and finally the light will be turned on after more times.

Solution Use the fuel additives of the national VI standard, after cleaning 5 times in a row and thoroughly cleaning, the oil circuit is clean and the combustion is good, there will be no more such failures. There is also such a situation in the circle of car friends, and it will be completely healed after cleaning it a few times in this way. Because the probability of bad oil deterioration is high, we have analyzed it above, so it is best to clean it thoroughly to prevent a lot of unfavorable conditions for the engine in the future.

Clean oil circuits have nothing to do with new and old cars, but are directly related to the severity of fuel deterioration before. In addition, the use of additives and the use of effective additives are two different things, it is best to use this kind of additives suitable for domestic oil products, targeted and strong effect. Imported additives are developed for exporting countries, and there is a big gap between the situation of domestic oil products.

Hello, I am helping you to inquire about the relevant information, please wait for a while and get back to you immediately.

Hello dear, here for you to find out. The solution to the failure light of the car engine is as follows: 1. Check the status of the car engine in time; 2. Check the status of the sensor, air flow sensor and spark plug parts of the car; 3. Check whether the car has detonation; 4. Check whether the ignition coil is faulty; 5. The engine has serious carbon deposits.

The reasons for the failure light of the automobile engine are: 1. The poor quality of gasoline leads to insufficient combustion of the mixture in the cylinder, resulting in carbon deposits; 2. The mileage of the engine is too long, and the working characteristics of the spark plug are weakened; 3. Aging of vehicle machinery; 4. Water temperature, crankshaft position, air flow, inlet air temperature, oxygen sensor damage, poor contact or signal interruption.

It depends on the circumstances.

If the electric door lock is opened, this situation occurs before it is started, which is the system self-test state, and the indicator lights of the instrument panel disappear when the ignition is started, indicating that there is no problem.

If the fault light is still on when it is started, this is not necessarily a real fault, but it should be taken seriously. You can give 4S points **, let the master come and check it, if they say let you drive over, then drive over, because it is free of charge for maintenance during the warranty period.

Hello, I have also seen someone mention this situation you said, maybe the oil problem, maybe the induction problem, maybe the engine really has a problem, but generally according to the text description of the words it is difficult to find and find the specific reason, the best is to find a nearby professional and reliable maintenance shop or after-sales call the master to actually check, only the specific inspection can be effectively solved.

Hello, the current number of people consulted may not reply in a timely manner, if it is a vehicle failure problem, it is recommended to use the computer to detect the specific cause of the failure, search for "car master" can consult car problems at any time, 24 hours ** answer.

Good evening, the EFI car electronic control system is mainly composed of sensors, actuators, computer board wiring harnesses, fault lamp assembly, ** abnormal will light up the fault lamp, at this time you need to use the decoder to call the fault code for troubleshooting. This part of the old car is still new.

If there is no malfunction, it is generally caused by bad fuel and needs to be used with 97 gasoline.

There are too many reasons that induce engine failure lights, such as poor engine condition caused by bad gasoline oil quality can also cause this! There is also the possibility of a failure of one of the engine's sensors.

The main reason for the engine light of the new car is related to the circuit, and the computer is used to identify the fault code to determine the problem.

Hello, the fault light of the engine is on, there are too many reasons, it is recommended to go to the four S store to test it with a computer. Most of it is due to the fuel emission system, or the quality of your gasoline

Hello, there are many reasons why the engine failure light is on, and bad oil will also cause the engine failure light, so it is recommended that you go to the store to check it.

Hello, the engine failure light of the new car is on, it is best to go directly to the 4S shop for direct inspection and maintenance, if the vehicle is powered on for self-inspection, the ignition is generally extinguished, this is normal.

Hello landlord. If the fault light is on, it is necessary to connect the diagnostic instrument to see what the specific fault code is, so as to solve the problem more efficiently. It is recommended to go to a 4S shop or repair shop to have a look.

Hello, the engine fault indicator of the new car needs to be lit up The old car is the same, you need to use the computer diagnostic instrument to detect the specific fault code, and repair and eliminate the fault according to the fault code prompt.