It often happens that on the dashboard in the passenger compartment of a car equipped with electronic control, the lamp of the emergency sensor comes on. If the car starts up, continues to work, but the check of the engine lights up, this means that the inclusion occurred in emergency mode... Some models modern machines(Audi, BMW, Mercedes-Benz, Porshe, VW) are equipped with a system capable of self-diagnostics, decoded errors are sent to the information panel. But drivers do not always manage to understand why the check for engine malfunction caught fire.
To start the engine, the driver turns on the ignition. If the check of the engine flashes at the same time, this should not cause concern, since it will soon go out. But a burning signal when the motor is running indicates a malfunction in its operation.
In the event of a malfunction in the operation of the power unit, an error is recorded in the memory of the control unit in the form of a coded signal. In this case, the engine check is lit on the dashboard. If the car does not provide automatic diagnostics, you need to connect a device for scanning to a special connector. The scanner reads the code and provides a detailed explanation of the error.
In the process of development of electronics, the indicator Check Engine has evolved from a simple malfunction sensor into a multi-function signaling device. A modern check engine, when flashing, reports the following inconsistencies:
- improper composition of fuel mixtures;
- malfunctions of settings in the ignition system;
- sensor failures.
It is also responsible for reporting issues not related to power unit... To identify the place of occurrence and the nature of the breakdown, the master will need professional knowledge, experience, special devices and tools.
Important: The electronic unit ECU gives a command to blink the indicator, as a result of detecting errors of varying degrees of complexity. Among them, there are problems, both serious and minor. For the purpose of diagnostics, it is recommended to suspend operation vehicle... Experienced car owners often independently determine the reason for including the check, without waiting for a visit to the service station.
Signs of major malfunctions and causes of the indicator signal
If, while the car is moving, the Engine check comes on after refueling at a gas station, the most likely reason is the inadequate quality of the filled gasoline. In this case, the following symptoms are observed:
- Decrease in power.
- Interruptions in engine operation (stalls).
- Detonation due to incomplete combustion of fuel.
- add a portion of higher quality fuel to the tank;
- drain recently filled gasoline, clean the fuel system.
If the check does not want to go out after the cause has been eliminated, it is required to delete the error recorded in the device memory using a special computer program.
Checking the oil level and its condition
The next most important reasons for the occurrence of a signal are overheating of the motor, a decrease in the level lubricating fluid in the internal combustion engine. It is recommended to check the engine temperature. If there is no overheating, check the volume and condition of the oil. After checking the level, it is necessary to top up the missing quantity lubricant... Check the quality and composition with a clean paper napkin engine oil according to the following criteria:
- Colour.
- Consistency.
- The presence of mechanical impurities.
- The smell of burning.
If everything is in order with the quality and quantity of oil, the engine starts to eliminate unusual sounds, noises when operating as in the mode idle move and under load.
If non-standard noise effects of a running engine are detected against the background of a burning check, it is recommended to send the car to the nearest service company. Moving the car on your own is not recommended; delivery is carried out by towing or in another convenient way. Further operation can lead to serious damage and costly repairs to the elements of the power unit.
Blinking indicator and triple engine
When the check flashes and the engine troit at the same time, it is necessary to inspect the elements of the ignition system:
- wiring;
- coil.
The triple effect occurs when only three combustion chambers work instead of all four. The engine begins to triple in the absence of injection of the air-fuel mixture into one cylinder.
Used and dirty spark plugs also cause the Check Engine warning light to illuminate. In order not to think for a long time how to remove the engine check, you just need to clean or completely replace the outdated spark plugs with a new set.
Testing the ignition coil is reduced to measuring the resistance at the terminals and testing for the ability to create a blue spark.
What to do if the engine check caught fire due to failures in the fuel supply system
In case of violations associated with the flow of fuel into the cylinders, it is recommended to check the condition of the spray nozzles. Their holes must be cleaned, rinsed, if necessary, completely replaced with new devices.
A decrease in pressure in the fuel system is caused by malfunctions:
- Gasoline pump (in carburetor, injection engines).
- Fuel filter
- High pressure fuel pump (in diesel).
If the ignition of the check is caused by a failure of the catalytic converter, drivers simply remove it from the exhaust system and then turn off the corresponding sensor (oxygen).
How to reset a check engine error
In the event of critical errors in the operation of the engine, the information is recorded in the ECU memory and is not deleted on its own even after the defect has been eliminated. In this case, the check continues to glow. To reset the recorded error with their own hands, experienced car owners perform the following operations:
- warm up the motor to operating temperatures;
- disconnect the terminal on battery for a while (from 5 to 15 minutes);
- restore the connection with the terminal;
- insert and turn the ignition key before starting (while all indicators on the devices are on);
- wait one minute;
- turn the key in the opposite direction.
Most often, such actions lead to the desired result, the error code disappears from the memory of the ECU unit. The check stops glowing after turning on and running the engine in idle mode for three minutes.
If the terminal disconnection method does not work, the indicator continues to blink, the error is removed from the memory of the control device using special computer programs through the OBD diagnostic connector of the pinout.
The control unit can also cause the check signal to turn on if individual elements of the ECU partially or completely fail.
date: 03/20/2018
Engine check caught fire - reasons
The main reason for the indicator to light up is an engine error is the fixation of serious problems by the control unit in the engine. Movement in this case is possible if the check of the engine lights up and the indicator does not flash, the behavior of the car itself remained unchanged, as well as the engine power and its response to pressing the gas pedal remained unchanged, as well as if other error indicators indicating the presence of any or problems, "they are silent." It is also worth paying close attention to the level of the coolant and oil; their number should not change dramatically. But even in this case, it is worth getting to the car service as soon as possible.
Movement when the indicator lights up - engine error is prohibited in several cases:
- The car changed its behavior on the road;
- The power of the motor has decreased, you feel its vibration;
- You smell burnt;
- The engine service light works in intermittent mode (blinking);
- The emergency oil level indicator came on;
- The lamp responsible for the engine overheating warning came on.
Engine error can cause serious damage. And, sadly, a car dealer may refuse to make free warranty repairs.
Check Engine is on - what to do?
In the event that the emergency oil level indicator lights up while driving, you should immediately turn off the engine. After that, it is necessary to check the oil level, and if it is below the permissible value, it is worth adding oil and trying to start the car again. If, adding oil, did not change the situation (the engine check is still on), in this case it is worth contacting a car service. The main thing to remember is that in no case should you try to get to the service center in your car, if you do not want your engine to be seriously damaged when working without lubrication.
The onset of overheating can be signaled by the indicator, which is responsible for warning the driver about a high temperature of the liquid in the expansion tank, and the displacement of the indicator, which reflects the temperature of the liquid, towards higher values. If the pointer does not reach the red zone, which means that expansion tank still has a sufficient supply of liquid, and also did not show signs of "dangerous overheating", reduce temperature regime you can do it yourself by following a few simple steps:
- Reduce vehicle speed;
- Do not use an air conditioner;
- Turn on the heater to lower the engine temperature. If, after turning on the stove, the flow of hot air does not start, stop immediately. These are the first signs of "dangerous overheating".
In addition to the above-described methods of detecting "dangerous overheating", there are a number of others: the presence of steam emanating from under the hood of the car, a decrease in the engine power level, an empty expansion tank, a failure heating system when outside (cold) air begins to flow into the passenger compartment.
.
Asks: Smirnov Kirill.
Essence of the question: How to reset the "CHECK"?
Hello! I have a Hyundai Solaris, and the check is constantly on! I already drove to the station Maintenance and found out what the problem was. The first time they threw it to me, and now it appears again, while the behavior of the car has not changed in any way. Please tell me how I can reset it myself, because I don't want to pay for it again in the service.
If the CHECK lights up when the engine starts, then you should not worry. But if the check is on when the engine has already started, then you need to find out the cause of the error.
Diagnostics and removal of errors that occur on Hyundai Solaris may be needed by the vehicle owner in various situations when there is no desire to do this work in a certified service center.
It is not difficult to do this work, the main thing is to know what you can remove yourself errors related to the first level , that is, those that are not recorded in the ECU memory, which do not significantly affect the operation of the car and its devices. Because only a special dealer device (scanner - approx.) Can remove such errors, one of these errors is an error in the car's airbags.
When are errors removed on their own?
Among all the important problems on the Hyundai Solaris, some can be reset on their own after carrying out one or another repair.
So for example error codes with 301 on 304 , talking about a spark in one of the cylinders (the last digit of the error refers specifically to the cylinder - approx.).
If the error signals a misfire in the cylinder, first of all, they look at the state of the spark plug. In the photo, the candle is the culprit of this error.
Accordingly, when these gaps are detected, the ECU will give a signal in the form of a burning "CHECK", which cannot be removed without erasing the code or resetting the terminal from the battery.
This error is completely removed, only by replacing the non-working candle with a new one, after which the error will disappear by itself.
Self-dumping of a check on Hyundai Solaris
It is possible to reset errors on your own on Hyundai Solaris thanks to the OBD-II protocol and the presence of a special adapter with a diagnostic device, be it a smartphone or a computer that supports Bluetooth wireless technology.
In order to check errors on the car, we perform the following steps:
Scan Master standard error check and reset window
Diagnostic and error reset process without OBD-II
On Hyundai Solaris, you can diagnose and remove errors without even having any additional devices at hand.
Diagnostics (this method does not work)
The method described below runs all over the Internet. We checked on our editorial machine. He does not work. We cannot delete the method, as some owners may think that it works.
Rebuttal on video:
Removing errors
- In order to remove the error, it is necessary to do the entire above-mentioned course of work from 1 to 5 points, and without turning off the ignition, press the "gas" again.
- After that, turn off and turn on the ignition, start the engine.
- If the progress of the work was done correctly, the error should be removed.
As you could see for yourself, there is nothing difficult in removing the error on Hyundai Solaris yourself, no.
In the video, the check is burning and the Hyundai Solaris stalls
Many of us have faced such a problem as the inclusion of an indication of the engine icon (Check engine ...), the appearance of which scares the drivers of cars. Here are the 5 most common reasons why dashboard the check of the engine lights up.
The engine gauge icon usually appears without warning. The reason for the appearance of the Check engine cannot be immediately understood. Even if there is an auto diagnostics in the car (for example, in such cars as,), which scans all systems of the car for errors and, if any, displays a decryption on the information panel, the reasons for the appearance of the engine check will not be decrypted.
For most drivers, the appearance of this warning symbol on the instrument panel means that they urgently need to go to a car workshop to diagnose and eliminate the reason for which the engine check warning sign appeared. But in fact, in most cases, when the "Check" indication appears, it is possible, and in some cases, perhaps, to eliminate the cause on your own without a trip to a car service, which will save your money.
1. Replace the oxygen sensor (lambda probe)
The oxygen sensor in your car is part of the exhaust system exhaust gases, which controls how much oxygen is not burned out in the engine's combustion chamber. This sensor helps to monitor the fuel consumption of the vehicle. A malfunctioning oxygen sensor (lambda probe) means that the car computer receives incorrect data, which can significantly increase fuel consumption and reduce engine power. Most cars have 2 to 4 oxygen sensors. If you have a home car error scanner, then by connecting it to the car, you can easily find out which sensor needs to be replaced.
For what reason the oxygen sensor in the car becomes unusable: Over time, the sensor becomes covered with a layer of used and engine oil (oily soot), which reduces the accuracy of the sensor readings to regulate the gasoline mixture and distribute the optimal one. A malfunction of the oxygen sensor in the car leads not only to, but also to an increased content of harmful substances CO2 in the exhaust.
What needs to be done: If you do not change the defective car sensor oxygen, this can lead to failure of the catalyst in your car (may burst), which will result in costly repairs. The cost of new catalysts is very high due to the content of precious alloys in them. On some cars, there are several catalysts, the cost of which can go up to 90,000 rubles. So do not delay replacing the sensor. Although the replacement of the sensor and its cost is not very small, it is not commensurate with the cost of the exhaust gas neutralizer system. You can also save on replacement costs by doing it yourself. Many car manuals have detailed instructions how you can replace the oxygen sensor yourself. If you know where the oxygen sensor is, then it will not be difficult for you to disconnect the faulty "lambda probe" and replace it with a new one. Remember to pull with the replacement of this important element you can't pull!
2. Check the fuel filler cap
Many drivers in most cases, when the "check engine" indication appears, will think about serious problems in the car's engine, but will not even think to check the tightness fuel system, which can be broken due to a defect or insufficiently tightened neck cap fuel tank... This is a very common reason for the "Check" engine icon to appear.
The reason for the error: Leakage of the fuel system due to the passage of air, the fuel filler cap, will increase the fuel consumption of the car, for which the car diagnostic system will give an engine error by turning on the "Check engine" indication on the dashboard of the car.
What needs to be done: If, when the "Check" indication appears, your car has not lost power, and there are no sound signs of engine damage (knocking in the engine, hum, creaking, etc.), then first of all check the tightness of the gas tank. Your gas cap may be cracked or not tight enough. If the cover was not tight enough, then after tightening it all the way, continue driving the car for a while to see if the engine error disappears. To prevent the appearance of an engine check for this reason, regularly check the fuel filler cap. Remember to periodically replace the cover with a new one!
3. Car exhaust gas catalyst
The car catalyst helps the car to make the exhaust gas from the engine more environmentally friendly. It converts carbon monoxide and other harmful substances into harmless compounds. If your exhaust gas catalyst has become unusable, you will notice this not only when the engine badge (check) appears, but also long before that, when the car's power drops by 2 times. For example, when you press the gas pedal, the car, as before, will not have good acceleration dynamics.
Because of what the automobile catalyst can fail: if you regularly service your car, in accordance with the maintenance regulations of the car company, then the catalyst should not fail. The main reason for the failure of the catalyst is the untimely replacement of a faulty oxygen sensor, as well as irregular replacement of spark plugs at the end of the expiration date. When the oxygen sensor or spark plugs are faulty, the conversion of carbon monoxide in the catalyst into harmless chemical elements stops, which leads to overheating of the catalyst, which can be damaged as a result.
What needs to be done: If your catalyst has become unusable, then you cannot drive the car, since the engine will not work correctly, warning about this by an indication on the dashboard with an engine icon (check). Also, your fuel consumption will be greatly increased, and there will be no engine thrust. Although replacing a catalyst is a very expensive repair, there is nowhere to go from repairs. Although there is an alternative to replacing the catalyst with a flame arrester, this is not a 100 percent option. Unfortunately, if you are not an experienced auto mechanic, then you cannot replace a faulty exhaust gas catalyst yourself. In any case, you will have to go to a car repair shop. Remember that timely replacement of oxygen sensors and spark plugs protects your catalytic converter from damage!
4. Replace the MAF sensor
The mass air flow sensor regulates how much air needs to be added to the gasoline mixture to optimally ignite the fuel. The sensor constantly informs the vehicle computer of the amount of oxygen supplied. A defective MAF sensor will increase fuel consumption, increase CO2 levels in the exhaust gas, and reduce engine power and ride smoothness. Also, with a faulty sensor, poor acceleration dynamics is observed. In cold weather, a car with a faulty sensor will not start well.
What are the reasons for the failure of the mass air flow sensor: Most sensor failures are due to improper installation of the air filter during its scheduled replacement. Also, if you do not regularly change air filter As required by the vehicle manufacturer's recommended maintenance schedule, the MAF sensor may fail.
What needs to be done: In theory, you can drive for a long time with a broken MAF sensor (several weeks or months). But you will notice that the longer you drive, the more fuel consumption increases. Replacing a sensor in a car service is not that expensive, since the work itself does not take much time and is quite simple. The main costs are associated with the cost of the sensor, which for some car models can be 11,000-14,000 rubles if it is an original sensor or up to 6,000 rubles if it is an analog substitute. Self replacement the sensor is very simple. But due to the low cost of replacing the sensor, you can entrust this work to the master in the car service. Remember that it is necessary to regularly change the air filter, observing the vehicle maintenance regulations!
5. Replacing spark plugs and high voltage wires
Spark plugs in a car are the main parts for igniting the fuel mixture. With faulty spark plugs, the spark is incorrectly supplied to ignite the gasoline mixture. Defective spark plugs often have a lack of spark or an incorrect spark interval, which affects engine malfunction. If the spark plugs do not work properly during acceleration, especially from a standstill, you may feel small jolts.
What are the reasons for the failure of spark plugs: Most spark plugs in vehicles prior to 1996 need to be replaced every 25,000-30,000 kilometers... In newer cars, spark plugs last over 150,000 km. However, a variety of factors related to fuel quality and driving style can reduce these scheduled spark plug replacement times.
What needs to be done: If your spark plugs have not changed for a long time, or you feel dips associated with ignition in the engine, then you must immediately replace them with new ones without delay. Do not try to save on untimely replacement spark plugs, since the cost of the plugs is not very expensive, as is the work of replacing them. Replacing old spark plugs will improve engine performance and reduce vehicle fuel consumption. It is quite easy to change spark plugs on your own. Mostly they are easily accessible under the hood of the car. You need an ordinary candle wrench to remove the spark plugs from the engine. It is also advisable to monitor the status high-voltage wires, as over time they can become unusable and allow electricity to pass, which is transmitted to the spark plugs, which will reduce the strength of the spark. Remember that regular replacement of spark plugs, in accordance with your car's maintenance schedule, keeps your exhaust catalyst from damage, and also improves engine performance!
