Many of us have come across such a problem as the inclusion of the engine icon indication (Check Engine ...), the appearance of which scares car drivers. We offer you the 5 most common reasons for which dashboard Engine check lights up.
The appearance of the engine indication icon occurs, as a rule, without warning. The reason for the appearance of Check Engine cannot be immediately understood. Even if there is a car diagnostic in the car (for example, in such cars, as,), which scans all the car systems on errors and when they are presented, displays the decryption to the information panel, the causes of the engine check will not be decrypted.
For most drivers, the appearance of this warning icon on the instrument panel means the need to urgently go to the auto repair shop to diagnose and eliminate the reasons for which the warning sign "engine check" appeared. But in most cases, in most cases, when the "Check" appears, it is possible and in some cases, it is possible to eliminate the cause independently without a trip to the car service, which will save your money.
1. Replace oxygen sensor (lambda probe)
Oxygen sensor in your car is part of the system of working out exhaust gaseswhich controls how much oxygen has not burned in the engine combustion chamber. This sensor helps to control the fuel consumption of the car. Fault oxygen sensor (lambda probe) means that automotive computer Gets not the right data, which can significantly increase fuel consumption and reduce engine power. Most cars have from 2 to 4 oxygen sensors. If you have a home car scanner Errors, then you, by connecting it to the car, can easily find out which sensor must be replaced.
For whatever reason, the oxygen sensor in the car comes into disrepair: Over time, the sensor is covered by a layer of spent and motor oil (oil soot), which reduces the accuracy of the removal of the sensor indicators to regulate the gasoline mixture and the distribution of optimal. The oxygen sensor malfunction in the car leads not only to, but also to elevated content harmful substances CO2 in the exhaust.
What needs to be done: If you do not change the faulty automotive oxygen sensor, then this may lead to the failure of the catalyst of your car (can burst), which will turn into expensive repairs. The cost of new catalysts is very high due to the content of precious alloys in them. On some cars, catalysts several pieces whose cost can reach up to 90,000 rubles. So do not pull with the sensor replacement. Although the sensor replacement and its cost is not very small, but it is incommensurable with the cost of the exhaust gas neutralizer system. You can also save on a replacement by making it yourself. In many manuals for car operation detailed instructionsHow to independently replace the oxygen sensor. If you know where the oxygen sensor is located, then you will not be much difficult to disconnect the defective "lambda probe" and replace it with a new one. Remember that pulling with the replacement of this an important element It is impossible to pull!
2. Check the fuel tank neck
Many drivers in most cases, when displaying the "engine check" appears, will think about serious problems in the car engine, but do not even think to check the tightness fuel systemwhich can be broken due to defect or not sufficiently tightened fuel tank. This is a very common cause in the appearance of the engine "Check" engine.
Cause of error appearance: The leakage of the fuel system due to air transmission, the fuel tank fuel cap will increase the fuel consumption of the car, to which the car's diagnostic system is issued an engine error by turning on the "Check Engine" indication on the instrument panel of the automotive instruments.
What needs to be done: If, when the "Check" appears, your car has not lost power, and there are no sound signs of engine damage (knock in the engine, hum, creak, etc.), then check the tightness of the gas tank. It is possible that the lid of your fuel tank has cracks or is not tightened enough. If the lid was not tightened enough, then tightening it to the end, continue the car by car for a while to watch the engine error disappear. In order to prevent the occurrence of the engine check for this reason, check the fuel tank neck cover regularly. Remember that periodically the cover must be changed for a new one!
3. Car exhaust gas catalyst
The car catalyst helps the car make the exhaust of the motor exhaust gases are more environmentally friendly. It converts carbon monoxide and other harmful substances in harmless compounds. If your exhaust exhaust catalyst has become unusable, you will notice it not only when the engine icon appears (check), but also long before that when the car's power falls 2 times. For example, when you click on the gas pedal, the car, as before will not have good speakers overclocking.
Due to which the automotive catalyst may fail: If you regularly serve your car, in accordance with the regulations, the automotive company, then the catalyst should not fail. The main reason for the failure of the catalyst is the late replacement of a faulty oxygen sensor, as well as not regular replacement of spark plugs, at the end of the expiration date. When the oxygen or spark plug sensor is faulty, then the conversion of carbon monoxide in the catalyst in harmless chemical elements is terminated, which leads to overheating of the catalyst, which due to this may fail.
What needs to be done: If your catalyst has become unusable, then you cannot ride a car, since the engine will not work correctly, warning about this indication on the dashboard of the engine icon (check). Also, you will be very much increased fuel consumption, and the engine will be missing. Although the catalyst replacement is very expensive repair, it is not where not to go from repair. Although there is an alternative to replacing the catalyst on the planeencitel, but this is not 100 percentage option. Unfortunately, if you are not an experienced car mechanic, you cannot replace the defective exhaust gases catalyst yourself. In any case, you will have to contact the car repair shop. Remember that the timely replacement of oxygen sensors and spark plugs protect your catalyst from breakdown!
4. Replace air consumption sensor
Sensor mass flow The air regulates how much air must be added to the gasoline mixture for optimal fuel ignition. The sensor constantly reports the car computer data on the amount of oxygen supplied. The faulty mass flow sensor increases the fuel consumption, increases the CO2 level in the exhaust gas, and also reduces the engine power and the smoothness of the stroke. Also, with a faulty sensor, there is a bad overclocking dynamics. In the cold time, the car with a faulty sensor is badly started.
What are the reasons for the failure of the mass flow sensor: Most sensors breakage occur due to improper installation of the air filter when it is planned. Also if you do not regularly change air filteras required by the regulations maintenance The car recommended by the manufacturer, the mass flow sensor can fail.
What needs to be done: Theoretically you can ride a broken air flow sensor for a long time (several weeks or months). But you will notice that the longer you drive, the more fuel consumption consumption increases. Replacing the sensor in the car service is not as expensive, since the work itself does not take much time and is sufficient. Basic costs are related to the cost of the sensor, which on some cars can be 11,000-14,000 rubles, if it is an original sensor or up to 6000 rubles, if an analog substitute. Independent replacement The sensor is very simple. But due to the small cost of work on the replacement of the sensor, you can entrust this work and the master in the car service. Remember that you need to regularly change the air filter, observing the regulation of the car!
5. Replacing the spark plugs and high-voltage wires
Spark plugs in the car are the main items for ignition fuel mixes. With defective ignition candles, the spark is incorrect for inflammation of the gasoline mixture. In defective candles, there is often no spark or incorrect spark interval, which affects the improper operation of the engine. With the wrong work of the candles during acceleration, especially from the scene you can feel small shoes.
What are the reasons for the failure of the spark plugs: Most of the spark plugs in cars until 1996 release must be changed every 25,000-30,000 kilometers. In newer, the ignition candles are more than 150,000 km. However, these terms of planned replacement of spark plugs may decline at the expense of various factors associated with fuel quality and driving style.
What needs to be done: If your candles did not change for a long time, or you feel in the work of the engine failures associated with the ignition, then it is necessary to immediately replace them with new ones. Do not attempt to save on undime replacement Ignition candles, since the candle value is not very expensive, as well as work to replace them. By changing the old spark plugs, you will improve the engine operation and reduce the fuel consumption of the car. Independently change the spark plugs quite easily. Mostly they are in easy accessibility under the hood of the car. You need an ordinary candle wrench to unscrew the candles from the engine. It is also desirable to monitor the state of high-voltage wires, since over time they can come into disrepair and pass electricity, which is transmitted to the ignition candles, which will reduce the spark strength. Remember that the regular replacement of the candles, in accordance with the regulatory of the maintenance of your car, retains your exhaust gas testing catalyst from breakdown, and also improves the operation of the engine!
Surely every car enthusiast knows such a terrible word of malfunction as Check Engine Or in Russian just "Check". There are categories of people who have never come across it and are categorically afraid of her appearance, there are those who have already been somehow familiar and try to avoid a new meeting in every way. But unfortunately, there are those who have a similar error simply ignores and continues to operate the car, can be reduced!
Engine fault diagnostics system on Renault Logan
The engines on all cars Renault Logan are an technologically complex system with their own side computer, which is capable of identifying the presence of a malfunction from all sorts of sensors and ending with a whole chain of systems.
All you understand that all errors and causes of faults, it will not be able to lay out on any onboard computer, therefore, in order to notify the driver about any critical breakdown, the very icon of Check Engine lights up.
At one time, errors can wear not the fatal nature of the malfunction, when how skipping it out of sight, you can miss more serious breakdown. As you know, two times the same light will not be able to light up. If you do not pay attention to the error message in time, then.
It follows from this that the "Check" signaling lamp, you need to diagnose and delete as soon as possible.
We learn the reason for the air of the check and delete the error
When the lamp lights up immediately after turning on the ignition, and immediately goes out - it's not a breakdown! Do not confuse!
For such manipulations, Renault Logan cars are equipped with a trapezoidal 16-pin-and-II diagnostic connector, which is located in the glove compartment.
In order to determine the error of the system you can take advantage different ways Diagnostics:
- A visit to the specialized car service, with the ability to diagnose and output errors in special codes with decoding. Keep in mind that the price only for diagnostics may exceed 1000 rubles, regardless of what type of malfunction.
- Buying an on-board computer that is capable not only to read all the errors, explain their cause, but also to remove from memory if necessary. Similar devices on Renault Logan are installed in the place of the central duct or at any convenient place. windshield. It is worth noting that the acquisition of such BC will cost the owner within 4000-5000 rubles. (This option is not the worst, since the functionality in such devices is quite wide).
One of the options for installing an abnormal side computer on Renault Logan. Plus - Easy installation, minus - greatly attracts the attention of "Marauders"
- Purchase a special OBD2-BT scanner (in popular Chinese online stores) or in the stores of the city, to use one smartphone and a special program to be considered, determine and clear all errors of the car system. This device is compact enough and mobile, fixed in diagnostic connector And with Bluetooth connects with the phone.
Most optimal option For price / quality - diagnostic adapter ELM327. Together with a cell phone allows you to completely replace the regular on-board computer
The device is capable of anywhere and in the minimum time to establish the cause of the malfunction.
P0420 Catalyst System Efficiency Below Threshold (Bank 1) / The efficiency of the catalyst system below the threshold is one of the most frequent errors on the Renault Logan, which leads to the appearance of the "Check engine" icon. Most often occurs when refueling low-quality fuel!
The easiest way to remove the "temporary" check
The easiest and fastest way to reset the error will be the removal of the terminal with rechargeable battery. However, this attempt will only hide the consequence of the emergence of a malfunction, but will not open its causes, and after some time "Check" will light up again.
Real sellers of cars, who try to hide the obvious drawbacks of their cars, are used by such admots. More.
RESULTS
In any case, what kind of options you have chosen as a result, it is the diagnosis of a fault of the check lamp "Check" on Renault Logan, will help you to identify the true reason for its appearance. And the sooner you get rid of it, the more reliable the next kilometer of your path will continue.
The state of the technical reno repair works unique Specialist - Kotech (Cotech). it certified Electric Diagnostic Renault The highest qualification, which knows everything about the device and repair of Reno, and also has the official admission to complex diagnostics.
Such people - units, each dealership Renault is obliged to maintain a similar employee.
If the kitel cannot solve some technical question, the next step is a request to the manufacturer's research center. number electronic systems Controls in cars every year becomes more and more, their diagnosis is complicated. Experience and qualification Cotech Renault is a guarantor of detection of a malfunction with a minimum time spent on diagnostics.
| Service | Cost |
|---|---|
| Diagnostics with the connection of the diagnostic scanner RENAULT CAN CLIP and error reading | 550r |
| Uncomplicated work (replacement of the sound signal, a steering switch) | 500 - 1500r. |
| Middle work Related to troubleshooting in wiring, with partial interior analysis | 3000 - 4000r. |
| Complex work (posting replacementRenault, repair of electronic control units) | from 10000r. |
| Diagnostics of the Renault engine for gasoline engines (computer diagnostics, compression check in cylinders) | 1050r |
| Renault engine diagnostics for gasoline engines with about removal of collector (Motor Nissan) | 3150r |
Renault autoconecern supplies models on the Russian automotive market, which are as adapted to our conditions: poor roads, poor-quality fuel and lubricants and motor fuel. But and in time, the consumption of gasoline, oil begins to increase; Different knocks, screens, noises appear. Any deviations from normal work Renault car - reason to present a car for diagnosis in a specialized car service.
The most frequent appeals:
- Renault does not start!
- An error appeared on the dashboard!
- Light a check on Reno!
- Alarm does not work!
In our technical center cost computer diagnostics Renault with the connection of the Renault CAN Clip diagnostic scanner and the error reading is 550 rubles. In a short time you can produce diagnostics of most control systems: automatic transmission, engine, ABS / PBS, cruise and climate control, etc. The rate of troubleshooting identified during the diagnosis of Renault depends on the amount of necessary work.
Non-flat works - Replacing the audio signal, the steering wheel switch is 500 - 1500 rubles. Work middle difficultyrelated to the search for malfunctions in the wiring, with a partial analysis of the car's salon usually - 3000-4000 rubles. Prices sophisticated work, such as: Replacing the wiring, repair of electronic control units begin from 10,000 rubles.
In addition to computer diagnostics, the technical reno repair shop offers:
- diagnostics of the Renault engine for gasoline engines (computer diagnostics, compression check in cylinders) - 1050 rubles. With removal of collector (Motor Nissan) - 3150 rubles
- diagnostics of the air conditioner Renault (Freon download, system vacuuming, refueling - 1200 rubles, search for leakage - 800 rubles)
- diagnosis of running Renault ( is free, when carrying out any work)
