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 system error, you can use different ways to diagnose:

• 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. Such devices on Renault Logan are installed on the place of the central duct or on any comfortable place of 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 and mobile, is fixed in the diagnostic connector and using Bluetooth connects to the phone.

  The most optimal option for the price / quality is the ELM327 diagnostic adapter. 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 the 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 are units, each Renault dealer is required to maintain a similar employee in the state.

If the kitel cannot solve some technical question, the next step is a request to the manufacturer's research center. The number of electronic control systems 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.

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 the normal operation of the car Renault is the 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, the cost of 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 on 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 rub
• 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)

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 the engine check lights up on the dashboard.

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)

The oxygen sensor in your car is part of the exhaust exhaust system, which controls how much oxygen has not burned in the engine combustion chamber. This sensor helps to control the fuel consumption of the car. The oxygen sensor malfunction (lambda probe) means that the automotive computer receives not the correct 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 automotive error scanner, then you, by connecting it to the car, can easily find out what sensor must be replaced.

For whatever reason, the oxygen sensor in the car comes into disrepair: Over time, the sensor is covered with a layer of spent and engine oil (oil soot), which reduces the accuracy of the sensor indicators for adjusting the gasoline mixture and the optimal distribution. The fault of the oxygen sensor in the car leads not only to, but also to the increased content of the harmful substances of 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. Many auto operating manuals have detailed instructions, as you can 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 it is impossible to pull with the replacement of this important item!

2. Check the fuel tank neck

Many drivers in most cases, when the "engine check" appears, will think about serious problems in the car engine, but they will not even think to check the tightness of the fuel system, which can be broken due to a defect or not sufficiently tightened with a 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 press the gas pedal, the car, as before will not have good overclocking dynamics.

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

The air consumption sensor adjusts how the amount of 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 the air filter, as required by the car maintenance regulation 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 sensor replacement 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 details to ignite the fuel mixture. 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 try to save on a late replacement of spark plugs, since the cost of candles 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!

For each car, including the Renault Duster, it is extremely important that all nodal units work in a clear and well-coordinated mode. This rule, first of all, refers to the functionality of the engine.

Control the operation of various nodes and car elements The driver can visually on various testimony of control devices located on the instrument panel. If a few decades ago, the owner of the car had to look after and listening to determine how the engine works, today the correctness of the main unit operation can be easily monitored by a special indicator.

Almost every modern car is equipped with such a check signal as Check Engine. If it is literally translated, then this term means "Check engine". In the perfect version, the "Check" light should light up at the start of the engine and go out after a few seconds.

In the case where the indicator does not go out or, on the contrary, it turns on during the movement of the car, you should think about the diagnosis and then in a specialized car service. Activation of the check indicator sometimes scares beginner motorists. You should not be afraid of this "assistant", because it is he who will directly indicate a possible malfunction, which means to protect the movement.

Why does the indicator light up?

Burning Light Check Engine may indicate various car malfunctions. But, as practice shows, the most common of them are:
Bad fuel;
insufficient oil level;
Ignition Candles Malfunction;
incorrect operation of the ignition coil;
faulty lambda probe;
failed catalyst exhaust gases;
bad nozzles;
Balanced gas station and / or clogged fuel filter;
not a hermetic fuel tank cover;
malfunction of high-voltage wires;
FEDERATED DMRV

Methods of correction

The very word of lighting of the "Check" indicator during the movement of the car should alert the driver, because it is an unambiguous signal in order to make up the diagnostics in the autotech center to identify and eliminate possible faults. But if the auto owner has sufficient experience, skill and skills, then a number of faults can be eliminated independently.

Low fuel levels, as well as poor quality gasoline is the most common cause of the indicator ignition. In this case, it is recommended to completely drain the poor-quality fuel from the gas tank and again completely fill the car with high-quality gasoline.

With low oil - everything is simple. Using the probe, the level is checked and the required quantity fills.

The main element that guarantees the sunbathing of the fuel mixture is the spark plugs. In case of malfunction, at least one candle, the correctness of the car is not guaranteed. It is necessary to thoroughly inspect all the candles, if necessary, remove the tart from them or simply replace. You can only change the ones that are faulty, but the professional vehicle is recommended to change the entire set immediately to avoid possible trouble in the ignition system. The timely replacement of one or several candles will be the key to the correct operation of the catalyst of the exhaust system and the engine of the car.

If there are suspicions that the reason lies in the ignition coil, it is necessary to check for the presence of spark and resistance at the output.

In the event of a malfunction of the oxygen sensor (lambda probe) there is only one output - replacement of spare parts. It is part of the exhaust system and is partly responsible for controlling the fuel consumption. The fact is that after a certain period of time, the sensor can be coated with a layer of oil soot (spent engine oil), and therefore its testimony no longer possess initial accuracy.

The purpose of the catalyst is to transform exhaust to a cleaner gas mixture. Not only the check indicator indicates its fault, but also the engine capacity has almost two times. In order to change the catalyst, you will have to initially remove the muffler. As a rule, such a breakdown is characteristic only for cars with impressive mileage.

The popular reason for faulty nozzles is low-quality fuel. Injectors are only replaced.

The gasoline pump and fuel filters are very often caused by the vehicle of the car's power units. As a rule, these elements, and especially fuel filters for diesel engines Renault require a complete replacement.

The disturbed tightness of the fuel tank cover is also often the cause of the ignition of the bulb "Check". If the lid is not tightened enough or on its surface there are chips, cracks, or other defects, the air transmission will necessarily begin, which will invariably lead to increased fuel consumption.

The air consumption sensor is responsible for adjusting the amount of incoming air required for ignition. Faults of this element can lead to incorrect gasoline consumption, to an increase in carbon dioxide in the exhaust system, reduce the power of the motor and the violation of the smoothness of the vehicle. Requires replacement. For a long time to maintain the sensor in good condition, you should not forget about the periodic replacement of the air filter.

If high-voltage wires have bad insulation, then it will also be reflected in the work of the car as a whole. In this case, the ECU recognizes a malfunction and an alerting of the check indicator checks. As a rule, it is necessary to completely replace the wires to eliminate.

Gadgets for diagnostic

In order to independently identify the cause of the engine troubleshooting, you can also additionally use one of the two proposed options.

Purchase on-board computer capable of not only to consider all working errors, but also to decipher them, as well as if necessary, periodically delete them from their memory. Such gadgets are usually installed on any, convenient location for the driver near the windshield, but most of the car owners choose the point of the central duct.

Buy a special scanner to read using a computer program and an ordinary smartphone, to determine and decipher possible errors in the work of important velocities of the car. The scanner has a compact size, is quite mobile. Its fixation is possible by means of a standard diagnostic connector, and the connection to the phone is performed via Bluetooth.

Thus, the Check Engine light is the control indicator, with which you can track the correctness of the operation of almost each engine element. Therefore, it should be treated extremely carefully.

Very often, the car owners ignore this signal, naively believing that the cause of the ignition lies only in the use of poor-quality fuel, and therefore simply temporarily turn off the battery to the indicator goes. But this is not the way out of the situation. Such disregard may subsequently lead to serious engine breakdowns and to its forced overhaul, which is very expensive.

Therefore, it is more expedient with the indicator signal to call in the nearest car service for diagnosing, identifying and timely eliminate possible problems. Only in this case, and then you can exploit your car with a sense of complete confidence and security in its work.

Attentiveness and timely repair is a pledge of a comfortable movement that increases with each kilometer traveled.