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Today, modern cars have in their arsenal many additional sensors that are placed on the instrument panel and help the motorist to monitor the health of their vehicle.
In this article, we'll look at:
- what sensors are responsible for the quality of the engine;
- what do they signal?
- How to fix it.
indicator of stable and good work engine light is faulty Engine Check engine.
If the engine is running normally, then the light comes on when it starts and immediately goes out. A burning check engine when the car is moving is already the first sign - an engine malfunction. IN this case do not panic and immediately go to the service station, since most cases associated with the sensor faulty engine you can fix it yourself.
Engine malfunction indicator: the main causes of fire. Methods of their treatment
There are quite a few reasons why the engine diagnostic lamp lights up, since the signal comes from the on-board computer, which simultaneously analyzes many vehicle operating systems: ignition, automatic transmission, engine, carburetor, etc. Some malfunctions can be diagnosed independently, but first, let's figure it out in their reasons:
- If the engine light comes on, you must start with a leak test fuel system, for example, the gas tank cap is loose or defective. This engine warning light is often turned on for this very reason.
- If the check engine light comes on while the vehicle is moving, this may indicate a low oil level in the engine. To diagnose this malfunction, it is recommended to stop and listen to the operation of the engine in order to identify the presence extraneous knocks and noise. And also conduct a visual inspection of it - check the oil level, inspect for leaks and damage to the body.
- In the conditions of our country, the quality of products fuels and lubricants wants to be the best, as a result of which the engine malfunction icon may also light up. To be treated by a banal replacement of bad fuel.
- If the check engine light is still on during stable and smooth operation of the engine, this may be a sign of a misfire in one of the candles. If you find a “penetrating” spark plug or armored wire, then they must be urgently replaced, since they are the main igniters of the fuel system. At faulty spark plug small jolts may be felt during acceleration, which is caused by incorrect spark supply. The recommended interval for replacing spark plugs is 25 - 30 thousand km. Please note that timely replacement candles not only improves engine performance, but also reduces fuel consumption. By the way, the gap between the spark plug electrode should not exceed 1.3 mm.
- Faulty ignition coil. It is necessary to check the presence of a spark and resistance at the coil terminals.
- Malfunction of the oxygen sensor (lambda probe). This sensor helps control your car's fuel consumption, so a malfunction can have a significant effect on increasing it and reducing engine power. The cause of the failure is oil soot, which covers the sensor with a thin layer, which reduces the performance of the gasoline mixture adjustment sensor. Besides, untimely replacement sensor can damage the catalytic converter. Treated by replacing the sensor.
- Catalyst failure exhaust gases. The catalyst not only provides a more environmentally friendly exhaust gas, but is also responsible for the dynamics of the car. main reasons Catalyst breakdowns are the untimely replacement of the oxygen sensor and spark plugs, since it is on them that the conversion of carbon monoxide in the catalyst into harmless chemical elements depends. Otherwise, the catalyst overheats and may burst. Treat with a replacement.
- Injectors malfunction. As a rule, they require cleaning, but sometimes even replacement.
- Sensor failure mass flow air.
This sensor is responsible for the poverty of the supplied mixture. A malfunction of this sensor may result in increased consumption fuel, a decrease in engine power and a violation of the smoothness and dynamics of the car. In addition, the car may not start well, not run smoothly at idle.
The main reason for sensor failure is untimely or incorrect installation air filter.
Please note that with a broken mass air flow sensor, you can drive for a long time, but this will negatively affect, first of all, fuel consumption. Treat with a replacement.
- Fuel pump failure or fuel filter. It is necessary to measure the pressure in the rail (its value should not be less than three atm.). To be treated by cleaning the filter and mesh in the gas tank. More drastic measures are the replacement of the fuel filter or fuel pump.
If the above methods of "treatment" did not help and the check still lit up on the instrument panel, then you must immediately contact the car mechanic, otherwise it may be fraught with serious repairs.
IN given time all types of cars are equipped with self-diagnosis systems, which, using indicator lights, tell the driver about malfunctions or abnormalities in the coolant level, engine oil, no charging battery, critical wear of brake pads and other indicators. The main light on the instrument panel is the check engine indicator, which controls the operation of the engine management system. The “Check Engine” check has such a wide range of parameters that the location of the malfunction is determined only with the help of a special code that is displayed on the light panel and remains in the device’s memory. You can quickly find out why it caught fire in your car or is on the panel of the car you are about to purchase.
The check engine light is on - causes and solutions
The luminous check of the motor does not always mean a signal of a malfunction in the control systems of the operating power unit. When the larva is turned in the ignition switch to the on position, the light bulb that comes on indicates that the connection circuit to the power source is working properly.
What does the inscription mean
Check engine can highlight the cause of the malfunction
Translated from English name The check engine indicator gives the driver a hint - "CHECK THE ENGINE". Execution control light on different types cars are made in different ways: in the form of a silhouette of the engine with various options labels or without them. When the ignition key is turned to the operating position, all self-diagnosis lamps light up. When starting the engine, they should go out. A glowing indicator when the engine is running is a signal of a malfunction of the equipment that it controls. On many vehicles, a flashing Check engine LED is accompanied by a beep to get the driver's attention.
What does this signal mean
At first, the check engine indicator was controlled by the electronic engine control unit. The task of the signal light was to control the operation of the mixture formation system of engines with injection through an injector. The functioning of air intake and purification, nozzles, fuel pump. For this, special sensors were used. But over time, the light bulb was connected to the on-board computer and it added responsibilities. Today, "Check Engine" indicators control several engine control units: ignition, composition of the combustible mixture, revolutions crankshaft, regulator idle move and other systems.
Video: what does the CHECK ENGINE indicator mean
Causes of burning a check on a carburetor engine with an injector
Why caught fire on a diesel
A motor running on a solarium, like any engine, is always subjected to variable loads. They affect the change in the number of revolutions of the crankshaft. Choice desired mode to maintain a constant pressure in the injection system assigned to the control unit.
Diesel engine diagnostics
This electronic controller changes the performance of the fuel pump depending on the load that has appeared. Due to this, the system constantly maintains high pressure, which is necessary for stable operation nozzles. On a diesel engine, the cause of the fire check bulbs engine is much more difficult to install than on a gasoline engine. So the advice is this:
- Check the oil level in the crankcase, top up if necessary.
- Drive the car to a reliable car service to diagnose all engine control systems, automatic transmission and other devices. There, the operation of the on-board computer will be checked using professional equipment.
When you can continue driving with this indicator, and when not
You need to understand that from right action the driver at the moment of detection of the flashed light bulb “Look at the Engine”, the consequences for the further operation of the car depend. The glow of the self-diagnosis element when the power unit is running tells the car owner that on-board computer or the engine control unit has detected a malfunction.
The check engine LED is on. What to do?
Permission to continue driving if the light is on (not blinking) and there is no noticeable change in vehicle performance. It also instantly responds to a sharp press on the accelerator pedal. No power loss observed. The oil level in the crankcase and the antifreeze in the cooling system are normal. The rest of the self-diagnostic lamps are off. You need to get to the nearest car service in order to use computer diagnostics establish and correct the cause of the failure in the control system.
But if negative changes in the operation of the car began to be observed: the engine power decreased, suspicious knocks, vibration appeared, the smell of burning began to be felt, and the Check engine light blinks - further movement forbidden. The engine must be turned off immediately to avoid serious consequences. Suspicion of overheating of the power unit, pressure drop in the engine lubrication system and other reasons can lead to breakdowns that require a lot of money, time and effort.
What faults does the light come on?
On board modern car installed microprocessor system control, which is responsible for the self-diagnosis of the engine and other units. This probability is provided by the on-board computer. Its read-only memory (ROM) contains a program that controls the actions of the microprocessor. At normal modes the operation of the car, the computer regularly checks the electronic and electrical systems. If there are deviations from the standard values, the controller turns on emergency mode. With it, instead of the erroneous parameter faulty block inserted appropriate value from the assigned program. In this case, the reserve number will be entered into the controller's memory as a malfunction.
The LED in the instrument cluster will illuminate to inform the driver of this situation. Check indicator engine. Microprocessor electronic block management remembers special code malfunctions. You can read this indicator visually, depending on the type of computer. These can be flashes of an LED light bulb of different duration caused by:
- the fault itself;
- by closing the specified contacts of the diagnostic connector;
- connecting an analog voltmeter to certain pins of the outputs used to connect readers.
ECU trouble codes "January 4" - reading codes
Check engine flashes are so-called slow codes that carry a small amount of information. They consist of two digits indicating a malfunction in a special table. This collection of codes is an appendix to operational documents. The first digit is indicated by long flashes (up to 1.5 seconds), the second - by short flashes (up to 0.5 seconds). There is a pause between them. It is a few seconds.
There are also quick codes", which are able to give out a great detailed volume information for diagnostic equipment.
It must be remembered that all elements of electronic control do not respond well to external influences: power surges, static electricity and other factors. Therefore, any preparatory work must be carried out with the ignition key switched off.
Table Fault codes for the controller type "January-4" VAZ 2110, VAZ 2111, VAZ 2112
| Code | Malfunction |
| 12 | Serviceability of a diagnostic circuit of a control lamp |
| 14 | High coolant temperature sensor signal |
| 15 | Low level coolant temperature sensor signal |
| 16 | overvoltage onboard network |
| 17 | Reduced voltage of the on-board network |
| 19 | Incorrect crankshaft position sensor signal |
| 21 | Throttle position sensor signal voltage too high |
| 22 | Insufficient Throttle Position Sensor Signal Voltage |
| 24 | No signal from vehicle speed sensor |
| 27 | CO potentiometer signal high |
| 28 | Low signal CO-potentiometer |
| 33 | Incorrect mass air flow sensor signal ( high frequency signal at the output of the sensor) |
| 34 | Incorrect mass air flow sensor signal (low signal frequency at the sensor output) |
| 35 | Idle speed deviation |
| 43 | Incorrect knock sensor signal |
| 51 | Controller error (RAM error) |
| 52 | Programmable read-only memory (PROM) error |
| 53 | Electrically programmable memory (EPROM) error |
| 61 | Immobilizer communication error |
On the move, while accelerating
If the engine service indicator lights up: when pulling away; lights up constantly while driving; during its acceleration - the reason is insufficient level oil in the crankcase. You need to stop the car, listen to the engine. In this case, extraneous noises, tapping, rattling should appear. Stop the engine, check the dipstick. If there is not enough oil in the system, and there is nothing to add, it is allowed to drive carefully to the house. In such cases, it is recommended that you definitely drive the car to a car service in order to find out exactly the cause of the oil level drop and eliminate it.
The check is flashing, the engine is troit and does not pull, the car is shaking, the speed is floating
Usually this situation occurs when driving, when the engine needs to increase speed sharply. When working on idling Everything is fine. Suspicion primarily falls on failures in the ignition system. In this case, do not experiment with gasoline engine for checking the spark in the coil, on candles and other manipulations. This can only be done with a multimeter. If the behavior of the car is limited only to the operation of the engine of not all cylinders, you need to carefully, carefully, slowly drive towards the nearest car service. It is better to pay a little money to professionals who are able to find and eliminate the cause than to disable the on-board computer or other delicate electronics due to their ill-considered actions. In this case, the costs will be much higher.
Check engine light came on after refueling
Bad gasoline - the cause of unstable engine operation
This problem may arise from a leak in the fuel system. One of the reasons is a poorly screwed gas tank cap or a defect in it. If necessary, the plug should be replaced. Another reason for burning a check is refueling with low gas octane rating or bad fuel. In the latter case, they change gas stations. If the fuel is so bad that the machine does not work stably, it must be drained. In all other cases, you can do this: dilute the fuel quality gasoline, and reset the check engine readings by removing the negative terminal from the battery for a few minutes.
If moisture gets inside the engine with injection, the injector after washing, heavy rain, when forcing a river, drops of water can fall on the wires high voltage, ignition coil, wiring connectors. Here the danger lies in the fact that the malfunction does not appear immediately, but after some time. The consequences can be dangerous if the car is driving on a freeway. The “Check Engine” LED will light up, and the engine may suddenly stall, lose throttle response, or even stall. It will help to remove moisture with a dry rag and dry all components power unit warm air(using a hair dryer).
The check engine LED lights up in different engine modes
Why does the engine troit
The normal operation of the power unit with an injector depends on many reasons. It's worth messing with one of installed sensors, controlling the fuel supply system, air purification, mixture formation, ignition and other control units, as the engine starts to work irregularly, uncleanly, abnormally. When there is a suspicion of a malfunction, that is, the engine reacts incorrectly to certain actions of the driver, you need to pay attention to the following circumstances:
- What is the temperature outside?
- Is the engine warm?
- Under what conditions does it appear unstable work engine - when starting off, accelerating, constant speed?
- What self-diagnosis indicators light up in this case?
- When was the last time the car was in a car service, which repair work performed?
Before diagnosing engine control systems on your own or in a car service, you should check and eliminate such malfunctions as:
- leaks of antifreeze, engine oil, fuel;
- cracking or loose vacuum hose clamps;
- oxidation of battery terminals;
- violation of contacts in the wire connectors;
- smoke, smells, unusual sounds;
- check the level of engine oil, coolant and brake fluid.
The uniformity of the engine can be checked using a strip of paper that must be brought to exhaust pipe. The sheet should deviate back from the jet of gases and remain in this position with slight fluctuations.
If there is not enough gasoline in the tank, this can lead to a check fire on the instrument panel.
The battery must be maintained in a technically sound condition. The voltage at the terminals should be between 13.5-15 volts.
The check engine light may come on if:
How to turn off the check engine LED. Reset error
On different brands machine self-diagnostic process starts different ways. For some, by turning the ignition key and pressing the gas pedal a certain number of times at certain intervals. The engine malfunction light starts flashing and you need to count the flashes, translate them into an error code and find an explanation from the table. For others, the error code is displayed on the on-board computer display if you start the self-diagnosis process through a combination of buttons.
How to turn off the check engine LED?
For others, certain contacts in the diagnostic connector are bridged for this purpose.
A great option that will help save a lot of money on a trip to a car service - buy car scanner OVD-2 or another brand. With it, you can regularly check the operation of the engine for errors in order to understand which sensor needs to be replaced, or which adjustment has been violated.
Resetting errors by removing the battery terminal
You can reset errors in the on-board computer or ECU by the most accessible way- briefly disconnect the terminal from the battery. Memory electronic devices reset and the indicator should turn off. But this should be done only after the error has been decrypted, detected and corrected. There are other ways to reset errors: using a scanner, installing special programs on a smartphone, closing the contacts in the diagnostic connector.
Video: Daewoo Matiz. Reset Check Engine with ELM327 and Torque
If it's on fire
Check engine lights up
There can be many reasons for an indicator glowing at half its strength. This is a bad weight on the car, the installation of incandescent bulbs of the wrong power and type, problems with electrical wiring and other reasons. You can give advice like this: run the self-diagnosis process and see the error code. Independently check the reliability of the contact on the negative terminal of the battery and all connections to the ground terminals. Pay attention to the performance of all the bulbs: in the headlights, turns, dimensions, brakes.
The car's self-diagnosis indicator Check engine plays very important role in detecting faults in engine control systems and other machine components. Its main task is to draw the driver's attention to malfunctions in the engine, automatic box gear changes. Moreover, this can happen before this malfunction begins to affect changes in the behavior of the power unit and automatic transmission. The engine will start to triple, lose power, fuel consumption may increase. The main purpose of this control light is the timely detection of faults in order to eliminate them in time.
2970 05.01.2018Drivers are notified of the presence of a malfunction various systems vehicle using the icons on the instrument panel. It is not always possible to decipher the meaning of such burning icons intuitively, since not all motorists are well versed in cars. In addition, on different cars, graphic designation the same icon may differ. It is worth noting that not every light on the panel only indicates a critical malfunction. The indication of the light bulbs under the icons is divided by color into 3 groups:
- Red icons indicate danger, and if any symbol lights up in this color, you should pay attention to the on-board computer signal in order to take quick troubleshooting steps. Sometimes they are not so critical, and it is possible to continue driving the car when such an icon on the panel is on, and sometimes it is not worth it.
- Yellow indicators warn of a malfunction or the need to take some action to drive the car or service it.
- The green indicator lamps inform about the service functions of the car and their activity.
Let's present a list of the most frequently asked questions and a decoding of the icons and indicators on the instrument panel.
Many badges with emblem-silhouette of the car are applied. Depending on the additional elements this indicator can have different meanings.
When this indicator is lit ( car with key), then it informs about malfunctions in the operation of the engine (often a malfunction in the operation of any sensor) or the electronic part of the transmission. To find out the exact cause, you will need to perform diagnostics.
caught fire red car with lock, which means that there were problems in the work of the regular anti-theft system and it will be impossible to start the car, but if this icon blinks when the car is closed, then everything is normal - the car is locked.
Yellow exclamation mark machine indicator notifies the driver of the vehicle hybrid engine about a malfunction of the drive. Resetting the error by dropping the battery terminal will not solve the problem - diagnostics are needed.
Icon open door everyone is used to seeing it burning when a door or trunk lid is open, but if all the doors are closed and the light with one or four doors continues to shine, then often the problem should be looked for in the door switches (wire contacts).
Slippery road icon starts flashing when the stabilization system detects exchange rate stability site slippery road and is activated to prevent spinning by reducing engine power and braking the spinning wheel. There is no need to worry in such a situation. But when a key, a triangle or a crossed-out skid icon appeared near such an indicator, then the stabilization system is faulty.
wrench icon pops up on the scoreboard when it's time to produce Maintenance car. It is an informational indicator and is reset after maintenance.
Warning icons on the panel
Steering wheel icon can light up in two colors. If lit yellow steering wheel, then adaptation is required, and when a red image of the steering wheel with an exclamation mark appears, it is already worth worrying about the failure of the power steering or EUR system. When the red steering wheel is lit, then surely yours steering wheel becomes very difficult to turn.
immobilizer icon, as a rule, blinks if the car is closed; in this case, the indicator of a red car with a white key signals the operation of the anti-theft system. But there are 3 main reasons if the immo light is constantly on: the immobilizer is not activated, if the label from the key is not read or the anti-theft system is faulty.
handbrake icon lights up not only when the handbrake lever is activated (raised), but also in cases where the brake pads Or you need to top up / replace the brake fluid. On a car with an electronic handbrake, a light bulb parking brake may light up due to a glitch of the limit switch or sensor.
coolant icon has several options and, depending on which one is on, draw conclusions about the problem accordingly. One red lamp with the image of a thermometer scale indicates elevated temperature in the engine cooling system, but the yellow expansion tank with waves indicates a low coolant level in the system. But it is worth considering that the coolant lamp does not always burn at a low level, perhaps just a “glitch” of the sensor or float in the expansion tank.
washer icon indicates low fluid levels. expansion tank glass washer. Such an indicator lights up not only with a real decrease in the level, but also if the level sensor is clogged (sensor contacts are covered with plaque due to low-quality liquid), giving a false signal. On some vehicles, the level sensor is triggered when the washer fluid specification does not match.
ASR badge- This is an indicator of the anti-spin system (Anti-Spin Regulation). The electronic unit of this system is paired with ABS sensors. When such a light is constantly on, it means that the ASR is not working. On different cars, such an icon may look different, but often in the form of an exclamation mark in a triangle with an arrow around or the inscription itself, or in the form of a car on a slippery road.
Catalyst Icon often lights up when the catalytic element is overheated and is often accompanied by sharp drop engine power. Such overheating can occur not only due to poor bandwidth cells, but also if there are problems in the ignition system. When the catalyst fails, then to the burning light bulb will be added high flow fuel.
Icon traffic fumes according to the information from the manual, it indicates a malfunction in the exhaust gas cleaning system, but, as a rule, such a light starts to burn after bad refueling or the presence of an error on the lambda probe sensor. The system registers misfires in the mixture, which increases the content harmful substances in exhaust gases and, as a result, on dashboard the exhaust light is on. The problem is not critical, but diagnostics should be done to find out the cause.
Malfunction indicators
battery icon lights up if the voltage in the on-board network drops, often such a problem is associated with a lack of battery charge from the generator, so it can also be called the “generator icon”. On vehicles with a hybrid engine, this indicator is supplemented by the inscription "MAIN" at the bottom.
oil icon, also known as a red oiler - indicates a drop in the oil level in the car engine. Such an icon lights up when the engine is started, and does not go out after a few seconds or may light up while driving. This fact indicates problems in the lubrication system or a drop in oil level or pressure. The oil icon on the panel can be with a droplet or with waves at the bottom, on some cars the indicator is supplemented with the inscription min, senso, oil level (inscriptions yellow color) or simply the letters L and H (characterizing low and high level oils).
pillow icon can light up in several ways: both the red inscription SRS and AIRBAG, and the “red man fastened seat belt”, and in front of him is a circle. When one of these airbag icons is lit on the panel, then - this is the on-board computer notifying you of a malfunction in the system passive safety and in the event of an accident air cushions won't work. The reasons why the pillow sign lights up, and how to fix the problem, read the article on the site.
Icon Exclamation point may look different and its meanings, respectively, will also be different. So, for example, when the red (!) in the circle is on, this indicates a malfunction brake system and it is advisable not to continue the movement until the cause of its occurrence is clarified. They can be very different: raised hand brake brake pads are worn or the brake fluid level is low. A low level is just dangerous, because the reason can be not only in heavily worn pads, as a result of which, when you press the pedal, the liquid diverges through the system, and the float gives a signal of a low level, it can be damaged somewhere brake hose, and this is much more serious. Although, very often the exclamation mark lights up if the float (level sensor) is out of order or shorted out, and then it just lies. On some cars, the exclamation mark is accompanied by the inscription "BRAKE", but this does not change the essence of the problem.
More exclamation mark can burn in the form of a sign "attention", moreover, both on a red background and on a yellow one. When caught fire yellow sign“Attention” - it reports a malfunction in the electronic stabilization system, and if it is on a red background, it simply warns the driver about something, and, as a rule, explanatory text is lit on the dashboard display or combined with other informative designation.
ABS icon may have several display options on the dashboard, but regardless of this, it means the same thing on all cars - the appearance of a problem in ABS system, and what's in this moment anti-lock wheel system does not work. You can find out the reasons why the ABS does not work in our article. In this case, the movement can be made, but it is not necessary to count on the operation of the ABS, the brakes will work as usual.
ESP badge It can either light up intermittently or burn constantly. A light bulb with such an inscription indicates problems with the stabilization system. The Electronic Stability Program indicator, as a rule, lights up for one of two reasons - either the steering angle sensor is out of order, or the brake light switch on sensor (aka “frog”) ordered to live for a long time. Although, there is a more serious problem, for example, the brake system pressure sensor has covered itself.
Engine icon, some drivers may call it an "injector icon" or check, it may light up yellow when the engine is running. It informs about the presence of engine errors and its malfunction. electronic systems. To determine the cause of its appearance on the dashboard display, self-diagnosis or computer diagnostics are performed.
glow plug icon may light up on the dashboard diesel car, the meaning of such an indicator is exactly the same as the check icon on petrol cars. When there are no errors in the memory of the electronic unit, the spiral icon should go out after the engine warms up and the glow plugs are turned off.
This material is informative for most car owners. And although absolutely all possible icons of all existing machines, You will be able to independently understand the basic designations of the dashboard of a car, and do not sound the alarm when you see that the icon on the panel is lit again.
Listed below are almost all possible indicators on the instrument panel and from the meaning
1. Fog lights(front).
2. Faulty power steering.
3. Fog lights (rear).
4. Low washer fluid level.
5. Wear of brake pads.
6. Cruise control icon.
7. Turn signals on.
8. Rain and light sensor.
9. Winter mode.
10. Information message indicator.
11. Indication of glow plug operation.
13. Proximity key detection indication.
14. Key not found.
15. Key battery needs to be replaced.
16. Dangerous shortening of the distance.
17. Depress the clutch pedal.
18. Depress the brake pedal.
19. Steering column lock.
20. High beam.
21. Low tire pressure.
22. The indicator of inclusion of external illumination.
23. Malfunction of outdoor lighting.
24. The brake light does not work.
25. Diesel particulate filter warning.
26. Trailer hitch warning.
27. Air suspension warning.
28. Lane change.
29. Overheating of the catalyst.
30. Not wearing a seat belt.
31. Parking brake activated.
32. Battery failure.
33. Parking assistance system.
34. Maintenance required.
35. Adaptive headlights.
36. Faulty automatic tilt headlights.
37. Malfunction of the rear spoiler.
38. Malfunction of the roof in a convertible.
39. Airbag error.
40. Malfunction of the hand brake.
41. Water in the fuel filter.
42. Airbag deactivated.
43. Malfunction.
44. Low beam headlights.
45. Dirty air filter.
46. Fuel economy mode.
47. Downhill assist system.
48. High temperature.
49. Malfunction anti-lock braking system brakes.
50. Malfunction of the fuel filter.
51. The door is open.
52. The hood is open.
53. Low fuel level.
54. Malfunction of an automatic transmission.
55. Automatic speed limiter.
56. Suspension shock absorbers.
57. Low oil pressure.
58. Heated windshield.
59. The trunk is open.
60. The stabilization system is disabled.
61. Rain sensor.
62. Engine failure.
63. Heated rear window.
64. Automatic cleaning of the windshield.
Modern machines are hard to imagine without the presence of various sensors that signal the appearance of malfunctions in individual mechanisms and devices. When a few decades ago, the car owner had to independently detect malfunctions using external examination and listen to the operation of the motor, today all this is done by electronics.
With the help of a quick notification of various sensors, a car enthusiast can quickly give his car for repair when any malfunction is detected. This helps to avoid additional costs. Let's now get acquainted with the engine malfunction indicator, and also consider in which cases it is displayed, how to eliminate malfunctions that appear in the operation of the motor.
Check Engine.
Any motorist knows that such a lamp glows yellow and is called a “check engine”. In the normal state, such a lamp is highlighted when the engine is started and goes out after a few seconds of time. Routine testing of the electronics is performed. But when the engine malfunction icon lights up already while the car is moving, then this is a sure sign that something is wrong with the car's engine. In such a situation, you should immediately drive to a service station. Of course, you do not need to immediately stop the car and call a tow truck, but you should not delay the repair either.
Mentioning what such a signal could mean, it is necessary to clarify a few important points. If back in the 90s this sensor reported only about malfunctions in the carburetor (its pollution, detection of a non-working mixture), today its functions have expanded significantly. On modern machines, where the carburetor is replaced by an injector, “check engine” reports not only about the ingress of a non-working mixture into the engine cylinders, but also about its incorrect speed, as well as problems with ignition and gear shifting automatic transmission. From this it follows that any element of the motor is controlled by such a sensor.
The indicator of engine malfunctions is also lit due to the “perfect” quality of fuel in our country. This is due to the fact that carbon deposits appear on the spark plugs due to diluted fuel. Because of this circumstance, one of the candles may not give a spark, as a result of which the motor begins to “troit”. These episodes often happen with our new cars, and with old cars. foreign production. And the reason itself, as it turns out, lies on the surface.
Of course, that's not all. possible reasons. What to do when things get much worse? Malfunctions can also be due to wear of any ICE assembly. For example, dirty engine nozzles, timing belt loosening, catalyst malfunctions. All of the above also causes the engine malfunction lamp to light up. With these breakdowns, the costs can be quite significant.
Usually, when a driver arrives at a service station with such a problem, the auto repairman connects to the car's electronics and reads the available software errors. With the help of them, you can accurately determine the cause of the problem. The cost of computer diagnostics is about 1000-1500 rubles. It also happens that the engine is fully operational, and a normal failure has occurred in the electronics. In such a situation, the specialist resets the data, and the car, of course, does not need any repairs. Either way, when the check engine light comes on in your car, take the appropriate action. Get the help of a specialist so that delayed repairs do not cost you too much.
Car breakdown is annoying. A breakdown will become unexpected if the car is not monitored and the warnings are not heeded. One of them is the "Check engine" light. How to understand what the problem is, what it indicates and what to do if it catches fire.
Button assignment
The dashboard in a car is a way for the driver to control the level of gasoline, oil, engine operation or other components of the car that guarantee comfortable and quiet driving on the road.
Modern cars are equipped with an indicator necessary for the convenience and comfort of the driver. If earlier an engine malfunction had to be found only visually or by carefully listening to work, today a special light bulb is working. It was created for the convenience of monitoring the condition of the engine. Ideally, it should light up only when the engine is started and go out after a couple of seconds.
If the light does not go out or lights up while driving, then you should think about malfunctions in the operation of the main component of the car.
How serious can the reasons be?
Each signal on the car panel is an indicator that the driver must be attentive. When the check engine light comes on, there are several reasons.
- A common cause is gasoline. Due to the additives that unscrupulous manufacturers use in gasoline, the engine does not work properly, it becomes clogged. You should change the fuel or refuel at another gas station, and everything works correctly.
- Faulty candles.
- Broken ignition coil.
- A triggered oxygen sensor (lambda probe).
- Broken exhaust catalyst.
- Incorrect operation of high voltage conductors.
- Injector failure.
- Fuel pump or fuel filter.
It is worth starting the check with the neck cap fuel tank. If it is not tightened to the end or defects appear on it, then the light indicates wrong work engine.
Each of the reasons is not very terrible, but requires immediate elimination. If you do not pay attention in time and do not diagnose the malfunction, you can lead to a complete breakdown of the engine and the incapacity of the machine.
The engine is serious, but it is not necessary that the work requires overhaul or engine replacement. The work of the masters is important in any issue of diagnosing and repairing the engine. But, if the reason is candles, then the replacement is carried out independently and quickly, without the involvement of craftsmen.
What to do if the light is on
If you see that the check engine light does not light up as it should (does not go out after starting the engine or lights up while driving), then you should stop to diagnose the car. You can do this not immediately, but it is necessary. Remember, if it lights up, this is the reason to either go to the service station for diagnostics, or check the engine for faults.
The first thing you can do when the light comes on is to stop and listen to how the engine works: is it troit, is it extraneous noise or knock. If you hear extraneous sounds, then they indicate the cause of the breakdown to an experienced driver. If the cause of the breakdown is not clear to you, the direct road is to the nearest service station.
If the light bulb is lit poor quality fuel(this can be determined after diagnosis, after excluding other causes), then the service masters will tell you that it is worth changing the type of fuel poured into the car or the place where you are used to refueling.
Also carry out visual inspection engine for cracks, bumps, leaks. If you yourself find a breakdown, then according to the reason, repairs are also carried out.
- oxygen sensor. It is worth replacing it yourself, following the operating instructions for a car of a particular brand. If the replacement is not made in time, then there will be an excessive consumption of fuel and the catalyst may break, the replacement of which will be much more expensive.
- A leaky fuel tank is the cause of air getting inside, which means overspending. It is worth either replacing the cover or achieving tightness with gaskets.
- Candles. This is the main element that guarantees tanning. fuel mixture. If they do not work correctly, then the car will refuse to work at all. Replacing candles is not difficult if you are already experienced driver. You can change either only the candle that has already worked out its own, or all at once, in order to surely avoid malfunctions in the car. In the store it is worth buying a set of candles specifically for your car. If you are not sure what to buy correct option and you can change it, then go to the service station, where the necessary parts are already there and the specialists will be able to replace it quickly and affordably. In the issue of candles, it is worth remembering that old-style cars need to be replaced every 20,000 km, and if the car is new, then on the same candles it can travel up to 150,000 km. If you change the candles on time according to the requirements technical operation your car, then you can avoid catalytic converter failure and improve engine performance.
- Replacing the mass air flow sensor. This part regulates the amount of air that is needed for rapid ignition. When it is faulty, then this is excessive fuel consumption, an increased amount of carbon dioxide in the exhaust, poor acceleration, and a decrease in engine power. Most often, the breakdown is associated with an incorrectly installed air filter or the filter has already expired. When it comes to changing the sensor, the costs are related to the price of the sensor itself, but the replacement service in the service is not so expensive, because it does not require a lot of time and is simple in technology. Regular replacement filters - warranty durable work sensor.
Nuances in the operation of the "Check engine" light bulb
The check engine light on the instrument panel appeared in the early 90s. but then the work of the sensor was aimed only at controlling the operation of the carburetor. That is, the lamp lights up when:
- There was a blockage;
- Was cooked incorrectly combustible mixture for engine operation, etc.
Today, the work of the light bulb is much wider. There are no longer carburetors in new-style cars. Replaced with injectors. It is in connection with this novelty in the car that the light bulb shows not only the wrong mixture. Thanks to her, the driver learns about:
- Interruptions in work;
- Ignition problems;
- Bad shifting and more.
See what else a burning check engine light may indicate (video)
Outcome
Thus, thanks to such a light on the panel, you can control almost every element of the engine, its condition and performance.
The check engine light on the driver's panel is a status indicator. If it does not burn according to the rules, then you should pay attention to this and go for diagnostics. Timely elimination of breakdowns is a guarantee of safety and comfort on the road. Attentiveness to your car will exclude breakage at the most inopportune moment.
