VAZ-2114 is a very common car in Russia. This car is loved for its maintainability and low maintenance. The car will not require a lot of money if it breaks down. But, unfortunately, sooner or later the VAZ-2114 engine “check” will light up on the instrument panel. Don’t be upset or panic – most of the reasons can be eliminated with your own hands. In today’s article we will look at why the “check” light on the VAZ-2114 is on, as well as how to solve this problem. This information will be very useful.
Electronic control unit
The Lada-2114 device has an electronic control unit. This mechanism directly affects how the VAZ-2114 engine operates. The “check” may light up periodically. This is due to a software problem. Also, the light comes on due to the accumulation of various errors during operation.
So, the “check” light on the VAZ-2114 is on, and the engine is working properly. How can this problem be solved? The simplest solution is to reset errors by connecting the scanner to the diagnostic connector. But if this action did not help, and the “check” is still on on the VAZ-2114, you need to change the software to a newer one. From the factory, the ECU is equipped with the “January” firmware. Now there are many versions of it, including custom ones. To use the new firmware, you need a K-line cable and a tablet or laptop. But you need to be able to download the software correctly.
The “CHECK ENGINE” light comes on. VAZ 2114
- Maybe Mickey Mouse chewed the wiring a little or the chips oxidized. take off the chips and spray with VD. and leave a piece of bread in the glove compartment for Mickey Mouse)))))))) just don’t close the glove compartment))))))))
- “resetting errors” is not a cure! First of all, check the “logical masses” on the engine, and they are located in the place on the engine where the distributor was located on the carburetor. The control unit is a fairly reliable thing, even when filled with antifreeze, which constantly happens on Kalina, after washing and drying it works as if nothing had happened, but it doesn’t like “snotty” food. Think about it, can everything fail at once? Contact a qualified electrician. Of course, the block may malfunction, but this is extremely rare
- Maybe not on topic... but the Check light came on, I became wary, and when ignited it lights up, goes out and after a couple of minutes it lights up, both at idle and when driving... But what killed me the most was that after 2 hours the brake hose on the left front burst! this is not interconnected in any way, but I was lucky that I was walking no more than 80, listening to the engine, at the crossing I started trampling the floor)) The day before it was a birthday, it was raining, we drank well, I don’t remember how we got there and where we stopped?! at once, suspiciously.... betrayal does not recede))
Before this, my speedometer dropped to 0 at speed, and then rose... maybe the speed sensor was flooded, it’s at the bottom of the box, because of this sensor, the check might be on??
Z.Y. There is no BC and no finances to purchase it, although I plan to soon
- Today I changed the heater on my VAZ 2115 and picked up the pump from the service center. The check light came on and the speakers began to make a terrible noise when I turned off the ignition key. I remove the radio panel and there is no noise and there is some kind of crap with the signaling system. I have a Jaguar autostart, tell me what could be the reason, maybe the wiring is messed up.
Spark plugs, BB wires, coil
If a VAZ-2114 car stalls, the “check” is on, or the engine “troubles” at idle, you need to pay attention to the ignition system. The main elements are spark plugs and high-voltage wires. Often on domestic cars there is a breakdown of spark plugs or wires. It is necessary to check these elements for serviceability and replace if necessary. The best way to check is to install a pre-made set of spark plugs or wires.
This way we can narrow down our search. If even one spark plug is faulty, it is better to replace the entire set. Otherwise, there is a high probability that the breakdown will happen again, only on a different cylinder. It is also recommended to check the spark plug gap between the central and side electrodes. Over time, this gap increases. The normal value should not exceed 1.3 millimeters. If the gap is larger, it can be corrected by bending the side electrode closer to the central one. If the distance between the electrodes is too large, a spark is difficult to form. Part of the fuel mixture will simply go into the air. Typically, the service life of spark plugs is 20 thousand kilometers. Some people install iridium ones because they last longer. But as motorists say, there is no point in overpaying. The characteristics of the internal combustion engine will remain the same, and the cost of such spark plugs is equivalent to three or four sets of regular ones, which are no worse.
Less often on a VAZ, the ignition coil itself fails. At the same time, the “check engine” lamp lights up on the instrument panel. The engine may stall, start poorly, or stall. The coil cannot be repaired and must be replaced completely with a new one. As for the wires, you can check them by measuring the resistance.
Reasons for the appearance and blinking of the check on the VAZ-2112
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If we consider engines with a volume of 1.5 liters, we can talk about one of two internal combustion engines: VAZ-2111 (8v) or 21120 (16v). In the first case, the ignition module 2111-3705010 is used, in the second - 2112-3705010. These modules are not capricious and do not often require repairs. We have already written about diagnosing the ignition module and repairing it.
Ignition system of the “tenth” family
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About the expert:
Francois “experienced owner” A car enthusiast with extensive experience. First there was the VAZ-2107, then the Russian front-wheel drive, then foreign cars, there were even right-hand drive ones. I try, like a “doctor,” to look and listen to the car completely. I give each of my vehicles a name.
The modules themselves, as you can see, are different, but they have the same “disease”. It is not the module that is to blame here, but its high-voltage connectors. The terminal may move away from any of the four connectors, but nothing will change externally. And after a while the terminal on the cable will burn out. Then the engine will begin to “trouble” and misfires will be noticed by the controller. Therefore, constant checking of the ignition module is necessary.
Let's clarify: at first the terminal comes off, but the current is carried out. Then charring occurs. On the dashboard of any car, including the VAZ-2112, the check will not light up immediately. And as soon as it lights up, check the contacts!
Two cases from practice
This is what happens in reality. The owners write:
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- For some reason, the check light starts flashing when the speed exceeds 100 km/h;
- The lamp blinked only after warming up to 100 degrees;
- Etc.
There are many cases, but the reason is one. Contact can be disrupted by vibration, although in the first case they talk about speed. Well, thermal expansion also cannot be discounted.
What exactly needs to be done
Check the cap on each of the wires: if the copper is burnt, clean it with ASIDOL, ammonia and ordinary chalk. The taps on the module should also be cleaned. For better protection, you can apply lithium grease (Litol-24).
Litol will help us
Here's what you can't do:
- Check for the presence of a spark by bringing a “grounded conductor” to the tap;
- Connect the “+” terminal removed from the battery to ground with the engine running;
- Apply voltage “+12” to any of the module contacts.
How to perform an express check: the key is at “0”, then we measure the resistance between taps 2-3, 1-4. Both values must match. By the way, the multimeter must be a dial gauge.
Precautions: When connecting the multimeter to the module, do not touch two probes with your hands at the same time. Measurement limit – 100 kOhm or 10 kOhm
How to distinguish “gaps” from everything else
Let's consider the situation: it is difficult to start when hot. If it starts when cold, the check light then turns on, but after 20-30 minutes it goes out. In this case, we can conclude that there is a misfire. Well, they can even be caused by an insulation breakdown. And above we looked at what is typical for the 2112 family (but not for the 21124 engine).
This block is too smart
They may say that the check for the VAZ-2112 caught fire for no reason. This happens in cases where:
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- The indicator turns on, then the engine is turned off and the battery is disconnected (disconnect the minus terminal for 10 minutes);
- After connecting the battery, no defects are observed. Start the engine - the check lamp does not light up.
In fact, the ECU actually remembers any defect (the occurrence of any error). But the “reset” is also performed by the system itself:
- When starting the engine;
- After the next test cycle.
For each error, one of two methods is used. And, in theory, there is no point in disconnecting the battery. If the “check” is constantly on, then you need to look for a defect. And “terminal tricks” usually don’t help.
Let's consider a VAZ-2110 car with an injector and a check engine light located on the dashboard, indicating problems with the engine. This light comes on if one of the sensors that monitors engine operation indicates a problem. There are several reasons why the “check,” as car owners call it for short, came on, and for an inexperienced car enthusiast it is difficult to determine the problem. In this article, we will look at the common causes of an illuminated check engine light, the consequences and possible solutions.
Pump
We are not talking about water, but about fuel. If it malfunctions, the car may behave strangely, and a “check” will also light up on the panel. Usually the cause is low blood pressure. The filter may be clogged. Both need to be examined. This is a coarse and fine filter. The first is a mesh near the pump, and the second is located separately from it and has its own housing.
It also happens that the pump itself burns out. This is especially true on cars with HBO. Some owners do not turn off the gas pump when switching to gas and, in addition, drive with an almost “dry” gas tank.
Cylinder failure
If the engine operates stable or unstable, it is recommended to check the cylinder. Its malfunction is associated with breakdown of the spark plugs, oxygen sensor and ECU. The cylinder can fail instantly or gradually. In the first case, the VAZ engine suffers, fuel consumption increases, engine power decreases, and vibration increases.
Error code: Logan engine system malfunction - New Logan
If the vehicle is not repaired in a timely manner, the engine may fail. This is explained by the fact that gasoline is constantly supplied to the broken cylinder, which is mixed with oil and goes into the crankcase. With a long process, the latter substance liquefies, losing its properties. The parts of the power unit begin to work in emergency mode, wearing out and forming chips.
If the check is flashing and the VAZ engine is shaking, then you must follow the following recommendations:
- start the power unit;
- open the hood lid;
- remove the wires from the spark plugs one by one.
The next step is to inspect the spark plugs for condition and performance. To do this, you will need to unscrew the spark plugs with a special key. If there is smoke on the head, and the electrode is clean and intact, then the motor tripping is due to dust getting into the cylinder. In this case, it is recommended to check the air supply system through the filter.
If the burn is on the entire head, and the electrode is completely burnt out, then detonation combustion has occurred and the ignition system has been emptied. If the head is covered with smoke, but the electrode is intact, then the mixture enters the ignition system late. By assessing the condition of the spark plugs, it is possible to determine the exact cause of the failure of the cylinder. To check the performance of spark plugs, it is recommended to use the “spark” method. If it breaks through, then the check continues. If there is no spark, then the spark plugs are replaced with new analogues. A good spark requires starting the VAZ and tracking the dynamics of changes.
Oxygen sensor
This is one of the most common reasons why the “check” light is on on the VAZ-2114. All Ladas of this model leave the factory with a catalyst. As a result, an oxygen sensor is needed for its proper operation. The ECU uses it to determine which ignition timing to set next, as well as the composition of the mixture.
If the sensor stops providing information or sends incorrect data, the ECU will take average values as a basis, and a “check” will light up on the instrument panel. What is the solution to this problem? Many people simply place a fake one. The best option is to install a mechanical blende. It screws into the standard hole and simulates the operation of a lambda probe. The ECU constantly receives the same, normal lambda value. Such a sensor will no longer be able to break, since it has a special coating.
conclusions
It is quite simple to determine the reasons for the appearance of the “Check Engine” icon on the dashboard of the VAZ-2114, because the main problems are: the computer, the fuel system and bad gasoline.
Dashboard without receipt
If the motorist is unable to identify and fix the problem on his own, it is recommended to contact a car service center. Of course, you will need to spend a certain amount of money, but auto repairmen will do everything quickly and efficiently. It is worth warning that any diagnosis of this malfunction begins with checking the ECU, and if the car enthusiast does not understand this process, it is worth contacting professionals so as not to disrupt anything in the operation of the car.
Catalyst
If the car's mileage is less than 100 thousand kilometers, most likely it still has a catalyst. By this time, it may already become clogged and not perform its direct function. Inside the catalyst there are small honeycombs on which carbon deposits accumulate over time. As a result, the gases cannot leave the combustion chamber normally, and the engine “suffocates.”
What is the solution to this problem? It's simple: instead of a standard catalyst, a flame arrester or just a straight pipe is installed. Another, most cost-effective solution is to remove the ceramic core of the catalyst mechanically. Access is provided after opening the case with a grinder, after which the hole is welded. This will not harm the engine. The maximum that will change is the smell of exhaust gases and their toxicity. But since we do not yet control any environmental standards, owners of used VAZs and foreign cars are completely getting rid of catalysts. The cost of a new element is more than 20 thousand rubles, and they are almost out of stock.
Why is a warning system needed?
A panel that flashes periodically or is constantly on, which depicts an engine outline, or has the inscription “Check Engine” can be translated as “check the engine.” Its appearance warns the driver about emerging problems in the power unit. Most of all, its appearance worries novice drivers, but there is no need to be afraid, you just need to diagnose the engine and then eliminate the identified faults. The first such blocks were connected to an on-board computer; its main purpose was to control the carburetor of the power unit.
Cars are constantly improving, and so are electronic control units. Now they control other systems, such as ignition, supply, formation of a combustible mixture, engine speed, and other parameters. As a result of this modernization, the reasons for the control unit to react have become many times greater, so it has become much more difficult to understand the reasons for the appearance of warning signals, and sometimes it is completely impossible to do without special equipment
According to the regulations, spark plugs need to be changed every 15-20 thousand kilometers. Many new products can last longer, but here you should take into account the fact that the car is operated carefully and is always refueled with high-quality gasoline, which is not always possible. Therefore, it is worth doing everything in advance.
Another very important point is the type of candles. As a rule, the car's operating books indicate all the necessary parameters, including the spark plugs that should be used for a given engine. Many drivers neglect these regulations and become frustrated in the future. For injection engines, special spark plugs are produced, the parameters of which must correspond specifically to your car. Try to keep an eye on this when purchasing new ones.
The second ignition element is a module that replaced the distributor. It eliminates the need to adjust the lead angle, as was done before. However, the module can also cause certain malfunctions. An electronic malfunction leads to a violation of the desired angle, which leads to various consequences:
- Increased fuel consumption
- Dips when pressing the gas pedal
- Popping sounds in the exhaust system
- Deterioration in dynamics
- Long engine start
These were the most common reasons why the check for a VAZ 2114-2115 might light up. We wish you good luck on the roads!
Mass fuel flow sensor (MAF)
This element is available in any injection VAZ. It is a plastic element, inside of which there is a thin platinum thread. When the driver turns on the ignition, voltage is applied to this thread, which increases the temperature due to high resistance. When the engine starts, the air that enters the pipe cools this thread. As a result, resistance and voltage change. This information is read by the controller. This is how the control unit “finds out” how much air has passed through the mass air flow sensor.
If the sensor is faulty, the ECU puts it into emergency mode. At the same time, a “check” lights up on the panel. Indirect signs of a malfunction of the mass air flow sensor are:
- Unstable engine operation at idle.
- Long-term start of the internal combustion engine.
- Poor acceleration dynamics.
- High fuel consumption.
What to do if the VAZ-2114 is not? The sensor cannot be repaired and must be replaced entirely.
Meaning and interpretation of error codes
To read the faults, first consider the list with a table of UEr errors that self-diagnosis produces (the author of the video is Ivan Vasilyevich).
| Number | Description |
| 1 | Problems with the functioning of the microprocessor. |
| 2 | Self-diagnosis of the VAZ 2114 detected problems with the electrical wiring of the fuel level indicator controller. The signal level coming from the sensor may be too high or low. It is necessary to test the controller and check the wiring. |
| 4 | Increased voltage in the on-board network. |
| 8 | Low voltage. What to do: in this and in the previous case, the battery and generator must be checked. |
| 12 | There is a problem with the diagnostic indicator circuit on the instrument panel. |
| 13 | The control unit cannot detect the signal coming from the oxygen controller. |
| 14 | An increased signal is received from the refrigerant temperature controller. |
| 15 | The problem is in the operation of the coolant temperature sensor (coolant temperature sensor) - the on-board computer records a reduced signal level. |
| 16 | There is increased voltage in the car wiring. |
| 17 | Reduced voltage in wiring. |
| 19 | Problems have been reported in the operation of the crankshaft position sensor (CPS). An incorrect signal is sent to the control unit. |
| 21 | Problems with the operation of the TPS controller (throttle position sensor). There may be problems with the throttle valve. Check the connection circuit and sensor. |
| 22 | A reduced signal is sent from the TPS. |
| 23 | The intake air temperature controller gives an increased signal. |
| 24 | There are problems with the speed controller. Its failure can be diagnosed by a non-working speedometer. |
| 25 | Reduced signal from the incoming air temperature controller. |
| 27,28 | Incorrect signal coming from the CO sensor. |
| 33,34 | Malfunctions of the mass air flow sensor (mass air flow sensor). Check the flow meter connection circuit and its functionality. |
| 35 | The ECU has detected a deviation in the idle speed values. The sensor may be faulty. |
| 41 | Incorrect pulse coming from the phase controller. |
| 42 | Problems with the electronic ignition wiring. |
| 43 | An incorrect pulse is supplied from the detonation controller. |
| 44,45 | Problems with the composition of the combustible mixture. It can be depleted or over-enriched. |
| 49 | Check for vacuum loss. |
| 51,52 | Problems in the functioning of the PROM or RAM. |
| 53 | There is no CO controller pulse. Open circuit or sensor failure. |
| 54 | No impulse is received from the octane corrector controller. |
| 55 | When the load on the power unit is reduced, the ECU detects depletion. |
| 61 | Problems with the oxygen controller. |
These codes can add up; if you see the number 6, this may indicate errors 2 and 4, or if the number 9 is displayed, errors 1 and 8.
In order to immediately read and decipher problems when diagnosing, it is advisable to download and always carry with you a printout with a description. When diagnosing using a computer, codes on engine 21124 may differ depending on the car model. To read the codes, you need to know how they are supposed to be deciphered. Errors must be reset after they have been deleted (the video was filmed and published by the KV Avtoservis channel).
| Number | Decoding |
| p0102, p0103 | An incorrect pulse is supplied from the mass air flow sensor controller. This means you need to check the wiring. |
| p0112, p0113 | 112 or 113 - the incoming air temperature sensor needs to be replaced. |
| p0115-p0118 | Errors from 0115 to 0118 - the antifreeze controller sends an incorrect impulse. There may be problems with the wiring or the sensor itself. |
| p0122, p0123 | TPDZ. The controller is sending an incorrect signal. If the wiring is damaged, interference may occur. |
| p0130, p0131 | The lambda probe requires diagnostics and replacement. |
| p0135-p0138 | Error 0135 and higher - the lambda probe heating regulator needs to be replaced. |
| p0030 | The ECU reports problems in the electrical circuit in the area from the lambda probe heater to the converter. If error p0030 occurs, you need to test the electrical circuit and the sensors themselves. |
| p0036 | P0036 - a break in the wiring of the heating device DK-2 was detected. |
| p0300, p0302 | When codes 300 and 302 appear, the ECU reports a misfire. |
| p0301 | Gaps were detected in the cylinders of the power unit. Compression needs to be checked. |
| p0325 | The knock sensor is not working correctly. In particular, we are talking about a break in the connection wiring. |
| p0335, p0336 | P0036 error VAZ 2114 or 10335 - the DPKV has failed or its connection circuit is damaged. If the wiring is intact, then the sensor is replaced. |
| p0340 | Phase sensor malfunction. |
| p0341 | Error VAZ 2114 0341 means a problem with the camshaft controller. |
| p0342, p0343 | Problems with the phase controller. With such an error, detonation of the car engine is possible. Most likely, only replacement will solve the problem. |
| p0346 | P0346 VAZ error - also a problem with the phase regulator. |
| p0363 | P0363 - misfire of the combustible mixture was detected. In cylinders that refuse to work, the fuel supply is cut off. |
| p0422 | Failure to operate the neutralizing device. |
| p0443, p0444, p0445 | Malfunctions 0443, p0444 and 0445 - adsorber regulator, purge is not carried out. |
| p0480 | The engine cooling fan device has failed. The power unit may overheat if it is not replaced in a timely manner. Before replacing, you need to check the connection contacts to the wiring. |
| p0501-p0504 | Error 0501 VAZ 2114 and error code 0504 - the speed controller refuses to work. The device needs to be replaced. |
| p0505, p0506, p0507 | The idle speed sensor does not work or does not work correctly. Its failure can lead to floating idle speed. Possible engine tripping. The controller itself is tested and the wiring is checked. |
| p0607 | The knock controller operates intermittently. |
| p1135 | Error 1135 VAZ 2114 - you need to test the oxygen controller. |
| p6060 | Processor failure. If the fault remains after resetting the code, then the controller must be replaced. |
| p2020 | It is necessary to test the intake flap position sensor. |
| p1617 | Error 1617 - Rough road controller, wiring damage. |
| p1513 | There is a short circuit in the wiring of the idle speed sensor. It is necessary to test the electrical circuit and check the contacts. |
| p1602 | Failures in the voltage supply to the vehicle's electrical network are detected. |
| p0560 | Incorrect voltage level in the on-board network. This parameter can be overestimated or underestimated. The car battery, as well as the generator unit, are subject to testing. |
| p1514, p0511 | The appearance of these errors indicates a problem with a break or short circuit in the IAC (idle speed regulator) wiring. First of all, diagnose the sensor contacts, and then test the circuit, if possible. The sensor itself may also be damaged. |
| p1303 | P1303 - A detected misfire of the air-fuel mixture in the third cylinder is reported. The malfunction must be corrected as quickly as possible, since it can be critical for the neutralizer. |
| p1578 | Throttle valve malfunction. Literally, the problem stands for “zero adaptation parameter is outside the permissible value.” There are several options to solve the problem. The first thing you need to do is clean the throttle valve. If this does not help, then the throttle is adapted. To do this, you need to activate the ignition, and then start the engine after 40 seconds. Alternatively, you can test and tighten the contact terminals on the throttle. |
| p1621 | Malfunction of the RAM, memory problems in the control unit. Detailed testing of the computer is required. |
| p0650 | Problems in the control circuit of the on-board computer error code indicator State. |
| p2135 | P2135 - malfunction of the throttle assembly. If replacing the sensor and cleaning the damper did not help, then the problem may have to be solved by flashing the on-board computer. |
| p2187 | Lean mixture in internal combustion engine cylinders. You need to do a detailed diagnosis of the problem. |
If the car is equipped with HBO
Some owners install gas equipment on their VAZ. If a fourth generation system is installed, it will definitely interact with the engine electronic unit. If the pressure in the gas line drops or the gearbox malfunctions, a yellow lamp may light up on the panel. It is recommended to carry out further diagnostics at a specialized service station.
We also note that cars with gas equipment have their own “check”, a gas filter. Sometimes they forget to change it. The recommended replacement interval is 30 thousand kilometers. In many ways, the condition of this filter depends on the quality of the gas being charged.
The oil can indicator light came on while driving.
In cases where the oil pressure light suddenly comes on while the car is moving, it is advisable to stop immediately. Probably the following failure or breakdown occurred:
- the oil level in the engine unit is below the Min mark;
- the oil filter could be clogged - this leads to the fact that the pressure invariably decreases;
- it's time to change the oil - in cases where the car owner does not replace the substance in the engine for a long time, it loses its working properties.
Useful video
You can get more information from the video below:
Published October 2, 2019
There is no place in a modern engine where oil is not used to lubricate rubbing parts. Today, choosing oil is a much more important task than choosing a gas station. Therefore, a lack of oil is a much more fraught consequence than a lack of gasoline. The oil level in the engine crankcase is monitored by an oil level sensor. Its main and only task is to alert the driver about low oil level.
The operating principle of such devices is to measure the level of current resistance. Immersed in liquid, the sensor produces a higher output resistance than a dry sensor. By the way, it should be mentioned that the oil pressure sensor and the oil level sensor are completely different things. The oil level sensor on the VAZ is located next to the oil filter.
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What can cause the engine to run unstably?
Most often, the “check” can blink and the engine may run unstably when the fourth cylinder of the injector, which has 8 valves, fails. However, this formulation is incorrect, the reasons may be the following:
- problems with the spark plug;
- low compression in cylinders;
- the valves have not been adjusted for a long time (they do not fit tightly);
- the injectors are clogged or overfilled (they will have to be replaced);
- spark plug wire breakdown;
- ignition coil malfunction;
- The crankshaft sensor is not working correctly;
- the electronic control unit has failed;
- the timing belt is misaligned (or it has completely fallen off);
- Air filter contamination.
All these reasons lead to the failure of the cylinder and the appearance of characteristic signs of a malfunction.
In this case, problems can occur simultaneously or after a certain period. Pay special attention to the following signs:
- increased engine vibration during operation - the operation of valves, rotating parts of the power plant and transmission is disrupted;
- an increase in fuel consumption and a change in the nature of exhaust gases (they will contain unburned fuel);
- reduction in engine power and reduction in vehicle maneuverability.
The car owner's reaction to the indicator's operation
It is worth immediately understanding that the light of the check does not always indicate some kind of malfunction.
How to recognize a problem signal:
- If it flashes when you start the engine and immediately stops, everything is fine, just check the operating parameters.
- If it lights up and does not go out for a long time or lights up constantly, there is something wrong with the engine. But the reason may not be serious, so you shouldn’t panic right away. Of course, a critical breakdown cannot be ruled out either.
Check 2114 is on: how to fix the problem
Of course, it is better to identify and eliminate the causes of the check engine light at a service station, but in most cases an experienced driver will be able to solve the problem on his own.
- If the oil level is insufficient, top up.
Do not forget that the oil level cannot be measured immediately after turning off the engine.
- If there are errors, the ECU will need to reset/zero the existing settings to factory settings. If this measure is not enough, the software should be replaced. To solve this problem, you will need not only an understanding of how auto electricians work, but also special equipment (laptop or tablet, K-line cable and the software itself).
Please note that for ECUs (January class) it is advisable to choose Custom firmware, since most of the software “bugs” are already fixed in them.
- If a check light is on in a VAZ 2114 due to poor fuel quality, then, as a rule, car drivers not only completely drain the gasoline from the tank, but also “bleed” its remnants from the system. Although one of the reasons why the check light on a VAZ 2114 comes on is poor quality fuel occupies a leading position, but it is quite difficult to accurately diagnose it.
- If there is a problem with the ignition system, you should check the gaps between the electrodes of the spark plugs (the indicator should not exceed 1.3 mm). Old spark plugs should be replaced. In addition, the explosive wires should be checked and, if problems are found, replace damaged ones with new ones.
Next, you can check the coil for the presence of a spark and measure the resistance of its windings with a multimeter.
- A breakdown of the lambda probe (another name for the oxygen sensor) will also give an alarm signal to the ECU and, as a result, a check will light up on the dashboard. An indirect sign of such a problem will be a slight increase in gasoline consumption. In this case, the optimal solution would be to replace the lambda probe with a new device.
- Problems with catalysts usually arise due to the systematic use of leaded fuel. A damaged device must be replaced.
- Problems in the fuel system that cause the check indicator to light up on the instrument panel of the VAZ 2114 can be eliminated by flushing the injectors. In addition, you should check the pressure level in the fuel rail (the optimal indicator is not less than Zatm). If the pressure does not reach the required 3 atmospheres, then it is worth washing the filter. If even this measure does not help, you will have to change the car’s fuel pump.
If the driver has equipped his car with LPG, then when a check appears, additional diagnostics will be required, since, in addition to the main causes, the source of the problem may be a malfunction of the gearbox or a drop in pressure in the fuel line.
In conclusion, this is a fairly convenient function that, when turned on, promptly signals to the driver that there are problems. From the information presented in this article, it becomes clear that you can independently find and eliminate the reasons that led to the fact that the check light is on in the VAZ 2114.
To do this, the car enthusiast will need: desire, skill, special tools and equipment. However, car service technicians can handle such tasks with maximum accuracy and efficiency. In addition, contacting them can significantly save you not only time, but also money.
This is explained by the fact that the qualifications of good craftsmen allow them, in some cases, not to completely replace a part/assembly, but to carry out its repair, which, as a rule, is much cheaper.
It’s up to you to fix the problem with a burning check on your own or contact a car mechanic.
The main thing is not to ignore the problem, identify its source in a timely manner and eliminate it. Only in this case can we say with confidence that your car is in excellent condition and can easily cope with overcoming any distances.
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- Wiring diagram VAZ 2114 injector 8 valves with description
- We find out how to change the light bulbs on the instrument panel of a VAZ 2114
My father has a VAZ 2114, and a month ago the check light on it came on, he went straight to the service station, well, the assumptions were not the most rosy, but in the end it turned out that the sensor “flyed”, and there was nothing serious. So this also happens.
On my car it often happens that a check appears. After I contacted the service center, they told me that the on-board computer had generated errors and that there was an incorrect signal somewhere. Errors have been cleared. The check no longer lights up. They also advised to always check the spark plugs, as well as the fuse. Today it caught fire again, I did everything they advised me, it didn’t help. After reading this review, I still understood the main reason, and now the check no longer lights up.
Hello. After reading your article, I noticed that the check is lit mainly due to significant reasons. as stated at the beginning, every self-respecting driver should understand what malfunctions cause the check to light up on a VAZ 2114. Personally, I drove for a long time with a check and did not contact car maintenance specialists. I drove the car for 2 years without any problems and now I’m thinking of selling it. How much do you think I will have to reduce the price due to a problem with the check engine?
The check light in my car has been flashing periodically since I bought it. I tried to eliminate the cause myself, but nothing worked. I went to a competent electrician and they did a diagnostic. The problem turned out to be the mass air flow sensor, so I replaced it. After that, the icon did not light up again. Although I would never have thought that the reason was this sensor, it was the oil.
The check light in my car has been flashing periodically since I bought it. I tried to eliminate the cause myself, but nothing worked. I went to a competent electrician and they did a diagnostic. The problem turned out to be the mass air flow sensor, so I replaced it. After that, the icon did not light up again. Although I would never have thought that the reason was this sensor, it was the oil.
Thanks for the article, very informative.. I encountered the same problem. You fill up at a “bad” gas station, the “check” starts to light up, and you assume that the problem is in the gasoline. After replacing the gasoline, the problem did not solve. It was decided to start searching for the problem on the Internet. After reading the article, I checked all the components, it turned out to be a lambda probe. The problem was solved. I learned a lot of information on your site. 5 out of 5.
You write here that if there are ECU errors, you need to reset the settings to factory settings. Can I do this by removing the terminals from the battery?
I read it and didn’t understand - the conversation was about something - it’s not a foreign car - everything is in a printed version - open it and read it and try it - apply it, and they found everything right away on the Internet - just pens and your own head - a real doctor.
I spent a long time searching for the reason. I tried removing the terminal from the battery, and it worked.
Check 2114 is on, how can I find out the reason?
Vibration idle 2114
Good day Sergey and everyone wandering in search of solutions like me. I had a similar illness - on my VAZ 2114, 2005 with an 8-valve engine, the following happens: when driving for a long time at one speed, the “Jackie Chan” lights up and immediately the traction disappears, so much so that it feels like I’m still behind the car is on a rope and I’m dragging it... at the same time there is an obvious tripping of the engine, but then after some time this program disappears on its own, or rather the CHECK goes out and the traction is restored, in short the car lives its own life. The spark plugs have been changed, the oil too, the wires are new! By the way, I have HBOT and I blame it, but has anyone encountered a similar problem and have any advice?
Diagnostic features
Before replacing the old device, it must be removed and checked. The easiest way to check is to plug in a known-good device into the network.
Another way is to screw a pressure gauge in place of the sensor. If the tester shows a pressure of 0.65 kgf/cm2 or more, this indicates that the system has normal pressure and the cause is a faulty device.
If you don’t have a pressure gauge at hand, you can check the sensor in the following way:
- unscrew the regulator;
- crank the starter without starting the engine;
- If oil flows from the socket, then the sensor is faulty and needs to be replaced.
Replacing the sensor
In a Priora car, replacing the oil pressure sensor is not very difficult even for novice car enthusiasts who do not have practical experience in plumbing. It is performed if the causes of the defect are determined, if the oil pressure sensor in the power plant lubrication system is on. The procedure for replacing the oil pressure sensor is as follows:
- Turn off the power plant.
- Remove the plastic motor cover.
- We remove the car wiring block from the product.
- We unscrew the device using a socket wrench and remove it from the technological hole in the body of the cylinder head.
- When installing an updated product, it is necessary to install a metal sealing ring.
- We are installing a new device. This completes the installation.
If the oil pressure sensor lights up even with the updated device, it is necessary to test the pressure value in the vehicle’s lubrication complex. For this purpose, instead of the removed device installed in the cylinder head of the engine unit, we screw in an adapter on which the pressure measuring device is installed.
When monitoring the pressure parameter in the lubrication system of the power plant, you should know that the indicator of this physical quantity on the engine at idle speed should be at least 0.5 bar.
