Why the check light is on for a VAZ 2110, injector, 8 valves, 16 valves

The engines installed on the VAZ 2110 are electronically controlled and have numerous sensors, information from which is processed by the engine control unit. If there is any problem, the Check Engine light comes on on the dashboard. The presence of such a warning indicates serious engine problems, so it is necessary to take the car to a service center as soon as possible and carry out appropriate diagnostics and troubleshooting. In this article we will tell you why the check light comes on on 8 and 16 valve VAZ 2110 engines.

Broken spark plugs

If the check engine light comes on on the dashboard of your VAZ 2110, first of all you need to pay attention to the condition of the spark plugs and high-voltage wires. Over time, the spark plug gap changes, resulting in a lack of spark in the cylinders, and the corresponding sensors determine whether there is a problem. That is why, as soon as such an alarm lights up, it is necessary to check the spark plugs for the presence of a spark. The car owner should also inspect the condition of high-voltage wires, which may have mechanical damage, which leads to improper operation of the power unit in the VAZ 2110. Remember that the spark plugs must be changed regularly, which will help avoid such problems with the car engine.

Is it possible to drive when the Check Engine light is on?

If you see that the Check Light has come on, the first thing you need to do is stop and listen, take a closer look at the operation of the engine. If everything is normal, the speed does not fluctuate, there are no noises, the fluid level (fuel, oil, coolant) is normal, you can continue driving, but upon arrival, be sure to visit a service station to determine the cause of the Check Engine. If the problem is resolved, then the Receipt sign should disappear soon, this can happen in an hour or in a day or two. If this does not happen, then the problem is not solved and the search for the fault must be resumed.

If you are unable to independently find the reason why this error occurs, contact a service station, where specialists, using special equipment, can easily determine the cause of the error and help eliminate it.

Source

Damage to the mass air flow sensor

The faulty engine warning light may also come on if there are problems with the air flow meter. Such a sensor (mass air flow sensor) often fails or starts to work incorrectly, which leads to problems with the motor. Problems with the mass air flow sensor in the VAZ 2110 engine can be indirectly determined by significantly increasing fuel consumption. Note that it is not recommended to operate an engine with such breakdowns, so if the Check Engine light comes on and fuel consumption increases, it is best to go to a service center and carry out high-quality computer diagnostics. The cost of spare parts and repair work in this case is not too high, which will allow you to fully restore the functionality of your car.

How to fix the problem?

First you need to identify the reason why the check light came on. Since there are many options, diagnosis is carried out first. It will help you identify a specific problem in order to understand what needs to be repaired and how. Procedure:

You can try self-diagnosis. This function is available in the on-board computer. Everything should be done as described in the operating instructions. There are also error codes that can help you identify the problem. But this method is not very effective; it only helps sometimes.
Computer diagnostics are much more accurate. With its help, you can determine the malfunction by code. It won’t be difficult to find a broken sensor or determine problems in the operation of components.

There are many videos on the Internet - they explain the reasons for the appearance of the check and show how to repair it. You can watch this video to better understand the topic.

Refueling with low-quality fuel

The Check Engine light may come on immediately after refueling with low-quality fuel. Such dirty and low-quality fuel, entering the engine, invariably causes increased detonation and improper operation of the injection system, and as a result, the engine control unit receives errors from the built-in sensors and a check light on the dashboard lights up. If such an alarm lights up immediately or shortly after refueling, it is most likely due to low-quality fuel. It is not recommended to operate the car in this case. You need to call a tow truck and take the car to a service center, where specialists will comprehensively diagnose the car and clean the fuel system. Otherwise, the injector may be damaged, which will lead to expensive engine repairs.

Reasons for the appearance of Check Engine on VAZs

The first reason, quite popular in our area, is bad gasoline. Often the check light comes on precisely because of poor fuel. This can be treated by draining the “bodyagi” and refueling with normal gasoline; if you feel sorry for gasoline, you can just wait until it runs out and refuel elsewhere with normal quality fuel.
Candles. Damaged or faulty spark plugs can cause a Check Engine Light. For example, if the spark plug has an incorrect gap or the insulator is cracked. The solution is to check or replace the spark plugs.
Low fuel level, gas tank cap not tightly closed. In both the first and second cases, a problem will arise with the pressure in the fuel system, after which the ECU will report the problem in the form of the appearance of a corresponding inscription.
Problems with the ignition coil. The lack of a spark will lead to misfires in the cylinders, and the lambda probe will report an error to the control unit. The solution is to check the ignition coil and replace it if it is faulty.
Problems with the lambda probe itself (oxygen sensor). In this situation, repair is impossible; as a rule, there is only one way out - replacing the oxygen sensor. You can, however, try to clean the Lambda Probe, but it is not a fact that this will lead to anything.
Catalyst malfunctions. Most often, this breakdown occurs on cars with decent mileage. The catalyst is killed as a result of oil problems when the engine takes oil. The oil consumption does not go unnoticed; the remaining oil does not burn completely and is deposited on the catalyst honeycomb. Also, problems with the catalyst can arise due to poor fuel or due to mechanical damage to the catalyst. This problem can only be solved in one way - by complete replacement.
Problem with injectors. The injectors may simply be clogged; the problem can be solved by flushing the injectors. If this does not help, the injectors will have to be replaced.
There are malfunctions in the fuel system, the fuel pump is acting up, the fuel coarse filter or fuel filter is clogged. To confirm or refute this assumption, it is necessary to measure the pressure in the fuel rail and check the fuel pump.
It happens that the Check Engine lights up due to problems with the BB wires. If there is a suspicion of their malfunction, it is necessary to check the high-voltage wires and, in case of malfunction, replace them.
The mass air flow sensor (MAF) is often the reason why the “Check Engine” lights up. In order to find out if there is a problem with the sensor, you need to check the mass air flow sensor. If it turns out that the sensor is faulty, replace it.

Problems with the ignition coils

High voltage ignition coils and problems with these components can also cause a warning to appear on the instrument panel. Such problems can be indirectly determined by the characteristic tremors of the car at idle. The car owner can check whether there is current on the coil and whether the contacts of the high-voltage wires are loose. If there are problems with the coils, it is best to replace them as a set. The VAZ 2110 engine has four high-voltage coils, the cost of which is at an affordable level, and every car owner can handle such a replacement.

Why does the check light on VAZ 2110 light up?

Lambda probe failure

On 16-valve modifications of the VAZ 2110 engine, a lambda probe is installed, which is responsible for analyzing exhaust gases. Over time, a layer of used oil appears on the surface of such a lambda probe, which leads to problems with the accuracy of the sensor’s readings. As a result, the Check Engine light comes on, and the car must be taken to a service center. It is impossible to independently determine the problem with the lambda probe. Only when diagnosing a car using special equipment can you determine the corresponding error codes, on the basis of which problems with the lambda probe will be identified. This element cannot be repaired and if it breaks, it is simply replaced with a new one.

Possible reasons for the check to light up

It doesn’t matter whether the injector has 8 valves or 16. The information in this section will help identify the problem on both types of engines. First of all, it’s worth figuring out what malfunctions are causing the light to light up. Sometimes you can identify a breakdown without even taking the car to a service center.

Broken spark plugs

A common problem, as spark plugs begin to not work as they should over time. There may be several reasons, but the most common ones are:

Carbon deposits have accumulated, causing the spark to not be very good.
The gap has changed due to burnt electrodes.
Ceramic insulation is broken.
Malfunction due to long-term use.
Failure of high-voltage wires. The insulation on them may be broken, which disrupts the operation of the system.

Advice!
To eliminate such problems, you need to change spark plugs and high-voltage wires.

The spark plugs must be unscrewed and inspected for carbon deposits. It is also necessary to check for the presence of a spark: it must be clear and strong enough. It is important that all candles spark approximately equally.

Throttle problems

This option is possible if the machine has been in use for a long time. The reason may be a malfunction of the mechanical part due to wear or carbon accumulation near the valve. Sometimes the opening and closing mechanism itself gets stuck.

The second reason, which is the most common, is failure of the throttle sensor. You can independently determine its malfunction, but it is quite difficult. It is much easier to take the car to a diagnostic shop, where they will check its performance.

Malfunction of the mass air flow sensor

The check engine on the VAZ 2110 very often lights up due to the failure of the mass air flow sensor. This option can even be called a disease of this model, so many people start checking with it. You can determine the problem yourself - gasoline consumption will increase very much.

If the check light is on and the car takes much more fuel than usual, you should immediately go to a car service center and have the mass air flow sensor diagnosed. This breakdown can be repaired quickly enough, and spare parts are inexpensive, so you shouldn’t drive with it and consume a huge amount of gasoline.

Use of low-quality fuel

If the check engine light comes on shortly after leaving the gas station, the cause is likely to be low-quality fuel. Because of it, the operation of the injection system is disrupted, detonation appears, and traction deteriorates significantly. The idle speed may also fluctuate, and failures during acceleration are often observed.

By the way! A loose or loose tank cap can also be a culprit.

The engine control unit receives information from sensors about improper operation of the system, and a light comes on on the panel. If this happens, it is better not to operate the car, but to drain the bad fuel and fill it with normal fuel. If the problem occurs on the road, you can drain most of it and add good gasoline. This also helps.

Sometimes you come across fuel of such poor quality that you have to flush not only the tank, but the entire system. If this is not done, the injector may fail, and repairs will cost many times more.

Low oil pressure in the system

This option is also often the cause of the problem. There may be several reasons:

Failure to comply with oil change schedules. Over time, the lubricant loses its properties, becomes liquid and becomes heavily contaminated. This prevents the pump from creating the required pressure in the system.
Poor quality oil. This is not difficult to determine, because the light will light up shortly after replacing the lubricant.
The oil pump is broken or is not working properly. Circulation is disrupted or stops altogether, which is very dangerous. If you drive with such a malfunction, the engine will fail due to overheating.

The channels through which lubricant flows may also become clogged. Most often, the reason for this is untimely oil changes, so you should not ignore the established periods.

For your information! You should first check the oil level in the pan. The reason may be a leak.

Problems with the ignition coils

Another option for why the check light is on is a malfunction of the ignition coils. They don't necessarily fail, but if there are any problems, it will inevitably lead to errors. It is necessary to check all connections to high-voltage wires, as they may be damaged.

Then test the coils. It’s easy to do this even with your own hands. If diagnostics reveal a problem, it is best to replace the coils as a set. There are 4 of them in the VAZ 2110, the price is low, so repairs will not be too expensive. You can change them yourself in a few minutes.

Burnt out catalyst

Another common reason for a signal to appear on the control panel. If this part of the exhaust system is burnt out, it can be easily determined by the loud exhaust sound and the smell that comes not from the pipe at the back, but from below. Sometimes there may be a connection problem.

Another option is that the catalyst is heavily clogged with soot, and therefore does not ensure normal passage of exhaust gases. In both cases, it must either be replaced with a new one or cut out. But if this part is removed, then it is worth inserting not a simple pipe, but a flame arrester so that the hot gases do not damage the remaining elements of the exhaust system.

Lambda probe failure

This element is installed only on 16-valve engines. It analyzes the composition of exhaust gases, helping to adjust the fuel mixture for its rational consumption. Over time, the sensor becomes covered with soot and fails.

It will not be possible to determine its malfunction visually. Only diagnostics will help. If it turns out that it is the lambda probe that has failed, it needs to be replaced. The sensor is unscrewed from the exhaust tract, the power connector is disconnected, and a new one is installed in the reverse order.

Burnt out catalyst

Problems with the catalytic converter can also cause a Check Engine Light. Such problems can be indirectly identified due to the appearance of an uncharacteristic exhaust sound, while the engine begins to smoke heavily. It is necessary to check the catalyst at a service station and if problems with this unit are identified, it must be replaced with a new one or cut out. It is not recommended to use a car with a damaged catalyst, as this can lead to various types of serious damage, including the need to overhaul the power unit.

Why is the Check Engine light on? Malfunctions and solutions

VAZs, like the vast majority of modern cars, have a lot of different sensors that monitor engine performance.
Like other engines, the power unit of the latest VAZ models has an ECU (electronic control unit), which, if faults or irregularities in the operation of the internal combustion engine are detected, can issue an inscription that many motorists are very afraid of. As you understand, we are talking about Check Engine, this is an error that means “check the engine,” literally. There is no need to despair over this error, as it can often indicate minor problems, such as bad fuel or the need to replace spark plugs. But unfortunately, there are situations when Check Engine can mean the “death” of the engine, so this error cannot be taken lightly, and at the first opportunity it is necessary to check all components that may be involved in the appearance of this error.

Knock Sensor

If a car has a knock sensor, it is responsible for dampening strong engine vibration through dosed fuel supply, thereby ensuring fuel savings (about 9%).

In addition to the above, the reasons may be: open or short circuit, mechanical damage to the wiring, slippage or breakage of the gas distribution mechanism, external overheating, increased induction fields, moisture, etc.

If you are not confident in your abilities, do not under any circumstances start troubleshooting, seek the help of professionals, especially since today ECU diagnostics are inexpensive, and based on the readable error code, it allows you to accurately identify the faulty engine unit.

No amount of savings on repairs will help you if you face the risk of serious problems.

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).

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.

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The engine is shaking, the check is flashing or on: the main causes of the malfunction

Experienced car mechanics and experts in the field of repair and diagnostics of faulty vehicles identify several reasons why the engine starts to stall and the check light comes on:

Low quality fuel.
No spark at the spark plugs.
No spark at the ignition coil.
The lambda probe does not work.
Faulty catalyst.
The injectors are clogged.
Lack of required pressure in the rail due to a faulty fuel pump.
High voltage wires are broken.

Most of the listed faults can be solved solely by transporting the car to a service center, followed by transferring it into the hands of an experienced technician. However, some of these problems can be solved independently, if you have the proper knowledge and skills. Read on to learn why the check engine light may blink and the engine stalls.