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.
The first Check Engine sensors appeared in the 80s, they were invented to monitor the operation of the carburetor, so if the Check Engine light came on, it could only mean one thing - the carburetor was faulty. Over time, this “light bulb” was followed by other malfunctions that were already associated with malfunctions of the engine, as well as its various systems. Consequently, with the advent of new “responsibilities”, interpreting the appearance of the Check Engine has become quite difficult. The Check indicator lights up after the ECU detects problems with the engine. Various sensors report this to him, based on this the first conclusion can be drawn - the Check Engine can light up even if the sensors themselves malfunction.
It is considered normal for Check Engine to appear after you turn the key in the ignition; after you start the engine, the inscription should disappear; if this does not happen, read about the reasons why this error may appear. When you start the engine, the ECU checks all systems and if there are no problems, the Check light goes out, but if the computer finds a breakdown, the light will not go out until you fix the problem or make an error.
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.
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.
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.
Motor trouble: signs
If the engine starts to stall, the check engine blinks. But the indicator does not always work, so other signs of malfunction must be taken into account. For example:
engine vibration increases. This is very noticeable at idle and cold speeds. If this phenomenon becomes permanent, then one of the cylinders has failed. But such damage occurs gradually, so not everyone detects it in time. This method is used in later stages of breakdown; spark plugs have changed color. If you remove them, you will notice that the head has become dark. This is due to carbon deposits and soot due to the lack of ignition of the mixture. This indicates obvious problems
Even with prolonged use of candles, their color changes slightly, but there is no soot; fuel consumption has increased - you need to immediately pay attention to the engine; The engine has become less powerful, which is noticeable when moving. It operates on three cylinders
Therefore, if at least one fails, the engine does not have enough torque resource; unstable exhaust sound, which is complemented by vibrations in the body; When accelerating or moving evenly, the car began to twitch.
You need to listen to how the engine works. If it starts to stall at medium or high speeds, then the valves are probably not functioning properly. One possible reason is an increased gap between them.
If at least one of the listed signs of breakdown appears, immediate action must be taken. If the engine starts up and the check light comes on, blinks and goes out, the driver may face a more complex problem in the near future. Specialists can fix it. In this case, repairs will be labor-intensive and financially costly.
Is it possible to drive the car?
Some people drive for months and even years with a burning check, so many people think that there is nothing wrong with this and they can move around calmly if the engine is running. In reality, everything is not so simple. Breakdowns can be different. You can drive with one with virtually no changes in engine operation, but the second will cause big problems after a few hundred or even tens of kilometers.
Therefore, if possible, it is worthwhile to find out as quickly as possible what is causing the light bulb to burn. After this, make a decision about whether it is worth moving by car or whether it needs to be repaired.
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.
Source
Table of the most common error codes
To find out the error code, you need to do the following:
An overview table of common error codes with explanations is presented below.
Error Code Table
Once the error code has been deciphered, you can safely begin troubleshooting the problem yourself. If serious damage is detected, you must take your car to a service station.
Why the VAZ-2110 check engine light is on and repairs
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.
Reasons for the check engine to fire
If you go back a little in time and remember the early 90s, then this light only signaled that the oil level was insufficient. But since a lot of time has passed since then, and progress does not stand still, this indicator can signal a lot of things due to several sensors connected to the light bulb.
Although there are various possible reasons, one piece of advice is common to everyone: if the check light stays on longer than usual, you need to show the car to a mechanic.
- The first reason, which was already mentioned earlier, may be an insufficient amount of lubricant on the parts. In order to determine the criticality of the malfunction, it is necessary to start the car and by ear determine the presence of extraneous sounds in the engine operation. You should also conduct a visual inspection for damage or leaks that could cause oil loss. If any of the listed problems are detected, the car must be delivered to a service station, and in order to avoid big problems, not under its own power, but with the help of a tow truck;
- the second common problem is gasoline of low quality or simply diluted, and this is a fairly common practice of careless sellers. When using fuel of inadequate quality, carbon deposits form on the spark plugs very quickly, which prevents the normal formation of a spark on all spark plugs. If one spark plug starts to flicker, the sensor will immediately signal this with a “check” light. The solution to the problem is quite simple - you need to replace the fuel with high-quality one. In addition, it is advisable to clean the spark plugs. Advice: do not buy gasoline from unverified suppliers, you will save 100 rubles, and repairs will cost 1,000;
- The third possible malfunction, due to which the VAZ-2110 16 valve check light is on, is a problem in the spark plugs themselves. The problem with the spark plugs will manifest itself when the car is moving, and this is especially noticeable at the beginning of the movement - small jerks will be heard. This can be resolved by simply replacing the faulty spark plug. Also check the gaps on all spark plugs, they should be 1.3 millimeters;
- The fourth problem for which the “check” lights up is a malfunction of the lambda probe. If this sensor fails, the data entering the system that regulates the fuel supply system is unreliable. This can lead to problems such as increased fuel consumption, disruptions in the operation of the catalyst and even its failure, deviations in the chemical composition of the exhaust gases from the norm and other troubles. Incorrect sensor readings may be due to sensor failure or simple contamination, which can be visually distinguished after removing the sensor;
- The fifth possible problem that the check engine “screams” about is a problem with the catalyst. As a rule, it is difficult not to notice, and it appears even before the warning light comes on. Signs of problems with the catalyst are, first of all, a significant decrease in power, poor acceleration of the car, as well as increased fuel consumption. To fix the problem, you should contact a specialist or replace the catalyst yourself;
- The sixth possible problem is a problem with the injectors. If this malfunction occurs, the injectors must be blown out, or replaced if they have become unusable;
- The seventh reason for the light to come on may simply be that the tank lid is not tightly closed, which breaks the seal, and the sensor reacts to this. This can be easily fixed by sealing the tank tightly.
Posts 8
1 Topic by n1k 2014-01-16 20:19:17
- n1k
- New member
- Inactive
- Registration: 2013-10-11
- Messages: 5 Thanks : 1
- Car: VAZ 2112
Topic: The check light comes on and the car starts to drive very poorly
!!TELL ME WHAT IS WITH THE CAR, SOMEONE MAYBE KNOWS WHAT!! car 2112. 16 valve, 1.6 The problem is this, the check light comes on and the car starts to drive very poorly, slowly, does not accelerate, idling fine. Sometimes the check disappears along the way and the car drives well, but it doesn’t last long, I went in for diagnostics and they said you have 7 errors, all sensors, crankshaft, etc. what are there in short, well, this can’t be, we reset everything and went for a ride until the receipt comes out, in general, the result was that the tank was full of dirt. mesh, top filter and injectors..(there is no supply under cylinder 2 and the computer turns off when it reaches 100 dips (something like that)). I replaced the mesh in the gasoline pump, the fuel filter, removed the tank, cleaned the tank, removed the injectors, washed them with my own hands (carbclean + syringe, Akum) I can’t say that all injectors had the same injection. but still, it’s not like it’s dripping, it’s blowing quite normally, it seemed to me.) Well, I put everything together, started it up seemingly fine, drove off - good, started to sharply step on the gas, the car starts to twitch. and the check light came on again..(driving seemed better, but still what’s the problem.)
2 Reply from kastet 2014-01-17 17:48:34
- kastet
- New member
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- Registration: 2014-01-17
- Messages: 1 Thanks : 0
- Auto: 21124
Re: The check light comes on and the car starts to drive very poorly
Did you measure the rail pressure? I'm afraid to make a mistake, but your rail pressure should be 3.8
3 Reply from sergo9531 2014-01-17 19:38:02
- sergo9531
- Local
- Inactive
- From: Domodedovo
- Registration: 2014-01-12
- Messages: 578 Thanks : 208
- Auto: 21114
Re: The check light comes on and the car starts to drive very poorly
There was a similar problem (except for 7 errors). Troil from time to time. Moreover, there was no connection. Diagnostics showed misfires in the 3rd cylinder. I replaced the spark plugs, everything works, BUT in certain modes (1500 rpm) you let off the gas and it seems to stall (misses in some cylinder), it drives jerkily in traffic jams. And today it started bothering me again. Now I'm blaming the ignition coil (they say it's a problem unit). I need to go for diagnostics, I don’t have time.
4 Reply from n1k 2014-01-18 00:47:56 (2014-01-18 03:32:22 edited by n1k)
- n1k
- New member
- Inactive
- Registration: 2013-10-11
- Messages: 5 Thanks : 1
- Car: VAZ 2112
Re: The check light comes on and the car starts to drive very poorly
Yes, there are also misfires in cylinder 2, but I checked the entire fuel system, and today I experimented with spark plugs, and I just need good spark plugs. and the problem is solved)
5 Reply from Idol174 2014-01-20 20:41:29
- Idol174
- New member
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- Registration: 2014-01-20
- Messages: 2 Thanks : 2
- Car: VAZ 21102
Why does the check light on VAZ 2110 light up?
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.
Vehicle characteristics
In 2001, the line of the VAZ automobile concern was replenished with the five-door hatchback VAZ 2114. The platform for creating the model was the VAZ 2109. Basically, the car was equipped with 4 cylinder 8 valve engines. The power system consists of an injection mechanism and an electronic control unit.
Engine operation is controlled by special sensors that inform the central module about engine performance. The module processes information and sends an impulse to the devices that need to be activated at the moment:
- prepares the required mixture quality depending on the speed and engine speed;
- distributes the spark among the cylinders in a certain sequence.
During production, the model was equipped with different engines.
| Parameter | Meaning | ||||
| Engine | 2111 | 11183 | 21124 | 21126 | 21114 |
| Configuration | L4 | L4 | L4 | L4 | L4 |
| Volume, l | 1499 cm3 | 1596 cm3 | 1599 cm3 | 1597 cm3 | 1596 cm3 |
| Number of valves per cylinder | 2 | 2 | 4 | 4 | 2 |
| Piston stroke | 71 mm | 75.6 mm | 75.6 mm | 75.6 mm | 75.6 mm |
| Cylinder diameter | 82 mm | 82 mm | 82 mm | 82 mm | 82 mm |
| Compression ratio | 11,5 | 9.6 — 10,0 | 10.3 | 11 | 9,6 |
| Gas distribution mechanism | OHC | OHV | OHV | OHV | OHV |
| Rated power | 77 l. With. at 5400 rpm min. | 82 l. With. at 5300 rpm min. | 89 l. With. at 5 thousand rpm min. | 98 l. With. at 5600 rpm min. | 81.6 l. With. at 5200 rpm min. |
| Max. torque | 116 Nm, at 3 thousand rpm. min. | 125 Nm, at 3 thousand rpm. min. | 131 Nm, at 3700 rpm. min. | 145 Nm at 4 thousand rpm. min. | 125 Nm, at 3000 rpm. min. |
| Supply system | injector | injector | injector | injector | injector |
| Maximum speed, km | 160 | 167 | 172 | 182/175(automatic transmission) | 175 |
| Acceleration time from 0 to 100 km/h, s | 15 | 13,2 | 12,4 | 11,2/13,1 | 12,5 |
| Fuel | AI 93 | AI 95 | AI 95 | AI 95 | AI 95 |
| Claimed gas mileage | 7.6 l/100 km combined cycle | 7.8 l/100 km combined cycle | 7.0 l/100 km combined cycle | 7.2 l/100 km combined cycle | 7.2 l/100 km combined cycle |
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.
What is this light bulb for?
VAZ 2110 engine light comes on
It is simply impossible to imagine modern cars without special sensors. They are the ones who signal the emergence of problems and various malfunctions. If previously the owner of the car had to independently, so to speak, “manually” detect malfunctions, today this is not the case. The electronics took care of all the worries and there are quite a lot of such sensors on the VAZ 2110. The Check Engine light is a special light that usually glows yellow and helps the driver determine how the car's engine is operating. In normal mode, this same lamp lights up for a few seconds and immediately goes out as soon as the engine picks up speed. What to do when the light comes on and does not go out, even while the car is moving?
Note. As soon as the owner of a VAZ 2110 discovers that the engine light is constantly on and does not go out, he should immediately drive to a service station, if one is nearby. If not, then you need to turn off the engine and call a tow truck, as you can simply destroy the engine.
VAZ 2110 engine light came on
Let's go back to the 90s, when car owners knew that this sensor or lamp, in a simple way, could only report carburetor malfunctions or insufficient oil in the engine. Today the situation is completely different and if the lamp stays on, then anything is possible: incorrect engine speed, ignition problems, problems with the automatic transmission, etc. In a word, today this same sensor controls many parameters.
Causes
Let's look at the most famous ones.
Oil
VAZ 2110 engine fault lamp
Poor quality fuel
Candles
VAZ 2110 engine fault light
Advice. You can also identify faulty spark plugs while the VAZ 2110 is moving. When accelerating the car, especially from a standstill, small shocks are felt. Note. It is imperative to monitor the spark plug gap between the electrodes, which should not exceed 1.3 mm.
Coil
Oxygen regulator
VAZ 2110 light check engine
Note. If you do not replace this sensor, which is known to be the oxygen regulator in the car and part of the exhaust gas system, there will be problems with fuel consumption. The very malfunction of this sensor will mean that the on-board computer receives incorrect data, which will significantly increase not only fuel consumption, but also significantly reduce engine power.
Oxygen sensor VAZ 2110
Engine failure indicator lamp VAZ 2110
Catalyst
Note. This element helps make exhaust gases environmentally friendly. This is a mandatory condition in recent years. The catalyst is responsible for converting carbon monoxide and other harmful substances into harmless compounds.
Indicator lamp, check the engine for VAZ 2110
Note. Usually the catalyst does not fail if the car owner regularly carries out maintenance. The owner should pay special attention to the oxygen sensor and replace the faulty one in time so that the problem does not spread to the catalyst. In addition, you need to monitor the spark plugs, which need to be replaced after the end of their service life.
Injectors
Fuel pump or filter
Fuel pump VAZ 2110
Tank cap
Engine fault lamp VAZ 2110
Mass air flow regulator
Note. If this sensor malfunctions in the cold season, it will be difficult to start the car.
VAZ 2110 engine light reasons
High voltage wires
Note. High-voltage wires can cause a number of special problems for the motorist, owner of the VAZ 2110, therefore a separate chapter is devoted to this component.
Note. Normal insulation (with a resistance value greater than a megohm) of 500 kOhms or more is considered normal. If the value is lower, the wires must be replaced, as they pass current.
The above reasons for a light bulb to light up are the most common. You can inspect and replace damaged spare parts yourself, thereby saving the cost of services at a service station. The main thing is to do everything according to the instructions, studying photo and video materials in the process.
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.
Check the fuel filler cap
Many drivers, in most cases, when the “check engine” indication appears, will think about serious problems in the car’s engine, but will not even think about checking the tightness of the fuel system, which may be compromised due to a defect or an insufficiently tightened fuel tank cap. This is a very common reason for the appearance of the “Check” engine icon.
Reason for the error: Leakage of the fuel system due to the passage of air through the filler cap of the fuel tank will increase the vehicle's fuel consumption, to which the vehicle's diagnostic system will generate an engine error by turning on the "Check engine" indication on the vehicle's instrument panel.
What needs to be done: If, when the “Check” indication appears, your car has not lost power, and there are no audible signs of engine damage (engine knocking, humming, creaking, etc.), then first check the gas tank for leaks. Your gas cap may be cracked or not tightened enough. If the cap was not tightened enough, then after tightening it all the way, continue driving the car for a while to see if the engine error disappears. To prevent a check engine light from appearing for this reason, check your fuel filler cap regularly. Remember that the cover must be replaced with a new one periodically!
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.
What does it mean
Check Engine is translated from English as “check the motor (engine).” The error code is indicated as follows: P0102… P0616.
The first letter of the error code identifies one of the car systems in which the breakdown occurred. There can be 4 codes in total:
The second character after the letter indicates the type of error. The breakdown can be general (the same for all OBD II engines) or specific (for a specific car).
When the check icon appears
The second character of the error code is indicated by the following numbers:
The third character of the error code is the car subsystem where the failure occurred. The following numbers may appear on the receipt icon in your car:
The fourth and fifth characters of the error code indicate its serial number.
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.
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.
Using the Scanner
Using a scan tool is the easiest way to reset your check engine light. Here are 5 simple steps:
Connect the scan tool to the OBD connector under the steering column. A laptop or tablet with the appropriate software is installed in the holder; Then turn on the car’s ignition and, accordingly, turn on all the gadgets; On the mobile device, in the appropriate section, by pressing the “READ” button, we look through the engine error codes. We write down the codes with a pen in the order in which they were received. This will be necessary for subsequent repairs.
We delete the error code. Press the “ERASE” button on the scanner. The Check Engine light will turn off when all error codes are cleared. Some scanning tools have many options, such as freeze frame, which captures the sensor readings. When deleting codes, these readings will also be deleted. Note: in some scanners, the option to clear codes may be automatic and use the “CLEAR” or “YES” button instead of the “ERASE” button. Don’t forget to turn on the ignition before clearing codes.
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.
Source
