The VAZ company develops on-board computers so that fault codes for Lada 2115 and other models can be read in two ways at once. The self-diagnosis procedure involves collecting and decoding errors through the on-board display. This method is suitable for quick repairs and troubleshooting.
From 2005 to 2022, more accurate diagnostics became possible. A specially designed OBD2 port allows you to connect equipment to the car. An external computer shows problems down to every detail.
Reasons for error 8
Knowing what error number 8 on the instrument panel means, it is easy to determine the reasons for its occurrence. There are only two main reasons. This is a discharged or faulty battery or a failed generator.
For the latter, this most often indicates the need to replace the brushes, since the old ones are already worn out. In addition, the code may occur in such cases as:
Sometimes an error indicates other problems. But this happens very rarely.
You can determine the exact reason for this behavior of the car on your own. First, you should visually inspect the battery and generator and their contacts. You may notice oxides and other defects on the terminals and connectors. There is often visible damage to the wiring. The battery terminals may not be properly tightened. In rare cases, you may notice that the battery is swollen.
It is useful to check what the voltage is in the on-board network on the dashboard. You need to pay attention at what point it decreases or constantly remains low. You should also diagnose the battery and generator with a multimeter in voltmeter mode.
Battery diagnostics is performed as follows:
If the value is lower, then the battery needs to be charged. If after this, it does not charge completely or discharges quickly, it should be tested with a load fork. This can be done independently or at a car service center.
You should also check the operation of the generator. To do this you need:
Recovery
Is it possible to restore a broken sensor? This can be done only in one case - if the cause of the malfunction is poor contact and the sensor itself is working normally. You can also try removing the carbon deposits inside. But to do this, you need to take the sensor out and lower it into an aggressive environment (white spirit or gasoline).
Please note: do not use sandpaper, needle files or other rough objects for cleaning. To avoid damaging the tip, use a soft cloth soaked in solvent. By treating the sensitive element with white spirit, you can restore the functionality of the sensor. But it is not a fact that after cleaning it will take accurate measurements. Ideally, this element should be changed entirely. Fortunately, the operation is simple, you can do it yourself. We’ll tell you exactly how below.
How to fix the problem?
If the battery is low, it needs to be charged. This is done like this:
After charging, you need to check the battery voltage using the above method. If it is within the normal range, install it on the car. Observe for several days to see if the battery is draining. If rapid discharge occurs for no apparent reason, the device is likely faulty. Therefore, you will have to buy a new battery.
If the generator is faulty, it is usually enough to replace its brushes to restore functionality. To do this you need:
If this does not help or visible defects are found on the device, other parts will also need to be replaced. VAZ 2114 generators are repairable. You can repair them yourself. But in some cases, it is better to replace the electric generator or contact specialists to restore it.
If the low voltage is associated with other faults that you could not identify yourself, you need to visit an auto electrician.
Operating principle of DC (lambda probe)
The working surface of the sensor is a ceramic material coated with platinum.
The operating temperature of the surface is 350 degrees Celsius and above. Therefore, before heating the lambda probe, during the first 5 minutes after starting the engine, the working mixture is adjusted according to the readings of other sensors in the engine power system. To speed up the heating of the part to operating temperature, an electric heater is installed in it.
The principle of operation is as follows: exhaust gases cover the working surface of the lambda probe, which in turn reacts to the difference in oxygen levels in the exhaust gases and the environment. It then sends a signal to the ECU, which adjusts the fuel mixture.
VAZ (LADA) errors via OBDI protocol. Self-diagnosis.
1 — Malfunction of the engine control unit.
2 — The voltage in the on-board network is too high.
3 — Malfunction in the electrical circuit of the fuel level sensor.
4 — Malfunction in the electrical circuit of the antifreeze controller.
5 — Error in external temperature controller.
6 — Overheating of the engine (power unit)
7 — Emergency oil pressure in the engine.
8 — The voltage in the vehicle's electrical network is too low.
9 — Low battery level (battery is discharged)
12 — Malfunction in the electrical circuit of the malfunction indicator located on the instrument panel.
13 — No data (loss of communication) from the oxygen sensor (lambda probe)
14 — High signal level of the coolant temperature sensor (antifreeze).
15 — Malfunction in the electrical circuit of the coolant temperature controller.
16 — Increased voltage in the vehicle’s electrical network
17 — Low voltage in the on-board network
19 — Malfunction in the electrical circuit of the crankshaft position sensor.
21 — Malfunction in the throttle position regulator.
22 — Low signal level of the throttle position sensor
23 — High signal level of the intake air temperature sensor
24 — Malfunction in the electrical circuit of the vehicle speed sensor.
25 — Low signal level of the intake air temperature sensor
27 — Incorrect signal from the exhaust gas system sensor
28 — Incorrect signal from the exhaust gas system sensor
33 — Malfunction in the electrical circuit of the air flow meter
34 — Malfunction in the electrical circuit of the air flow meter
35 — The ECU has detected a deviation in idle speed
41 — Incorrect signal coming from the phase regulator
42 — Malfunction in the electrical circuit of the electronic ignition system
43 — Incorrect signal coming from the knock sensor
44 — The mixture in the engine cylinders is too lean or rich
45 — The mixture in the engine cylinders is too lean or rich
49 — Vacuum leak
51 — Malfunction of one of the memory modules of the control unit - RAM or PROM
52 — Malfunction of one of the memory modules of the control unit - RAM or PROM
53 — Incorrect signal coming from the exhaust gas sensor
54 — No signal from the octane corrector regulator
55 — Poor air-fuel mixture at low load on the car engine
61 — Malfunction in the electrical circuit of the oxygen sensor (lambda probe)
E - Determining an error in a data packet stored in EEPROM
Source
What codes should you pay special attention to?
Every VAZ-2115 car owner must pay attention when connecting automotive wall equipment to the following codes:
- P0562 or P0563, indicating a low or high voltage level in the electrical on-board circuit.
- P0506 or P0507 will indicate an incorrect idle speed setting, in particular, this error applies to the VAZ-2115 8-valve injector.
- P1301 or P1304 will help the car owner find out about a faulty car cylinder.
- If the cylinder injectors are not operating correctly, the on-board computer monitor will display codes starting with the value P0201 and ending with the code P0204.
- If the car computer displays code P0217, you should immediately stop operating the car, as the error will indicate engine overheating.
- P0300 will indicate a serious engine breakdown, which manifests itself as periodic fuel ignitions.
- Code P0304 will indicate a misfire occurring in the fourth car cylinder.
Every VAZ-2115 owner must understand that system diagnostics, which use data generated by certain sensors, are far from perfect. Therefore, it is best to entrust this task to professionals working at the service station.
When connecting bench equipment, you must pay attention to the following numbers:
- Problems with the electrical circuit of the board at a low voltage level are displayed by the combination P0562, and at a high voltage level - P0563.
- Incorrect setting of the injector idle speed (on the VAZ-2115 it has 8 valves) manifests itself as code P0506 at too low speeds or P0507 at high speeds.
- If a malfunction occurs in one of the cylinders, this may be indicated by one of the errors from P1301 to P1304 (inclusive).
- If the injectors on each cylinder do not operate correctly, then errors will be in the range from P0201 to P0204 (inclusive).
- If combination P0217 occurs, you should stop using the car, as it indicates an increase in engine temperature.
- A dangerous symptom is the occurrence of error P0300, which means random and multiple misfires of the fuel. In this case, you may need major car repairs. A related fault is code P0304, which means misfire in the fourth cylinder.
At the service station, conclusions are drawn not only from the on-board computer, but also from data obtained from an independent study of the vehicle’s systems. In this case, repairs can be carried out in a shorter time and at lower costs.
The first character means:
- B - malfunction of car body elements;
- C - problems with the suspension or chassis;
- P - malfunction of the power and transmission units, as well as the engine control unit;
- U - problems in the operation of information exchange buses.
The second character in the code means:
- 0 - standard SAE type;
- 1, 2 - factory type of fault;
- 3 - reserved.
The third character identifies the system in which the problem is detected:
- 1 and 2 - problems with fuel units;
- 3 - ignition unit and mechanisms connected to it;
- 4 — system for reducing exhaust gas toxicity;
- 5 — idle speed of the power unit;
- 6 - electronic engine control module and wires connected to it;
- 7 and 8 - transmission unit.
The last two characters are a number that corresponds to the error number in the OBD system.
When malfunctions occur in the operation of the engine or other systems, the “Check Engine” indicator is always on on the VAZ dashboard. Its presence may be due not only to a malfunction of the power unit, but also to problems with the wiring or poor contact of one of the sensors.
What does error 8 mean on the VAZ-2115: its solution
Self-diagnosis is also a good activity, but it is unlikely that you will be able to detect absolutely all the problems indicated by your car’s on-board computer. Separately, it should be noted that during home diagnostics and diagnostics in a service center, the error codes shown by the on-board computer will be completely different.
But how can you diagnose a car’s dashboard yourself, without resorting to using the on-board computer? To do this you need:
When carrying out such diagnostics, you will be able to see only two-digit error codes, while at a service station they will already be four-digit.
Separately, it should be noted that errors tend to add up. So, for example, if self-diagnosis showed errors 1 and 4, then error 5 will be shown on the screen. Any faults will be stored in the computer’s memory until they are reset manually. This is quite easy to do. You need to disconnect the terminals from the battery and wait a few minutes.
Why does the lambda probe die?
We have already clarified above that the service life of the oxygen sensor is 80-160 thousand km. You probably have a question: why is there such a spread in the resource, as much as 80 thousand km? In fact, it depends on the conditions in which the car was operated:
- Bad gasoline, the exhaust of which contains a lot of lead and iron, clogs the sensor electrodes after several fill-ups.
- Poor condition of oil scraper rings and caps. Because of them, oil can get into the mixture, and with it into the exhaust system.
- Due to clamped valves, pops are released into the exhaust system, which destroy the working surface of the sensor.
- Due to an incorrect mixture, ignition timing, as a result of which the sensor overheats, crackling from the high temperature of the converter or catalyst.
Deciphering error codes
From here it is easy to come to the conclusion that before you go to a car service station and pay your hard-earned money there, you should conduct an independent diagnosis.
Having seen the error codes shown by the on-board computer, as well as having correctly deciphered them, we can conclude that it is advisable to visit a service station. So, for example, if error 8 is detected on a VAZ-2115, it is not at all necessary to go to a service center, since the battery can be charged without resorting to the services of specialists.
There are many other errors, which will not be difficult to deal with on your own. As a result, the car will be fully operational, and money will be saved.
Source
Which one should I install?
Which oxygen sensor for the VAZ-2114 is worth buying? About the second generation there are two types of sensors. Old cars with 1.5 engines and an eight-valve cylinder head have sensors with code 0 258 005 133.
And models that were produced after 2004 were equipped with elements with code 0 258 006 537. What is noteworthy is that both lambda probes are produced by Bosch (at least that’s what it says on the label). The cost of a new sensor is about 1.2-1.8 thousand rubles.
Error codes VAZ 2115
The VAZ company develops on-board computers so that fault codes for Lada 2115 and other models can be read in two ways at once.
The self-diagnosis procedure involves collecting and decoding errors through the on-board display. This method is suitable for quick repairs and troubleshooting.
From 2005 to 2022, more accurate diagnostics became possible. A specially designed OBD2 port allows you to connect equipment to the car. An external computer shows problems down to every detail.
Symptoms of P0132?
It is worth noting that the second/rear oxygen sensor has nothing to do with fuel regulation and is only used to check the operation of the catalyst.
Problems with the fuel mixture, such as those caused by fuel pressure or cylinder misfires, can interfere with the oxygen sensor readings. It is even possible that errors may occur in the catalyst and the second O2 sensor, but this will not lead to errors associated with the measurement circuits.
In most cases, since the catalytic converter is not critical to engine performance and is simply an emissions control device, you won't notice anything other than a Check Engine Light (MIL).
Decoding fault codes VAZ 2115 8 valves
Depending on the type of device, certain symbols and numbers are displayed on the dashboard, indicating the presence of an error. In self-diagnosis mode, the data is reflected on the instrument panel in the square of the on-board display. A one or two-digit number indicating the problem is indicated here.
If diagnostics are performed by a third-party device, error codes are displayed on the computer display and are represented by an alphanumeric code consisting of 5 characters, where the first indicates the area of failure. The second sign indicates the factory code, the third specifies the problem circuit. The last 2 digits indicate the problem itself.
The complete table of faults for the VAZ 2115 contains more than a thousand names and encodings. The following are only the most common problems.
Error 01
The microprocessor has failed. There is a firmware glitch. Repair consists of replacing or reconfiguring the module.
Error code 2
The fuel level sensor in the tank is damaged or stuck. Disassemble the system and inspect the sensor for damage.
Fault 3
It is a combination of errors No. 2 and 1. Troubleshooting is indicated above.
Breakdown 4
Excessively high voltage in the network. The reason lies in a short circuit in the line.
Error 8: Lada 2115 8 valves
The problem arises when the car has an injector. The causes and elimination of the malfunction are completely opposite to point number 4. Here we are talking about a critical voltage drop in the on-board network, which is caused by battery failure or damage to the generator set.
Error 10
This means that when the engine is under high load, a lean fuel mixture enters the engine. The behavior causes a malfunction of the injector or throttle valve.
Breakdown 11
Indicates the presence of two or more problems at the same time. The number is obtained by adding the codes 8 and 3.
Fault 12
The check engine light is damaged or there is a problem with its wiring. It can be eliminated by studying the entire highway followed by repairs.
Error 14
The coolant temperature sensor is faulty or not working correctly. The situation can only be corrected by completely replacing the part - the sensor cannot be repaired.
Error 19: what needs to be changed
DPKV does not work correctly or there are problems with the marks matching. There are 2 fix options.
Error 20: decryption
Represents a combination of several errors at the same time. To understand the essence of the problem, perform detailed computer diagnostics.
Breakdown 26
A combination of three or more problems. The machine displays something like this when there are a lot of breakdowns.
Fault 44
The fuel mixture is too lean at low load or idle. Check the fuel lines for stray air leaks.
Code P0036
The low speed controller is faulty. A complete diagnostic of the module is required.
Error codes 0038
The last problem on the list, which is a combination of several faults. It is required to carry out computer diagnostics of the circuit.
Error P0171
Indicates that the fuel mixture is too lean. This often happens when a car uses gas as fuel.
Regardless of the type of fuel, check for parasitic air leaks through the connections of the lines and the walls of the pipes. It is also a good idea to diagnose the mixture formation module.
Malfunction P0172
The opposite problem is associated with a lack of air in the mixture. Diagnose the air line, replace the filter and examine the working surface of the MAF sensor in detail for damage or contamination.
Error P0030
The problem often occurs due to the poor condition of domestic roads. The essence of the breakdown is a break in the oxygen sensor circuit to the converter.
The solution is to check the entire wiring line and repair the break.
Breakdown 0102
Indicates a break in the signal from the mass air flow sensor. Can be signaled on the display as 102.
You will need to carefully check the wiring for damage to the insulation or oxidation of the sensor contacts.
Code 0113
Code P0113 indicates problems with the external thermometer. As a solution, it is proposed to shake the line and check for good contact.
Error 0118 to 2115
Indicates problems with the sensor. Now this is DTOZH. The root of the problem and the solution are similar to the points mentioned above.
Error 0122
TPS – violation of the insulating layer of the wiring. The cable may be frayed and shorted to ground.
Code 0132
DK1 breakdown. The solution to the problem is similar.
Malfunction P0134
The first oxygen sensor is a break in the power line. This results in no signal from the sensor.
P0135 error
Indicates an open circuit in DK1 with contact with vehicle ground.
2115: misfire in cylinders 1 and 2 - error 300 301 302
They talk about multiple misfires in individual cylinders. If error P0300 is displayed on the device, such faults are relevant for all working chambers.
Fault 0326
The DDS module is damaged or its contact groups have oxidized. Troubleshooting involves cleaning the terminals from dirt and oxides.
Code 0328
No signal from the above sensor. The entire line needs to be checked.
Code 0335
The crankshaft position sensor is damaged. Error 335 often indicates a mechanical failure.
Code 0336
There is a break in the line of the above sensor.
Fault 0340
DPRV – loss of connection with the head module.
0341 - error
Damage to the camshaft position sensor. The entire sensor needs to be replaced.
Error 0342
A similar fault with a short to the on-board network.
Error 0343
Phase distribution sensor - violation of wiring integrity. Disassemble the circuit and restore the insulation.
0346 - breakdown
Similar problem - no different solution.
Error P0351
Open circuit for the first piston.
Breakdown 0363
Indicates that the fuel mixture does not ignite in the cylinders. There was a forced cut-off of fuel. To repair your car, you will have to turn to specialists for help - self-repair is unlikely.
Code 0422
Indicates a critical reduction in the performance of the catalytic converter. After diagnostics, the entire module is replaced or a flame arrester is installed instead.
Code 0441
The canister purge valve receives power intermittently. Check the power line.
Error 444
Complete loss of voltage in a similar section of wiring.
501 - error
The speedometer sensor is transmitting incorrect information. Please study the module carefully.
Fault 0560
The battery is damaged or deeply discharged. The problem indicates a break in the main line of the car.
Error p0504
Speedometer sensor – wiring damage with contact to ground.
Code P0507
Idle speed too high. The cause is a dirty throttle valve.
Code 0511
The idle air control power lines are damaged.
Code P1602
There was a contact break in the car's on-board vehicle. The code appears simultaneously with other ciphers that clarify the location of the defect.
Breakdown 1621
RAM error. The module must be examined in detail for any malfunction.
Error 2187
The fuel system is too lean at idle. The reason lies in the depressurization of the fuel line. For repairs, it is enough to tighten the connections and replace worn hoses.
Engine errors
Sensors on the motor can produce up to 500 different errors. These are problems with ignition, fuel supply and sensors.
RAM error on 2115
They start with code P0300 and indicate that there are problems in the controller.
Error - rich mixture
Troubleshooting begins with checking the fuel line for integrity. If everything is in order here, examine the throttle valve and injector.
Phase sensor fault: 2115 8 valves
The phase distribution sensor is sensitive to mechanical damage and shaking, which leads to sudden failures or incorrect operation.
Knock sensor 2115 8 valve injector: signs of malfunction
If a breakdown occurs, the engine begins to operate intermittently. The power plant does not maintain speed, an error may appear indicating a forced reduction in engine power.
Crankshaft sensor 2115: signs of malfunction
DPKV rarely fails. If a malfunction occurs, misfires are possible, and sometimes the engine malfunctions and fails while driving. The motor will triple or double.
Camshaft sensor 2115: signs of malfunction
Problems when the DPRV breaks down are similar to those mentioned above.
Fault 1602
Most often, car enthusiasts encounter the P1602 encoding. It means problems in the electrical circuit of the vehicle. This error may be associated with the computer, broken wiring, or a malfunction of the computer itself.
The vehicle condition monitoring system constantly tests the battery, so often on a frosty morning the owner of a VAZ-2115 may encounter an unpleasant surprise on the display in the form of an error. With it, the car simply will not start. If you often encounter problems with P1602, then it makes sense to try to fix the problem by changing the firmware. Remember that you should only use official versions.
However, although the above situation occurs frequently, it is not the only reason for the indicated code to appear on the display. It is worth checking the car for the following problems:
- low voltage in the network (additionally, the sensors may also respond with errors);
- dead battery (in this case, the functions of the VAZ-2115 are blocked);
- short circuits in the wiring or broken wires in one of the sections of the circuit;
- increased load on the electrical circuit (occurs when installing powerful speakers and a subwoofer);
- problems with the generator, in which it produces insufficient current, which leads to constant use of the battery;
- failure of power grid measuring sensors.
Often the failure of various sensors leads to the fact that when you try to start the engine, the computer issues a dozen different codes. A malfunction in the operation of the on-board system itself also manifests itself. Moreover, in some cases, the car may simply not start, since errors do not simply transmit information, but prevent the engine from starting.
The best way to protect against the appearance of unnecessary codes is to change the on-board electronics software. However, it is important to use only official versions. Poor-quality firmware can easily destroy the entire electrical system of the VAZ-2115. It can send strange commands to all controllers at once.
How to reset errors on a 2115 injector yourself, without a computer
To reset dashboard codes, drivers use 2 methods.
In the first option, faults can be eliminated by disconnecting the power terminals from the battery. The circuit is opened for 15 minutes and put back together. After this, the bookmaker will restart and information about problems will be updated.
You can also perform a reset using third-party equipment, but this is relevant for service stations and service stations.
It’s easy to count Lada 2115 errors yourself. The disadvantage of the procedure is the impossibility of accurately determining the exact location of the breakdown. For detailed diagnostics, it is recommended to use special equipment.
Specialization : Graduated from the State Automobile University, worked for 20 years at GAZ-56, now I drive a Zhiguli.
Source
Removing the error from the device memory
This procedure is used in three cases:
- the occurrence of an error blocks the ability to operate the car (you need to get to the service station under your own power);
- a complete check of all components was carried out and no fault was found;
- The damaged part has been repaired or replaced.
To reset the on-board control system data, you must remove all terminals from the battery and then plug it back into the vehicle's power circuit. It will only take a few seconds to disconnect the battery. After this, the error record will be erased from the system memory. If you want to carry out this procedure for further operation of the vehicle, then remember that the trip should be short - to the nearest car service center.
Diagnostics
There are two ways to set error codes for VAZ 2114 injector 8 valves. However, each method has unique advantages and disadvantages.
Self-diagnosis of VAZ 2114: error codes and their interpretation
The self-diagnosis method does not require the driver to have complex instruments or additional units. To complete the procedure, the car itself is enough.
The standard sequence of actions looks like this.
If the sequence of actions is performed correctly, all indicators will light up and the display will show a two-digit fault code.
Note!
A failure signal may be a lack of response from the indicator. In this case, it is necessary to check the circuit coming from the device.
The most common error codes for the VAZ 2114 panel, occurring in 90% of cases:
In some cases, errors may overlap each other if the breakdown is similar. For example, if errors 1 and 4 intersect, the panel will indicate "5".
It is important to know that after viewing, VAZ 2114/2115 error codes do not disappear on their own after repairs are performed. They need to be forced reset. To complete the work you will need a simple sequence of actions:
This also needs to be done if you are planning a trip to a service station. Having discovered the instructions from the on-board computer, the technicians will correct these problems, which will definitely be more expensive.
The disadvantages of an independent procedure include the low accuracy of the data. On-board diagnostics only show the general direction vector where the fault should be looked for.
Check using diagnostic equipment
You can identify error codes for VAZ 2115 and 2114 using a laptop with a special program. The tool is connected to the vehicle's test socket through a set of adapters. The wizard configures the software, and after diagnostics, one or more faults will be displayed on the computer screen in the form of a five-digit code.
The first part is the letter:
The second part is a single digit:
The next element is the breakdown group indicator:
The final two numbers point directly to the problem itself.
Diagnostics using special equipment
1. Diagnostic connector
2. Connecting a wire with an adapter to the diagnostic socket
3. Connecting the wire to the computer
4. Launching software for testing
The diagnostic process using special equipment consists of checking the car using a laptop. To connect to the diagnostic connector you will need a cable with an adapter. Using this cable, we connect the computer to the connector via USB output. For testing you will also need software; the power of the computer used is not important. There are many versions of different testing programs on the Internet.
Diagnostics is performed as follows:
- It is recommended to inspect the vehicle before starting the inspection. Check the volume of consumables - engine oil, brake fluid, coolant.
- Find the diagnostic connector and connect your laptop to it. If you have a special scanner, then that's even better. But since finding a scanner is not so easy, and buying one is not cheap, you can use a laptop. Before testing can begin, the ignition must be activated. There is no need to start the power unit.
- After connection, the testing utility starts. The software interface may vary. When you launch the software, graphs or a list of parameters with numbers may appear. This information will allow you to draw conclusions about the operation of the power unit.
- The scan starts. Fault codes will appear on the laptop screen. To decrypt, use the information provided in this article. We could not describe all the codes, but we deciphered those that occur most often. Usually, when downloading a program to a computer, users are provided with a separate file describing the faults.
- After decryption, the problem is repaired.
Basic error codes for VAZ 2114 injector: decoding
Note!
The table is also relevant for version 2115.
Exhaust system – 0000
Air line defects – 0100
Error codes VAZ 2114 1.6 liters related to fuel supply - 0200
Error codes on the VAZ 2114 on-board computer indicating a breakdown in the ignition system - 0300
Additional attachment that does not have a direct effect on the motor – 0400
Failure, malfunctions in the SU speed control system – 0500
On-board network of auxiliary or main equipment – 0600
Auxiliary systems – 1000
Important!
Only the most popular error codes for the dashboard of the VAZ 2114 and similar models are listed here. There are other indices, but due to their low prevalence they are not mentioned.
Problems and encodings do not match
Sometimes error codes indicate known working components. This is a big problem for VAZ-2115 owners, so we will give examples of why this could be:
- the sensors themselves failed, not the units;
- low-quality fuel was poured into the tank (often leading to the occurrence of combination P0300);
- clogged fuel and air filters need to be replaced;
- changes in the subtleties of engine operation due to the use of unauthorized software for the on-board computer;
- replacement of parts with non-conforming ones;
- failure of the computer diagnostic system.
If you do not have the necessary firmware to operate gas equipment, you will not be able to use the car at all. The computer will block it. It is interesting that the VAZ-2115 power unit is capable of digesting any gasoline, but its sensors are more sensitive to the quality of the fuel. Perhaps the manufacturer was in a hurry when installing a modern system on the “fifteenth”. Reviews from most motorists say exactly this.
Table with errors
A complete list of faults with explanations and recommendations for troubleshooting:
Engine malfunctions
Possible causes of the problem:
- regular use of low-quality fuel;
- violation of air intake tightness;
- lack of spark;
- damage or physical wear of cylindrical devices.
If replacing the fuel does not help, it is necessary to diagnose the air intake system. You should tighten the fastening clamps, change the air filter element and check the pressure in the rail (the normalized value is no more than 2.8 atm).
It is also necessary to perform diagnostics:
- high-voltage wires connected to the defective cylinder;
- spark plugs;
- check for possible oxidation at the cable connection points.
Diagnostics of high-voltage wires is carried out using a tester; it is necessary to check the resistance. If the obtained value is more than 10 kOhm, then the cables must be replaced. You also need to check the integrity of the spark plugs and make sure there is no carbon deposits on their tips.
Possible causes of the problem:
- breakdown of the mass air flow sensor;
- lean or enriched air-fuel mixture in the engine cylinders;
- malfunction of the electronic engine control system unit.
To fix the problem, you can try to relearn the throttle valve, to do this, perform the following steps:
Possible solutions to the problem:
Electrical faults
When this combination appears, the following problems are possible:
Possible signs of problems:
- the car engine does not start or stalls for no reason;
- fuel consumption increased;
- electronic devices and mechanisms do not work correctly;
- the power of the power unit is lost, etc.
If you do not have the appropriate equipment and skills, you can follow these steps to resolve:
Composite Combinations
Decoding of VAZ error codes is presented for the following models:
- 1118 Kalina (Kalina);
- 2104;
- 21041;
- 2105;
- 2107;
- 21074;
- 2109;
- 21093;
- 21099;
- 2110;
- 21102;
- 21103;
- 2111;
- 2112;
- 2113;
- 2114;
- 21114;
- 21124;
- 2115 with engine injector 8 and 16 valves;
- 21150;
- 21154;
- 2131;
- 2170 Priora (Priora);
- 2190 Granta (Grant);
- 2123, 21214, 2131 Niva (Niva);
Indications for self-diagnosis and contacting specialized service stations will be different, error codes are also displayed differently. Therefore, today we will consider two options.
It is not at all necessary to use the on-board computer to diagnose problems with the car. Not all VAZ 2114 owners know about this method, so we will definitely tell you about it.
It consists of the following steps.
- Sit in the driver's seat and hold down the odometer button.
- Then turn the ignition key to the first position.
- Release the odometer button. After this, the arrows will start moving.
- Press the button again and turn it off. This will allow you to see which firmware version is used in your case.
- Press and release the button a third time. So you will see codes indicating the presence of certain errors in the operation of the car.
Let's now look at the most popular errors that occur during such diagnostics and figure out what the code means. Even without an on-board computer, you can detect faults on the VAZ 2114 using the odometer codes.
We suggest you familiarize yourself with them in the table.
| Code | Description |
| 1 | Problems with the microprocessor |
| 2 | There are problems in the fuel level indicator sensor circuit in the tank. |
| 4 | The power supply voltage is too high |
| 8 | Voltage too low |
| 13 | There is no signal from the oxygen sensor |
| 14 | Coolant temperature sensor signal level is very high |
| 15 | Coolant temperature sensor signal level is very low |
| 16 | The voltage in the on-board network is too high |
| 17 | Very low voltage in the on-board network |
| 19 | The crankshaft position sensor is sending an incorrect signal. |
| 24 | Vehicle speed sensor is faulty |
| 41 | Phase sensor sends incorrect signals |
| 51 | Problems detected with the persistent storage device |
| 52 | Problems detected with the random access memory device |
| 53 | CO potentiometer does not work |
| 61 | Lambda probe sensor does not work |
Plus, all fault codes will be stored in memory until you manually reset them. To do this, you need to disconnect the terminals from the battery while keeping the ignition on, wait a few seconds and connect it back. Don’t forget to do this, especially if you are going to go to a service station for diagnostics. They will find these errors and will eliminate them, although in fact you have already done everything yourself before. Pay extra money? No, it's not worth it.
