Error codes VAZ 2107 injector 8 valves decoding

Table with errors

A complete list of faults with explanations and recommendations for troubleshooting:

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);

Self-diagnosis of VAZ 2107 injector with your own hands

Installing an injector in the VAZ 2107 made it possible to significantly improve engine performance. Changing the type of fuel system increases the amount of energy that is produced during the combustion of gasoline. Compared to a carburetor engine, a fuel injection system is more efficient in the initial stages, but over time its performance decreases. What does this depend on?

VAZ 2107 injector plays the role of the final element in the fuel system of the car. The air mixture, together with a cloud of atomized gasoline, creates a huge amount of energy. Over time, this atomization may become less effective, the fuel jets will become weaker, and all due to low-quality gasoline.

The main cause of injector failure is poor fuel. Car fuel consists of many chemical components; in addition, various impurities are added to it, which should improve the overall performance of the engine. This factor cannot be ignored, since such gasoline leaves sediment on the walls of the fuel system. The thinnest channels are in the injectors, and it is these devices that suffer first. VAZ 21074 injector has the same problem. During operation, deposits from fuel only accumulate. What needs to be done to stop this?

How to diagnose the error?

It is important to know

There are two options for diagnosing a VAZ car - testing using the instrument panel and using a computer. The second option is considered more accurate, but its implementation will require a special program and a cable for connecting to the diagnostic connector.

Checking using a computer is done like this:

1. The diagnostic wire is connected to the laptop. Its second end must be connected to the OBD2 connector in the Lada car. The location of this block differs depending on the car model; this nuance must be clarified in the service manual.
2. A diagnostic program is launched on the computer, which allows you to decipher error codes. To start the test, press the corresponding button.
3. The diagnostic process begins. Depending on the utility, the program can separately check the operation of the engine, transmission or electronics.
4. After the test is completed, combinations of faults will appear on the computer screen that need to be deciphered. Depending on the program, a description of the error may also be displayed immediately.

Diagnostics using the dashboard is performed as follows:

1. The car owner sits in the driver's seat and presses the daily mileage reset button on the odometer.
2. The key is inserted into the lock and scrolled to the “ACC” position.
3. The daily mileage reset button is released. The arrows on the speedometer, tachometer, and sensors will begin to quickly move from the minimum position to the maximum.
4. The odometer key is pressed and released. An inscription with the software version will be displayed on the instrument cluster screen.
5. After the third press of the odometer key, combinations of faults will appear on the screen.

Video: diagnosing a VAZ using the dashboard

The CarFance channel in its video showed in detail the process of testing a Lada car using a control combination.

On-board computer VAZ 2107

An on-board computer is a “smart” digital device that performs certain calculation operations by receiving data from various sensors. That is, the “on-board vehicle” is a device that collects all the necessary information about the “well-being” of the car’s systems and converts it into signs that the driver can understand.

Today, two types of on-board computers are installed on cars of all types:

What kind of ECU is on the VAZ 2107

Initially, the VAZ 2107 was not equipped with on-board devices, so drivers were deprived of the opportunity to obtain operational data on the state of the vehicle systems. However, later versions of the “Seven” with an injection engine are already conducive to installing this device.

Factory models of the VAZ 2107 (injector) were not equipped with an ECU, but had a special socket for the device and connection capabilities.

The injection model of the “seven” has a variety of different electronic components. Any driver knows that sooner or later one of these components may begin to malfunction or fail. At the same time, self-diagnosis of a breakdown in such cases is very difficult - again due to the complexity of the electronic systems of the VAZ 2107. And installing even a standard ECU model will allow you to receive data on breakdowns in a timely manner and quickly fix faults yourself.

Thus, on the VAZ 2107 you can install any standard on-board computer that is suitable in design and connectors:

Main functions of the ECU for VAZ 2107

Any on-board computer installed on a VAZ 2107 must perform the following functions:

Any ECU has a screen and indicators that are inserted into the center console inside the car. On the screen, the driver sees a display of the current performance indicators of the machine and can control certain components.

The on-board computer on the VAZ 2107 is located immediately behind the instrument panel, connecting to the car’s sensors. The screen or indicators are displayed directly on the dashboard for driver convenience.

How to reset the error?

Good to know

You can delete the error code from the memory of the VAZ control unit by disconnecting the terminal from the battery.

The reset procedure is performed as follows:

1. The vehicle's ignition system is activated, but the power unit does not start.
2. The engine compartment of the vehicle opens. Using a wrench, loosen the screw that secures the terminal clamp on the negative output of the battery.
3. After about one minute the contact is reconnected.
4. The engine compartment of the car is closed, the ignition system in the car is turned off.
5. The car engine is starting. If the “Check” indicator remains lit on the dashboard, it should disappear on its own after a few kilometers.

ECU firmware

Firmware update of the electronic control unit is an opportunity to expand the capabilities of your on-board vehicle and make its operation more efficient. It must be said that the first versions of programs for firmware (or chip tuning) of the VAZ 2107 appeared back in 2008.

For most G7 owners, software chip tuning is simply necessary, since this operation allows:

ECU firmware must be performed exclusively at a service center and after a complete technical inspection of the motor by specialists. Special service equipment is provided for this procedure. Self-firmware can only be performed if you have experience and modern equipment.

Video: how to flash the ECU on a VAZ 2107 yourself

The VAZ 2107 ECU can be considered a device that will allow you to quickly monitor the operation of all vehicle systems and troubleshoot problems in a timely manner. Of course, there is no particular need to install an on-board vehicle on your car: the “seven” already quite satisfactorily fulfills all the obligations assigned to it. However, the ECU helps the driver to notice malfunctions and wear of mechanisms in time and quickly respond to them.

The cost of diagnosing errors for VAZ at service stations in Moscow and St. Petersburg

Approximate prices for computer diagnostics:

Correction of internal control programs (chip tuning)

Chip tuning

Chip tuning, like ECM modification, also involves changing the factory settings of the software in order to eliminate certain errors in the operation of the software. But the ultimate goal of chip tuning is somewhat different, and is to significantly increase torque and obtain maximum performance from the engine.

The cost that a car owner has to pay to obtain additional power is quite high. Often, as a result of chip tuning, fuel consumption increases significantly and the life of the internal combustion engine decreases.

Taking into account the above information, every car owner should know the answer to two questions before adjusting the injector:

Basic engine malfunctions

VAZ 2107 cars are equipped with three main types of power units with a displacement of 1.5, 1.6 and 1.7 liters. The second engine is equipped with a distributed injection system, which differs significantly from carburetor engines. During long-term operation, parts and components of the unit are subject to wear, which can cause the following malfunctions:

Diagnosis of injector or ECU malfunctions is carried out using a special tester, which is available at specialized service stations. Repair and restoration work on the engine is classified as complex and requires high qualifications and special skills.

ECU firmware

Firmware update of the electronic control unit is an opportunity to expand the capabilities of your on-board vehicle and make its operation more efficient. It must be said that the first versions of programs for firmware (or chip tuning) of the VAZ 2107 appeared back in 2008.

For most G7 owners, software chip tuning is simply necessary, since this operation allows:

ECU firmware must be performed exclusively at a service center and after a complete technical inspection of the motor by specialists. Special service equipment is provided for this procedure. Self-firmware can only be performed if you have experience and modern equipment.

Video: how to flash the ECU on a VAZ 2107 yourself

The VAZ 2107 ECU can be considered a device that will allow you to quickly monitor the operation of all vehicle systems and troubleshoot problems in a timely manner. Of course, there is no particular need to install an on-board vehicle on your car: the “seven” already quite satisfactorily fulfills all the obligations assigned to it. However, the ECU helps the driver to notice malfunctions and wear of mechanisms in time and quickly respond to them.

Cleaning and preventing plaque in the system

The injector device is very sensitive to large inclusions in gasoline. If you are using a cheap brand of fuel, be prepared to change your injectors soon. So the first thing you should do for your VAZ fuel pump is change the brand of fuel. The power supply system of the VAZ 2107 should become cleaner; the possibility of plaque formation in the system is still not excluded. Since the flammable liquid in the channels occasionally stagnates and sometimes even freezes, an early breakdown can be prevented only in one way - regular cleaning.

Approximately every 35-40 thousand km it is necessary to carry out preventive cleaning work on the fuel system. You need to wash the channels with your own hands. The performance of the engine will depend on the quality of cleaning. If this procedure is carried out irregularly, then soon you can say goodbye to one injector and look for a new one, and then you will have to change the remaining elements of the VAZ fuel pump.

In 4-cylinder types of injection engines, different intensities of injector clogging are observed. The temperature in the area of ​​cylinders 2 and 3 is always elevated, so sediment accumulation occurs there faster.

A special admixture of polyetheramine is considered a prophylactic agent in such cases. It prevents the accumulation of burning for a long time.

Damage diagnostics

How to understand that an injector needs to be replaced, checked or repaired? Even without sensors, you can understand that repair of fuel system elements is required if there are 1 of 2 main signs in models 2107, 21074:

Sometimes it is impossible to determine on your own where the damage is, and only then will diagnostics at service centers come in handy. A blockage can cause quite serious damage to the VAZ 2107 injector, as well as rupture of channels. The pressure that arises inside the system can easily destroy the most fragile parts. Here you won’t be able to fix the situation with your own hands, even if you have a complete diagram of the car at hand. There is only one conclusion - you need to devote a lot of time and attention to cleaning injectors and do it regularly.

Where is the diagnostic connector located?

The type of device in question, which is also called a diagnostic block, in the design of the 7 and other cars serves to check the condition of the vehicle for errors and malfunctions. After such manipulation, you can decide on the need to repair or replace parts and mechanisms.

Structurally, the connector is a contact connection with a large number of pins. An autonomous source (computer) is connected to this connection, and a test event is carried out using special programs. On the seven, the diagnostic connector is located in the passenger compartment on the passenger side under the glove compartment. By the way, on many car models of domestic and foreign production, the connector is also located in this place.

To connect the computer to the car via the connection, you do not need to disassemble, remove or unscrew anything. The check can be carried out while inside the car, since the essence of this process is to identify errors in the operation of the engine.