Error 4 viburnum 8 valves what does it mean. Diagnostics and decoding of codes on the Lada Kalina

For the third day now the check light is on, it shows error “4”, I reset it, then reset the terminal, but it didn’t help, it’s still on

According to the service manual, error number 4 in the control unit indicates a malfunction of the coolant temperature sensor. According to reports from members of our community and according to motorists, this error is quite common and appears often on the Lada Kalina. It’s worth figuring out why errors pop up and how to fix the problem.

To start the diagnostic process, you will need to press a button that records the daily mileage. While holding it, turn on the ignition by turning the appropriate key. If this manipulation is performed correctly, the arrows on the scales of the speedometer, tachometer and auxiliary indicators will begin to move along a circular path, moving from the initial to the final position.

How to see if there are errors in Kalina's work

The launch of self-diagnosis of the Lada Kalina is carried out according to the same principles as on other cars of the VAZ family. The process has only minor differences:

Turn the ignition key to position 1, then press the daily mileage reset button (located in the lower right corner). After this, you will see the movement of all the arrows on the panel.
Then press the button located on the wiper control handle. After this, symbols will appear on the on-board computer display.
Press again to display the ECU software version.
You need to press the handle button again. This will help display a list of errors that the computer detected during self-diagnosis.

After this, all you have to do is evaluate the information and conduct more detailed diagnostics of the car.

Video “Do-it-yourself diagnostics of a Kalina car”

To learn how to properly perform computer diagnostics at home, watch the video.

VAZ Lada Kalina is equipped with a standard computer immediately at the enterprise. Moreover, it is a high-quality brand, has wide functionality, and can satisfy many car drivers. But for those who want more, it is recommended to purchase a device with serious functionality, for example, the Gamma on-board computer.

It has much more functionality compared to a standard computer. It displays and resets fault codes, and at the same time makes diagnostics. It is launched on the dashboard by pressing a key to reset the daily mileage, and at the same time turning on the ignition. After pressing the key, the firmware version of the on-board computer (BC) and error codes, if any, will be shown on the computer screen.

What does error 4 mean on Lada Kalina

If error 4 appears on the on-board computer screen, then it can be deciphered as follows: the coolant temperature sensor is not working correctly. He didn’t respond for 30 seconds, so the computer decided that there was a break in his power circuit or that he himself had failed. Many Lada Kalina owners claim that this error appears very often, especially at sub-zero temperatures outside, so they do not react to it and do not consider it critical.

But you shouldn’t do this, because if you attribute everything to a habitual failure, you may miss a serious car malfunction. Error 4 indicates:

failure of the antifreeze temperature controller;
open circuit in the power supply between the computer and the sensor;
error in the control unit system after an impact or other impact;
plaque on the sensor, resulting in loss of contact with it.

Any of these reasons for the failure can be eliminated with your own hands, but to do this you need to know how to check the sensor and how to replace it.

Decoding combinations

Below we will look at deciphering error codes. We do not consider all codes: we list only the most common combinations that indicate a failure.

Self-diagnosis

So, what codes can be seen during self-diagnosis.

Code	Decoding error
2	Code 2 indicates overvoltage in the vehicle's on-board network.
3	This code indicates a faulty fuel level sensor in the fuel tank. Possible circuit break.
4	If this code appears, the car owner should pay attention to the operation of the antifreeze temperature sensor. There is also the possibility of a circuit break.
5	The outside temperature sensor is faulty.
6	The control unit (CU) has detected engine overheating. It is recommended that you resolve this issue before using the vehicle any further.
7	Provides emergency lubricant pressure in the engine.
8	If you see this code on the instrument panel, you should check the serviceability of the brake system. The on-board computer has detected an error or malfunction in its operation.
9	The on-board computer reports that the battery charge level is too low. A more thorough battery check is recommended.
E	The error is reported in a data packet to the EEPROM.

How to check the sensor

Since the cause of error 4 on the Lada Kalina is not always the failure of the controller, you need to learn how to diagnose it. First of all, inspect the wiring; if there are no breaks in it, then you need to move on to checking the sensor itself. Follow the instructions:

Turn off the ignition and disconnect the wire connector from the coolant sensor. For the convenience of motorists, the block is marked “AB”.
Place the probes of the electronic tester on contact B of this block and on engine ground. If the power circuit is not broken, the tester will show a voltage of 4.8 to 5.2 V. Otherwise, you need to check the power circuit.
If the device shows sufficient voltage in the circuit, then you need to check the controller itself. To do this, place the tester probes on contact A and engine ground. Switch it to resistance measurement mode. If the circuit is grounded, the device will show a resistance of less than 1 ohm.
The following measurements should be carried out on a warm and slightly cooled engine. The probes of the device are placed on the contacts of the sensor itself to measure its resistance. It is also important to know the temperature of the coolant; the hotter it is, the lower the resistance should be. The maximum resistance is achieved at negative temperatures, and at 100 degrees it is minimal - 180 Ohms.

If the sensor does not pass the warm-up test, it must be replaced. There are more complex ways to check the sensor, but to do this you will have to unscrew it and test it.

Broken fuel tank seal, catalytic converter failure

If the seal of the fuel system is broken, air begins to flow into it.
Additional fuel consumption appears.
Air in the fuel system causes engine problems.
The check engine light comes on on the dashboard.

What to do if the catalyst fails? A car catalyst is needed to neutralize exhaust gases. The oxide contained in exhaust contains many substances that are harmful to the environment. The catalyst reduces the damage that a running vehicle causes to the environment.

One of the reasons for catalyst failure is a breakdown of the oxygen sensor. Old spark plugs can cause catalytic converter failure. You should not take this problem lightly. If the oxygen sensor or spark plugs malfunction, the process of neutralizing exhaust gases is disrupted.

The cost of a new catalyst is quite high, but still cheaper than engine repair. There is one more problem. You are unlikely to be able to replace the catalyst on Kalina yourself, so you need to go to a service center. To avoid this, you should regularly change the oxygen sensors and spark plugs.

If the mass air flow sensor fails, the car begins to consume more fuel. There is a greater emission of carbon monoxide, engine power and the smoothness of the vehicle are reduced. If there is weak dynamics during acceleration, then it makes sense to assume that the sensor is faulty. As a rule, in cold weather the car begins to have trouble starting.

How to replace the coolant sensor

To work on removing the coolant temperature sensor, you need to remove at least part of the antifreeze from the system. The easiest way is to drain it from the radiator, but you will have to unscrew the plug on the cylinder block, since the sensor is located not far from this unit. Let's figure out how to drain the liquid from the system completely:

Remove the negative terminal of the battery. Remove the middle mudguard in the engine compartment.
Close the cap of the expansion tank tightly, place a container with a volume of at least 6 liters under the hole in the radiator, and remove the plug. To make the fluid drain faster, unscrew the cap on the expansion tank.
To remove antifreeze from the cylinder block, you must additionally unscrew the plug on it. The exact instructions will depend on the number of valves in the engine. If your Kalina has an eight-valve system with a traction drive gearbox, then you need to find the drain hole under the ignition coil on the front side of the cylinder block. After this, place the container under it and remove the stopper. After this, all you have to do is unscrew the sensor, having first disconnected the block with wires from it.

Broken fuel tank seal, catalytic converter failure

If the check persists on the dashboard, the car owner will look for a problem with the engine. But the reason may be different. The check engine light may come on due to problems with the tightness of the fuel system. The fuel filler cap may not be securely closed. Why does this problem occur? The reasons may be the following.

If the seal of the fuel system is broken, air begins to flow into it.
Additional fuel consumption appears.
Air in the fuel system causes engine problems.
The check engine light comes on on the dashboard.

How to fix the problem? If the check engine light is on and there are no signs of loss of power, knocking, humming or squeaking, then you need to check how tightly the gas tank is sealed. Sometimes, in a hurry, the driver simply forgets to close the lid tightly, or cracks begin to appear on it. If you have fixed the problem, but the check continues to light, then this is not the reason.

If the check light is on due to a faulty catalyst, you will notice that the engine power has dropped significantly. The car loses acceleration dynamics. What is the reason for catalyst failure? Regular technical inspection of the vehicle will ensure that such a malfunction does not occur.

As a result, carbon monoxide begins to accumulate in the catalyst, it overheats and may burst. You cannot drive a car with a faulty catalyst. This will lead to improper operation of the engine, which is why the check light will light up. The car will consume more fuel and the engine will not produce traction.

The mass air flow sensor monitors air consumption. If the engine malfunction light comes on, you need to check the sensor. It monitors the amount of air required to ignite gasoline. Information from the sensor enters the on-board computer.

Why does the mass air flow sensor fail? One of the reasons for the failure of this device is incorrect installation of the air filter during its scheduled replacement. Like many consumables, the air sensor needs to be replaced regularly. It is important to change the air filter in a timely manner.

A sensor malfunction has little effect on engine performance. You can drive for some time with a faulty sensor. But this will lead to increased fuel consumption. The cost of a new sensor for Kalina is not very high, and you can do the replacement yourself. If necessary, the sensor can be replaced in service, during a routine inspection.

Error 4 came on on the Lada Kalina on-board computer, how to fix it?

According to the service manual, error number 4 in the control unit indicates a malfunction of the coolant temperature sensor. According to reports from members of our community and according to motorists, this error is quite common and appears often on the Lada Kalina. It’s worth figuring out why errors pop up and how to fix the problem.

conclusions

It turned out that finding and eliminating the cause of error 4 in Lada Kalina is quite simple. Although deciphering error codes requires specialized knowledge, you can find the necessary information in this article.

The Lada Kalina car is equipped with an on-board computer that allows you to quickly diagnose any problems that may arise. Thanks to the control unit, you can find out about car breakdowns thanks to the read codes. In this article we will tell you what the most common Kalina error codes are and how to diagnose it yourself.

Causes of 4 errors

Error 4 came on on the on-board computer screen ( marked with a red arrow )

There are several reasons why error 4 appears in the ECU. Let's consider all possible options:

The coolant temperature sensor has failed.

In the process of replacing and repairing the coolant sensor on Kalina

Checking the wiring and voltage supply to the sensor

All of these reasons are fairly easy to fix and are not a cause for serious concern.

How to view errors on the on-board computer?

The video shows the “self-diagnosis mode” of the Lada Kalina car, in which you can find out if there are any errors:

Elimination methods

In order to eliminate the cause of error 4 in the Kalina ECU, you should perform the following operations:

Check the sensor for functionality. If it “died”, then it should be replaced.
Check if there is contact and if there is any plaque. Clean the seat and replace the sensor.
Check the on-board circuit and make sure there is contact in it.
But a random error will have to be treated only by flashing the ECU and resetting all errors. To do this, it is recommended to contact a car service.

Thus, you can solve the problem yourself, but as practice shows, this does not always work out. Error 4 occurs quite often in the cold season, when the car is parked in the fresh air for a long time, and not in the garage.

Vehicle diagnostics and troubleshooting

If you nevertheless decide to buy a used car, then you should definitely make a diagnosis, paying attention to any Lada error codes that appear on the device display. Information about existing errors will be very useful, be sure to pay special attention to this. To diagnose and find out information, you should contact a car service center if there is no special insert on the used car you are buying.

In fact, such a procedure is a huge list of information that can tell about any possible danger. Usually this is not given importance, but in vain. For example, if a car’s BC states that the airbags are faulty, you definitely need to check this. Correction: what needs to be done? Immediately press the left button and the right one, from this press the on-board computer adjusts the selected parameter.

Then pressing the keys left or right changes the parameters. After pressing simultaneously, you exit from the adjustment. Reset. By pressing the left and right keys simultaneously, the options displayed on the screen will be reset. If everything is done in the “System error” mode, after that the error disappears. If faults actually exist, the error will remain in memory until reset occurs.

If the BC does not turn on, the causes of the problem are:

there is no electric current in the BC connectors;
there is no contact in the terminals.

BC cannot diagnose the reasons for this:

BC cannot calculate the speed of the car, the reasons for this problem are:

there is no contact in the connectors.

BC cannot calculate the remainder in the fuel tank, reasons:

devices do not have software compliance.

The BC incorrectly shows how much fuel is left in the tank, the reasons for this are:

there is no wire in the wiring at the 8th contact and the 9th terminal in the on-board computer;
The car panel is showing incorrectly.

There is no BC screen backlight, reasons:

I need to make the screen brighter.

The thermometer shows incorrectly, reasons:

the wire has broken in the temperature detection sensor;
incorrect contact with the on-board computer.

No voice accompaniment, reasons:

speaker is faulty;
the software has crashed;
The voice accompaniment is not reproduced (you must press the “up” key and hold it for more than three seconds).

BC writes incorrectly, the program has gone wrong, etc., reasons:

The on-board computer is not connected or there is no contact with it;
there is no contact in the connected battery terminal (the contact should be securely fixed).

Initialize the BC:

previous settings will be reset;
reset all parameters for the previous ride;
set the clock to 8 hours 00 minutes;
The alarm clock should be at zero, its notification is disabled.

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Replacement

Replacing the DVT is not a difficult job, but it requires basic skills in car repair. To carry out the work, it is necessary to drain the coolant, but some experienced mechanics change this part without draining; it is enough to prepare the necessary tools and wait for the engine to cool.

Step-by-step instructions for replacement with coolant drain

Remove the negative terminal of the battery;

Drain the coolant;

Remove the connector from the sensor;

Unscrew the sensor and install a new one;

We assemble in the reverse order;

Step-by-step instructions for replacing without draining the coolant

Removing the negative battery terminal

Preparing a new sensor

Remove the connector from the sensor

Unscrew the sensor and sharply plug the hole with your finger

We take the new sensor, bring it to the hole, remove the finger and insert the new sensor into the hole

It is clear that coolant losses are inevitable, but they are negligible if the entire operation is done quickly and thoroughly.

We hope our article was useful to you.