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

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:

1. 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.
2. Then press the button located on the wiper control handle. After this, symbols will appear on the on-board computer display.
3. Press again to display the ECU software version.
4. 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.

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:

1. Turn off the ignition and disconnect the wire connector from the coolant sensor. For the convenience of motorists, the block is marked “AB”.
2. 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.
3. 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.
4. 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.

Incorrect operation of the DTOZH. Guidelines for the driver.

The simplicity of the device guarantees its long service life. But sometimes it fails. If the sensor is broken, it must be replaced. This is a consumable item and cannot be repaired. However, the vast majority of failures are related to electrical circuit integrity. Breaks, waste contacts, rust and dirt are the main triggers for opening the circuit. It is precisely these problems that every car enthusiast can identify and fix himself.

The device does not break down instantly; shortly before “death” it sends distress signals, which the driver must be able to recognize. Among them:

Among the many reasons for device failure, we highlight the most important:

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:

1. Remove the negative terminal of the battery. Remove the middle mudguard in the engine compartment.
2. 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.
3. 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.

Replacing spark plugs and high-voltage wires

Spark plugs in a car are the main components for igniting the fuel mixture. If the spark plugs are faulty, the spark will not be supplied correctly to ignite the gasoline mixture. Faulty spark plugs often result in a lack of spark or an incorrect spark interval, which results in the engine not running properly. If the spark plugs do not work properly during acceleration, especially from a standstill, you may feel slight jolts.

What are the reasons for spark plug failure: Most spark plugs in cars produced before 1996 need to be changed every 25,000-30,000 kilometers. In newer cars, spark plugs last more than 150,000 km. However, these scheduled spark plug replacement intervals may be reduced by various factors related to fuel quality and driving style.

What needs to be done: If your spark plugs have not been changed for a long time, or you feel failures in the engine operation associated with ignition, then you must immediately replace them with new ones without delay. Do not try to save money by untimely replacement of spark plugs, since the cost of spark plugs is not very expensive, as well as the work of replacing them. By replacing old spark plugs, you will improve engine performance and reduce your vehicle's fuel consumption. Changing spark plugs yourself is quite easy. Basically, they are easily accessible under the hood of the car. You need a regular spark plug wrench to remove the spark plugs from the engine. It is also advisable to monitor the condition of high-voltage wires, since over time they can become unusable and allow electricity to pass through, which is transferred to the spark plugs, which will reduce the strength of the spark. Remember that regularly replacing spark plugs, in accordance with your car’s maintenance schedule, protects your exhaust catalyst from breakdowns and also improves engine performance!

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

Finding and eliminating the cause of error 4 on the Lada Kalina turned out to be quite easy. Although deciphering error codes requires special knowledge, the necessary information can be found in this article.

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

Car Lada Kalina [Hide]

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:

1. Check the sensor for functionality. If it “died”, then it should be replaced.
2. Check if there is contact and if there is any plaque. Clean the seat and replace the sensor.
3. Check the on-board circuit and make sure there is contact in it.
4. 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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