Decoding error codes Lada Kalina, Priora

On the Priora, like on many other cars, there is a display on the panel behind the steering wheel that displays the status of internal systems. When an error occurs, its number immediately appears on the screen. And there are a lot of these numbers, to decipher them you will need to read the instructions or article.

You often see error 4 there, which means problems with the coolant temperature sensor. What exactly is faulty there is up to the owner to figure out. For this purpose, additional testing and visual diagnostics are carried out.

Why does it occur: reasons

The reason for the appearance of the number on the display is rarely clear without a detailed analysis of the issue; there is only general information. But, according to the experts, the options are as follows:

1. The greatest probability is due to a malfunction of the coolant temperature sensor.
2. Further in descending order - the circuit with this sensor could break.
3. Due to external influences (accident, shock, etc.), the control unit system sometimes malfunctions and generates an error.
4. Plaque on the device may contribute to loss of contact.

Such reasons will not be a serious stumbling block to free travel, and will not make your wallet noticeably empty. Each of the points is completely solvable, both independently and at a service station, you just need to allocate time and a little effort for this.

How to check on the on-board computer

To carry out a check on the on-board computer, you need to insert the ignition key and simultaneously hold down the button that resets the daily mileage. When the correct actions are performed, all elements on the LCD will light up. And the arrows (speedometer, tachometer, etc.) will begin to quickly and continuously move from zero to the maximum indicator and back. Already here you can see how good the LCD indicator and sensors are.

Next, you can use one of the buttons that switches the functions of the bookmaker. As a result, a set of numbers will appear on the display indicating the version of the program currently installed. Now you need to apply pressure on the key again, then the error codes that are available in this car will appear there.

If you need to reset information from the LCD, it is best to press the button for three seconds, which resets information about mileage during the day. Now it's time to return the light to the sensors and use one of the BC keys. Due to the lack of impact on the system, after about half a minute the instrument panel will return to working condition.

Troubleshooting

There are several methods for troubleshooting the problem, but together they constitute a complete diagnosis of the car for faults in the coolant temperature sensor. After all, error number 4 gives a signal about exactly this. You can fix it like this:

1. First we check the sensor to see how well it functions. It copes with the assigned tasks, there are no complaints about the speed and clarity of data transmission - let's move on to the next point. Does not respond to signals - most likely, it is completely broken and requires replacement.
2. This is followed by checking for contact and absence of plaque. If a problematic connection is identified, the sensor will have to be replaced with a new one. And if the surface is covered with plaque, it is necessary to thoroughly clean the seat.
3. Now you can move on to the on-board circuit, make sure that there is contact there.
4. The remaining dilemmas usually lie in electronics, for this reason the car is taken to a specialist who can adjust the device. Usually in such a situation the ECU is re-flashed, which means that errors are prudently reset.

The issue of eliminating error 4 can be solved on your own, but not in one hundred percent of cases. Sometimes you have to turn to specialists to perform work that requires specific knowledge and skills. But it would be right to try to prevent a breakdown, since most often it occurs after a long period of parking in the cold in an open area (that is, not in a garage or covered parking).

p1558

This error usually occurs on cars with a 127 engine. It is associated with the throttle valve, the quality of which in this power plant leaves much to be desired. P1558 does not interfere with normal engine operation, but you can still try to fix it. Some people solve the problem by flashing it, but we offer a simpler method.

Remove the throttle valve, and then remove the cover - this can be done using a hexagon. We find a plastic gear inside - this is the working part. Lubricate the gear thoroughly and reassemble in reverse order. Most likely, error p1558 will disappear after these manipulations.

What does error 4 mean on Lada Priora and how to fix it

So, when self-diagnosis is carried out and error 4 lights up on the panel, then most likely the car has a problem with the coolant temperature sensor. Many people immediately ask the question “Which sensor should I change?”, but first you need to find out what exactly the problem is.

Note that in order to start self-diagnosis, you need to press and hold the daily mileage reset button + turn on the ignition. After a few seconds, the on-board computer displays an error code.

It is noteworthy that codes in different firmware versions may indicate different problems. Therefore, we recommend that you stock up on an up-to-date reference book. In our case, the software version is 1.0.

How other error codes are deciphered:

• code 2 indicates that there is high voltage in the on-board network;
• code 3 indicates a fuel level sensor error;
• error number 5 indicates incorrect operation of the outside temperature sensor;
• code 6 is engine overheating;
• code 8 – problems with the brake system;
• error number 9 indicates that the battery is discharged;
• P0441 – high or low air flow through the valve;
• P0443 – faulty canister purge valve control circuit;
• P0480 – failure of the cooling fan relay No. 1;
• P0481 – failure of the cooling fan relay No. 2;
• P0500 – incorrect signal from the vehicle speed sensor;
• P0503 – intermittent car speed sensor signal;
• P0506 – low idle speed if the idle speed control is blocked;
• P0507 – high idle speed when the idle speed control is blocked.

You can get acquainted with all error codes in more detail if you purchase a special book or on the official website of the manufacturer.

Cylinder misfires, causes, diagnostics, repairs

Unstable engine operation and shaking at idle, loss of power and increased fuel consumption, the appearance of a “Check” error on the instrument panel, jerking of the car and other troubles can be caused by a misfire in the engine cylinder.

There is nothing wrong with this, because if the engine runs but does not pull, it means that not everything is so critical.

Next, we will talk about how to properly diagnose a car and identify the cause of the malfunction.

How to fix the problem

To resolve the error, do the following:

1. Check the sensor for functionality. If it breaks, you simply need to replace it.
2. Make sure there is no plaque on the contact. If it is there, you need to clean it.
3. Check the operation of the on-board circuit and make sure that it has contact.
4. A random error can only be corrected by flashing the on-board computer, but to do this you need to go to the nearest service station.

So, you can solve this problem yourself, however, as practice shows, this does not always work out. It is worth noting that this code often appears in winter, if the car has been standing outside for a long time and not in the garage. It is noteworthy that it does not matter which engine is installed - 16 valves or 8 valves.

What to do if your car has trouble starting?

Hello, I have a Daewoo Nexia 2003, 1.6 engine, 16 valve. Problem with starting, I turn the ignition key and the starter does not work, I start clicking the key and after a few clicks the car starts. They changed the retractors and the electrician said that the flywheel crown had allegedly been damaged. The fact is that I also have a 55 AM battery, in severe frosts my battery was discharged and I installed a powerful one and the car started very well and there were no problems, maybe it skipped a couple of times in a week. Tell me what this could be, I changed the contact group on the ignition switch, there are no changes, I just somehow doubt it’s the flywheel. (Alexei)

Hello, Alexey. If you have doubts about the flywheel, it is better to contact another specialist for a more thorough diagnosis. But we have every reason to believe that the cause of your problem lies precisely in the battery, especially considering that with a more powerful battery, your Nexia started without problems. Try to check the performance of the battery yourself - we have already described this process, you can handle it, even if you have never encountered such a task.

What does error 4 mean on Lada Priora and how to fix it

So, when self-diagnosis is carried out and error 4 lights up on the panel, then most likely the car has a problem with the coolant temperature sensor. Many people immediately ask the question “Which sensor should I change?”, but first you need to find out what exactly the problem is.

Note that in order to start self-diagnosis, you need to press and hold the daily mileage reset button + turn on the ignition. After a few seconds, the on-board computer displays an error code.

It is noteworthy that codes in different firmware versions may indicate different problems. Therefore, we recommend that you stock up on an up-to-date reference book. In our case, the software version is 1.0.

How other error codes are deciphered:

• code 2 indicates that there is high voltage in the on-board network;
• code 3 indicates a fuel level sensor error;
• error number 5 indicates incorrect operation of the outside temperature sensor;
• code 6 is engine overheating;
• code 8 – problems with the brake system;
• error number 9 indicates that the battery is discharged;
• P0441 – high or low air flow through the valve;
• P0443 – faulty canister purge valve control circuit;
• P0480 – failure of the cooling fan relay No. 1;
• P0481 – failure of the cooling fan relay No. 2;
• P0500 – incorrect signal from the vehicle speed sensor;
• P0503 – intermittent car speed sensor signal;
• P0506 – low idle speed if the idle speed control is blocked;
• P0507 – high idle speed when the idle speed control is blocked.

You can get acquainted with all error codes in more detail if you purchase a special book or on the official website of the manufacturer.

Main indicators

The Priora dashboard contains twenty-four visual elements. When the ignition is turned on, all warning lights on the dashboard turn on briefly. Thus, the on-board computer (in the future, possibly BC) checks their serviceability. This is not a mistake, as some novice car enthusiasts think.

On the Priora shield, from left to right, there are four largest elements in the form of graduated semicircles.

1. The first scale is the tachometer scale, the purpose of which is to measure the engine speed. The values ​​are shown in two colors: white (normal) and red (dangerous). If the instrument needle falls into the last gap, then the Priora’s engine is in danger.
2. The second scale is a visualization of the car's speed - the speedometer.
3. The third graduated semicircle indicates the current antifreeze temperature. If the indicator needle hits the area with red numbers, the Priora should be stopped in order to avoid boiling in the cooling system.
4. The fourth semicircular scale of the Priora dashboard reflects the fuel level in the tank. When the arrow hits the area with red scale divisions, the yellow indicator lights up. It is located slightly lower and is depicted in the form of a gas station. This means that Priora has been transferred to the reserve level of gasoline consumption.

There are two green arrows to the left and right of the speed indicator. They light up when the corresponding turn is engaged or during an emergency stop.

The following indicators are located at the bottom of the panel from left to right.

1. Check signal, or Check Engine. This indicator lights up when a breakdown occurs in the engine and displays Priora errors on the instrument panel.
2. Lights up when there is a problem with the clutch system.
3. Signals that a certain airbag is disabled.
4. Indicates that an accident has occurred with the brake system.
5. If the passenger's seat belts are not worn, this indicator will illuminate.
6. BC screen.
7. It beeps and lights up if there is a malfunction in the immobilizer system.
8. Airbag failure indicator.
9. Indicator of the operation of external lighting devices: low beam or dimensions.
10. Lights up when the high beams are turned on.
11. Failure indicator in the electric amplifier.
12. Alarm when the emergency lights are on.
13. Reset button.

How to fix the problem

To resolve the error, do the following:

1. Check the sensor for functionality. If it breaks, you simply need to replace it.
2. Make sure there is no plaque on the contact. If it is there, you need to clean it.
3. Check the operation of the on-board circuit and make sure that it has contact.
4. A random error can only be corrected by flashing the on-board computer, but to do this you need to go to the nearest service station.

So, you can solve this problem yourself, however, as practice shows, this does not always work out. It is worth noting that this code often appears in winter, if the car has been standing outside for a long time and not in the garage. It is noteworthy that it does not matter which engine is installed - 16 valves or 8 valves.

After reading this article, many Lada Priora owners will be able to independently find and eliminate the cause of error 4. And despite the fact that special knowledge is required to decipher the error code, all the necessary information can be found in this article.

What to do if the radiator fan does not work?

My car's engine does not turn on from the radiator. Help me to understand! (Kairat)

As we understand, your problem is an inoperative radiator fan. If this is the case, then you first need to diagnose the expansion tank cap - make sure that its valve is working; if not, then the cap must be replaced. If this does not help, then check the functionality of the thermostat (if the lower radiator line is cold, then the thermostat must be replaced).

If these steps do not help, check the condition of the fuse. Find the mounting block in your car and open its cover - on its back there should be an image diagram with the purpose of all safety elements. If all the parts are intact, then you need to check the fan itself - it is connected directly to the battery, if it turns on when connected, this means that it is operational.

If your car has a controller for turning on the ventilation device, then it is diagnosed as follows:

1. On carburetor engines, you need to close the contacts of the regulator located in the radiator itself. If the fan is activated when closed, this indicates that the regulator is working.
2. On injection engines, the connector from the controller located near the thermostat is disconnected. Since the device is controlled by the control unit, it should be automatically activated in emergency mode. If this is the case, then this means that the regulator is not working (the author of the video is the Dmitriy Sherstniev channel).

Another possible reason could be an open circuit. Conduct diagnostics of all contacts, and also try to find a break; for this you will need a diagram, which should be in the service book.

Deciphering the error codes of the standard BC on Prior

P0441—Incorrect air flow through the valve. P0443—Canister purge valve control circuit is faulty. P0480—Cooling Fan No. 1 Relay Control Circuit Malfunction. P0481—Cooling Fan No. 2 Relay Control Circuit Malfunction. P0500—Invalid vehicle speed sensor signal. P0503—Intermittent vehicle speed sensor signal. P0506—Low idle speed (idle speed control blocked). P0507—High idle speed (idle speed control blocked). P0560—On-board network voltage is below the system operability threshold. P0562—On-board network voltage is too low. P0563—On-board network voltage too high. P0601—Controller ROM checksum error. P0603—Error writing/reading external RAM of the controller. P0604—Error writing/reading controller internal RAM. P0615—Starter relay control circuit open. P0616—Short circuit to ground in the starter relay control circuit. P0617—Short circuit to the on-board power source of the starter relay control circuit.

P0264—Short to ground in the 2nd cylinder injector control circuit. P0265—Short circuit to the on-board power source of the 2nd cylinder injector control circuit. P0267—Short to ground in the 3rd cylinder injector control circuit. P0268—Short circuit to the on-board power source of the 3rd cylinder injector control circuit. P0270—Short to ground in the 4th cylinder injector control circuit. P0271—Short circuit to the on-board power source of the 4th cylinder injector control circuit. P0300—Random/multiple misfire detected. P0301—Misfire detected in Cylinder No. 1. P0302—Misfire detected in Cylinder No. 2. P0303—Misfire detected in Cylinder No. 3. P0304—Misfire detected in Cylinder No. 4. P0327—Knock Sensor (DS) Signal Low . P0328—High signal level of the knock sensor (DD). P0335—Crankshaft position sensor (CPS) signal missing. P0336—The crankshaft position sensor (CPS) signal is out of acceptable limits. P0337—Crankshaft position sensor (CPS) circuit short to ground. P0338—Open circuit of the crankshaft position sensor (CPS). P0340—Camshaft Position Sensor (CPS) circuit malfunction. P0342—Low signal level of the camshaft position sensor (DPRV). P0343—High signal level of the camshaft position sensor (CPS). P0422—Converter efficiency is below the permissible threshold.

P0134—No signal (open circuit) of oxygen sensor No. 1 to the converter. P0135—Oxygen sensor No. 1 heater circuit to converter malfunction. P0136—Short to ground in the oxygen sensor circuit No. 2. P0137—Low level signal from the oxygen sensor No. 2 after the converter. P0138—High signal level of oxygen sensor No. 2 after the converter. P0140—No signal (open circuit) of oxygen sensor No. 2 after the converter. P0141—Oxygen sensor No. 2 heater circuit malfunction after converter. P0171—Fuel system (air/fuel mixture) too lean. P0172—Fuel system (air/fuel mixture) too rich. P0201—Open circuit for controlling the injector of the 1st cylinder. P0202—Open circuit for injector control of the 2nd cylinder. P0203—Open circuit of the 3rd cylinder injector control. P0204—Open circuit for the 4th cylinder injector control. P0261—Short to ground in the 1st cylinder injector control circuit. P0262—Short circuit to the on-board power source of the 1st cylinder injector control circuit.

P0102—Low signal level of the mass air flow sensor (MAF). P0103—High signal level of the mass air flow sensor (MAF). P0112—low signal level of the intake manifold temperature sensor (ITM). P0113—Intake manifold temperature sensor (ITM) signal level is high. P0116—The signal from the coolant temperature sensor (TTOZH) is out of the permissible range. P0117—Low signal level of the coolant temperature sensor (DTOZH). P0118—High signal level of the coolant temperature sensor (DTOZH). P0122—Low signal level of the throttle position sensor (TPS). P0123—High signal level of the throttle position sensor (TPS). P0130—Incorrect signal from oxygen sensor No. 1 to the converter. P0131—Low level signal from oxygen sensor No. 1 to the converter. P0132—High level signal from oxygen sensor No. 1 to the converter. P0133—Slow response to rich or lean oxygen sensor No. 1 to converter.

2 — increased voltage of the on-board network; 3 — fuel level sensor error (if a break in the sensor circuit is detected within 20 s); 4 — coolant temperature sensor error (if an open circuit of the sensor is detected within 20 s); 5 — error of the external temperature sensor (if there are no sensor readings within 20 s, the indication on the LCD is “-C”); 6 — engine overheating (the criterion for triggering the acoustic alarm is met); 7 — emergency oil pressure (the criterion for triggering the acoustic alarm is met); 8 — defect in the brake system (the criterion for triggering the acoustic alarm is met); 9 — the battery is discharged (the criterion for triggering the acoustic alarm is met); E - error detection in the data packet stored in the EEPROM.

5. If necessary, you can reset error information. To do this, press and hold down the daily mileage reset button for 3 seconds. 6. Press any of the control buttons again. All positions of the familiar areas (segments) should light up on the LCD - the system has returned to the state of point 2. 7. If you do not press any control buttons for about 15-30 seconds, the panel goes into operating condition. Error and malfunction codes, accessed through a plug-in BC (example - Multitronic), or on diagnostic equipment:

I took it from some forum:

Priora error codes. Error codes for Lada Priora

Error codes that can be accessed through the vehicle's standard BC: 1. Initial position: ignition off, battery on. 2. While holding down the daily mileage reset button, turn on the ignition. All positions of familiarity areas (segments) should light up on the LCD, which indicates the start of self-testing. 3. Press any of the on-board computer control buttons. The LCD should display the program version (Ver 1.0 and higher). 4. Press any of the control buttons again. The following error codes (if any) should be displayed on the positions of the first and second lines of the LCD:

I get error 45 what does this mean please help me

4 – coolant temperature sensor error*; 5 – outside temperature sensor error**; This means either there was a short-term loss of communication with the sensors, or they are faulty. Reset the errors, drive around and look at the errors again.

I get error 45 what does this mean please help me

The check light is on, I cleared the error codes and the check light is still on, what should I do to prevent the check light from burning?

Errors recorded by the bookmaker and the reason for the Receipt burning may not be related. In order for the check to go out, you need to disconnect the battery for a short time, or look for and eliminate the cause.

Guys, I have all the errors -23456789- on, what do they all mean and how can I reset them? I connected the computer to the brain and cleared all the errors that were displayed on the computer, but the device still showed the same errors, please tell me

Read the report more carefully! All error codes have been deciphered! To reset errors on the instrument panel, in error viewing mode, press and hold down the daily mileage reset button for 3 seconds.

The check light is on, I cleared the error codes and the check light is still on, what should I do to prevent the check light from burning?

Guys, I have all the errors -23456789- on, what do they all mean and how can I reset them? I connected the computer to the brain and cleared all the errors that were displayed on the computer, but the device still showed the same errors, please tell me

My version 4.2 shows error 78 E what does this mean or how to update or reset?? errors

Read the report more carefully! Everything is there! 7 – emergency oil pressure; 8 – defect in the brake system; E – error in the data packet of the non-volatile memory of the BC. To reset errors, in error viewing mode, press and hold down the daily mileage reset button for 3 seconds. If, after some time, errors appear again, look for the reason.

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.

As in any electrical/electronics, there are no miracles, only bad contacts. If there is a sensor malfunction, then there is a circuit from the sensor to the computer. There is a malfunction somewhere.

I have a Kalina 1118, as described in the article - this is a common mistake on viburnums, but I have never had one like this, not even my friends. I myself have installed the Delta CEP, all errors are clearly described and it is not difficult to find a solution on the Internet.

Everything is written correctly. But everyone forgets what a gigantic percentage of parts are defective. Personally, only the third sensor from the store worked for me.

Error 4 appeared occasionally a couple of years ago. Then it disappeared. For the last year it has been on constantly. But nevertheless, the device on the panel shows the temperature correctly... I tried to remove it, it lights up again and again... I gave up on this matter and just drive on... All systems work fine and ok... I tell everyone that it is on because it works engine…

There are two temperature sensors in Kalina and the one that gives readings to the tidy is located a little lower than this one, which is discussed in this article...

the device on the panel (arrow) is controlled by another sensor

Perhaps the wiring connected to the sensor has broken, and hence the emergency mode with increased fuel consumption.

I have the same problem. But here's the pies... I checked everything, the whole system is working, the sensor was replaced, the fan works when it heats up. But the check is on. I'll probably have to flash it...

We forgot another option for this error to occur, it is a bad mass, or rather a parasitic influence on the computer on board due to mass from other systems. In the harness that goes to the computer there is a twist of masses, they need to be untied, as you look for on the Internet.

Hello, Vladimir Did you have such a problem when the engine overheated above normal? I changed the thermostat, pump, cylinder head gasket, but the problem does not go away.

It pops up periodically......I remove the negative terminal for 2-4 minutes. True, you have to restore the settings of the clock and radio. But in general it can be jammed... if the cooling system is working properly

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

Masses see 100%

You need to connect through the test connector and look at the real code, for me the error on panel 4 turned into code P0343.

Good afternoon, evening, morning, whatever suits you. I would like to share a little information that I have thanks to the use of a Kalina car with a simple 8-valve engine. Once... or twice... or a season... in general, I encountered a popular problem that spoils the mood of many - the car “lived its own life.” The revolutions do not float like a child. While you're driving, it seems like nothing, but if you stop at a traffic light... there's a guard. She herself holds one and a half thousand, two, two and a half. I tried everything. First, I changed two sensors at once - dhx and dpdz. Nothing changed. Then I bought the same sensors only from a different manufacturer, in the hope of thinking that they were defective (both two and only I got the fool) in general, it didn’t help either. I went to different auto specialists (we have two in total), did diagnostics, just don’t forget to fix it, as they say. I even changed the firmware. Everyone threw up their hands! And the car continued to live its own life... Then, out of my mind, I changed all the sensors in a circle, including even the DMRV (the most expensive one). But nothing has changed. I was desperate. For two months this problem bothered me - you fly on the highway, it twitches; the consumption is crazy; you drive around the city and everyone shys away from you... I started sinning on the computer... Probably the khan came to him since the problem was global, but there were no errors!))) (I’m smiling now, then I wanted to cry). Issue price 11

Common error codes for Lada Priora

Modern Lada model

Like any modern foreign car, the Lada Priora has many different sensors installed. The condition of important vehicle systems depends on their correct operation. The problem is that if some sensors fail, the Priora can continue to move. Faults of this kind can lead to increased fuel consumption, unstable engine operation, and increased wear of parts, but the car will drive, and you will only find out about the fault when it means you have to make expensive repairs.

In order not to go into the engine compartment with a multimeter, the Priora has a controller that allows you to check faults using a special tester, a plug-in or built-in on-board computer. In order to diagnose the systems, just press 2 buttons and look at the error codes.

p0504

Also, many owners of a Lada Priora with 16 valves have questions about the appearance of error p0504. She tells the owner that there is a malfunction in the brake pedal sensor. To find out the exact reason for the appearance of p0504, you need to remove the sensor and disassemble it. Pay attention to its springs, one of them could burst - replace the damaged part.

see also

Another reason is copper contacts, which can burn. Inspect them and clean them if necessary. Sometimes error p0504 pops up due to the incorrect position of the brake pedal sensor on Priora 16. Twist it and check whether codes p0504 remain on the screen or not.

Diagnostics using the built-in BC

To view the error codes, you need to find the daily mileage reset button on the dashboard, press it and, holding it, turn the ignition key. The self-diagnosis mode will turn on. All arrows on the instruments should move from minimum to maximum values ​​and back, and all positions on the LCD display should light up. You need to look: if any position does not light up or the arrow on any device does not move, then you should check the corresponding sensors, their networks or display for malfunctions.

Priora on-board computer

In the same mode, press any button for switching modes of the built-in BC 2 times, after which digital codes may appear on the liquid crystal display:

• 2 - very strong voltage in the BS;
• 3 - errors in the fuel level sensor system in the gas tank;
• 4 - error in the coolant temperature sensor system;
• 5 - error in the air temperature sensor system outside the car;
• 6 — motor overheating;
• 7 — emergency low oil pressure;
• 8 - malfunctions in the brake system;
• 9 - battery is low;
• E - error in the data packet stored in the EEPROM.

Many drivers ask how to reset error codes on a Lada Priora. Perhaps their built-in BC is faulty, since a working on-board computer automatically exits the diagnostic mode after 30 seconds if you do not press any control buttons.

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The coolant temperature sensor (CTS) is not as simple as it might seem at first glance. Many people think that it is only responsible for turning the cooling fan on/off and displaying the coolant temperature on the dashboard. Therefore, if the engine malfunctions, they do not pay special attention to it. That is why I decided to write this article and talk about all the signs of a faulty DTOZH.

And so, the first sign is poor engine starting when cold . How this happens is that the engine starts and immediately stalls. More or less works only with gas. After warming up this problem goes away. Why might this happen? The coolant temperature sensor may provide incorrect readings to the controller. For example, that the engine is already warmed up (temperature 90+ degrees). As you know, starting a cold engine requires more fuel than starting a hot one. And since the ECU “thinks” that the engine is hot, it gives it little fuel. This is what causes poor cold starting.

The second sign is poor engine starting when hot . Here everything is exactly the opposite. DTOZH may always submit underestimated readings, i.e. “tell” the controller that the engine is cold. This is normal for a cold start, but bad for a hot start. A hot engine will simply fill with gasoline. Here, by the way, error P0172 may appear - rich mixture. Check the spark plugs - they should be blackened.

The third sign is increased fuel consumption . This is a consequence that follows from the 2nd sign. If the engine is filled with gasoline, then consumption will naturally increase.

Fourth - random activation of the cooling fan . Those. The engine seems to be working normally, only sometimes the fan will turn on for no reason. This is already a direct sign of a malfunction of the coolant temperature sensor. The sensor may give erratic readings. Those. if the actual coolant temperature has increased by 1 degree, the sensor may “say” that it has increased by 4 degrees or may not react at all. So, if the temperature at which the fan turns on is 101 degrees, and the actual coolant temperature is 97 degrees (working), then, having jumped by 4 degrees, the sensor will “tell” the ECU that the temperature is already 101 degrees and it’s time to turn on the fan.

It’s worse if the opposite happens - the sensor can sometimes underestimate readings. The coolant temperature may already reach boiling point, and the sensor will “say” that the temperature is normal (for example, 95 degrees) and therefore the ECU will not turn on the fan. Thus, the fan may turn on when the engine is already boiling or may not turn on at all.

Checking using a connected computer or tester

Driver Information Panel

Checking system malfunctions using connected devices gives more accurate results, but at the same time requires deciphering special codes. For example, the monitor displays code p0441 or p0130 or error p0422. Oh, these car manufacturers, in human language they could write “replace the oxygen sensor” instead of P0130 or “check the canister valve” instead of P0441. But nothing can be done, the Lada Priora is also intended for export, so it is easier to write p0441 in the program than to give explanations in Russian, Kazakh, Arabic, Armenian and 10 other languages. And then attach special tables that indicate the meaning of certain codes. Just look at them and everything will become clear. But these tables are not included with the operating instructions. Either way, you can check them out below.

All fault codes for Lada Priora car systems consist of 5 characters. Here is a breakdown of Prior's errors.

The Latin letter comes first:

• P - error in the electronic systems of the motor;
• C - error in the electronic systems of the chassis;
• B - error in interior electronics;
• U is an error in the joint operation of different systems.

• 0 - OBD-2 code;
• 1 - enterprise code;
• 2 - enterprise code;
• 3 - reserve code.

The system indicates an error

The next digit indicates the system in which the malfunction was found:

• 0 — exhaust;
• 1, 2 — fuel and air supply system;
• 3 - ignition;
• 4 - additional control;
• 5 — idle system;
• 6 - ESC;
• 7, 8 - transmission.

The last 2 digits indicate the serial number of the fault.

Checking the coolant temperature sensor

I will not show tables with sensor resistance values ​​at a certain temperature, since I think this method of checking is not entirely accurate. The simplest and fastest way to check the DTOZH is to simply remove the chip from it. The engine will go into emergency mode, the fan will turn on, and the fuel mixture will be prepared based on the readings of other sensors. If at the same time the engine begins to work better, then the sensor definitely needs to be changed.

For the next check of the coolant temperature sensor, you will need diagnostic equipment. First, you need to check the temperature readings on a cold engine (for example, in the morning). The readings must correspond to the ambient temperature. A slight error of 3-4 degrees is allowed. And after starting the engine, the temperature should rise smoothly, without jumping between readings. Those. if the temperature was 33 degrees, and then suddenly became 35 or 36 degrees, this indicates a sensor malfunction.

Deciphering faults in the fuel and air systems

• P0030 - the oxygen sensor heater wire to the exhaust gas converter has broken;
• P0031 - the same electrical wire has shorted to ground;
• P0032 - the same wire has shorted to the on-board network (BS);
• P0036 - the wiring of the oxygen sensor heater is broken, after the converter;
• P0037 - the same wiring has shorted to ground;
• P0038 - it has shorted to BS;
• P0102 - weak signal in the mass air flow sensor network;
• P0103 - very strong signal in the network of this device;
• P0112 - weak signal in the air temperature sensor network;
• P0113 - very strong signal in the network of the same device;
• P0116 - antifreeze temperature sensor signal is out of operating range;
• P0117 - poor signal from the antifreeze temperature sensor network;
• P0118 - very strong signal from the antifreeze temperature sensor;

Here we are looking for an electrical problem that has arisen.

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Malfunctions of auxiliary systems and ignition

• P0300 - no spark in all cylinders;
• P0301 - no spark in cylinder No. 1;
• P0302 - no spark in cylinder No. 2;
• P0303 - no spark in cylinder No. 3;
• P0304 - cylinder No. 4, no spark;
• P0326 - knock sensor readings are outside the permissible limit;
• P0327 - poor signal in the circuit of the same device;
• P0328 - signal too strong in the same circuit;
• P0335 - crankshaft sensor circuit is faulty;
• P0336 - crankshaft sensor readings are outside the permissible limit;

Camshaft sensor location

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