When you turn the ignition key of a Priora car, all electronic systems are checked and the check light comes on for a few seconds, this is normal, as it should be. It’s bad when the check light doesn’t light up when you turn on the ignition, which means the check system isn’t working. If the checkbox on a Priora comes on and is lit when the car is started, the owner immediately falls into panic for some reason - at least in most cases. There's no need to panic, but I wouldn't recommend not paying attention. The engine has 16 valves - Priora is equipped with sensors in many components and this may indicate a breakdown. The check light is on on the dashboard of the Priora car, bottom left. Sometimes the check light comes on, you look, and it just drove through a puddle and the knock sensor got wet. The check light is on, it blinks when cold, but there is no need to panic, we need to look for the reasons. Let's make a reservation right away: there are false positives. Read the article and find out all the reasons why the check engine is triggered.
What is a check engine?
“Check Engine” is translated from English as “Check the engine.” On different cars, on the dashboard there is either such an inscription, or simply “Check”, or an engine icon. On the Priora, it is the yellow icon that lights up, resembling an engine in shape. “Check” lights up in two cases:
- Checking the functionality of the sensors. When you turn on the ignition, all the icons on the dashboard light up, indicating that there is a signal from the ECU and the system is ready to operate. After 2-3 seconds of turning on the ignition, the icon will go out.
- Malfunction of the engine operating system. There are several important aspects. Firstly, the ECU does not receive data about all breakdowns: it cannot technically record any mechanical damage. Secondly, the appearance of this icon may be erroneous. But you shouldn’t trust the opinion “it’s all for nothing” - a problem with the engine can grow like a snowball and cost a pretty penny if you ignore it. Regardless of whether the “check” on the Priora is on or flashing, the problem needs to be solved.
Allow the check engine light to go off on its own.
Wait until the “check” goes out on its own. The simplest method because you don't have to do anything. The computer system in most vehicles will automatically recheck for problems that may activate the error light. If it is a minor problem, it will automatically correct itself and the check will go off. However, if the check light is still on after three days, you need to apply the methods mentioned above to reset it.
If this continues to happen despite the following reset procedures, you should take your vehicle to your nearest auto repair shop and have it diagnosed by a professional mechanic. Professional diagnostics use more sophisticated tools and can identify precise problems.
REMEMBER: You can always contact our car service center, where your car will be happy to receive professional technical assistance. You can also make an appointment with us for a scheduled technical inspection! Please familiarize yourself with our car repair and diagnostic services.
To check instrument panel error codes, you need to enable test mode. To do this, you need to press the daily mileage reset button and, without releasing it, turn on the ignition. All familiar positions should light up on the liquid crystal display (LCD), and the arrows of the tachometer, speedometer, coolant temperature indicator and fuel level indicator should move from minimum to maximum values and back. The serviceability of the LCD and the above sensors is visually checked.
Press any key to switch functions of the on-board computer (BC). The program version is displayed on the LCD.
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Press the BC function switch button again. The LCD should display (if present) the following error codes:
2 – increase the voltage of the on-board network,
3 – fuel level sensor error*,
4 – coolant temperature sensor error*,
5 – error of the external temperature sensor (if there is no sensor reading within 20 seconds, indication on the LCD is “-C”),
6 – engine overheating**,
7 – emergency oil pressure**,
8 – brake system defect**,
9 – battery is discharged**,
E – detection of an error in a data packet stored in EEPROM.
*- if an open circuit of the sensor is detected within 20 seconds
**- the criterion for triggering the acoustic alarm is met
If necessary, you can reset error information. To do this, press and hold down the daily mileage reset button for 3 seconds.
The next time you press any of the BC control buttons, all familiar positions should light up on the LCD - the system has returned to its initial state.
If you do not press any control buttons for approximately 30 seconds, the instrument panel enters the operating state.
Priora: why the check is blinking or on - the main reasons
The diagnostic connector will help you “talk” to the electronic control unit and find out why the check light is on. Well, before you start diagnosing, check out the list of the most common Priora “errors”:
- Low Oil Level – Low oil levels ultimately lead to increased engine wear. If the oil level turns out to be normal when checked, then it needs to be replaced and the integrity of all Priora components checked. Faulty fuel pump or fuel filter. You can’t always “hear” this, but diagnostics, replacing the filter, and checking the fuel pump will “cure” the breakdown.
- An error in the operation of the exhaust gas system - this is not something to joke about - it is better to start repairs as soon as possible.
- The ignition coil does not produce a spark / the catalytic converter is unstable.
- Wiring problems - high voltage wires can give an erroneous signal to the ECU - "Check" will light up on the dashboard.
- Malfunction of sensors - unfortunately, they very often fail. The “check” lights up due to the fault of the mass air flow sensor (MAF), two oxygen sensors (after the fuel afterburner and in the exhaust manifold), the crankshaft sensor and the camshaft sensor. In frosty weather, the “Check” may light up because three cylinders are turned on first, and then, during normal startup, it does not go away. This is due to the fact that soot particles remain on the contacts - they disappear after a few days.
- False sensor activation due to high humidity
- The engine starts running when cold and the check light comes on.
Checking high voltage wires
Quite often the engine starts to stall, not only when cold, but also at speed due to failed high-voltage wires. It is recommended to check the serviceability and functionality of the wires in the following sequence:
- the wires are disconnected from the spark plugs and ignition coil;
- using a special tester, measurements of high-voltage wires are taken;
- If the device indicates that one of the wires is faulty or if a violation of the integrity of the element is visually detected, it must be replaced.
Experts recommend replacing not just one wire, but using a complete set to ensure uninterrupted engine operation.
How to reset "Check Engine" on Priora
If the check light is on, then there are two solutions to the problem: fix it, or reset it. The engine icon that lights up is evidence that the ECU has received information about some kind of malfunction in the engine and is informing the driver about it. All errors remain in the computer's memory, so in order to get rid of them without repair, they need to be reset or erased. You can reset a check by following these steps:
- Turn off the engine, secure the car, and open the hood;
- Find the fuse box, in the yellow group, remove F1 (30 Amperes) and wait about 20-30 seconds;
- Put the fuse back and close the hood. Start the engine and check if the signal disappears.
For more than a year now, my check light has been on, I haven’t paid any attention to it, because the car drove great, and the check light can come on for nothing. And just not long ago the car started to malfunction when it was hot. There are many reasons for triple priors: - faulty ignition coils - spark plugs - clogged fuel pump - clogged fuel pump mesh - fuel filter - faulty oxygen sensor - clogged injectors So, to find out the specific reasons, first of all do computer diagnostics. This blog will cover:
1. computer diagnostics (300 rubles) 2. replacing the fuel pump mesh (55 rubles) 3. replacing spark plugs (570 rubles) 4. replacing the fuel filter (215 rubles)
Summary
So, we looked at why the car is tripping. These are not all possible reasons, but they help to accurately diagnose the operation of the motor and find the malfunction.
Priora 2013 mileage 82000 km. In the morning when it’s cold, it starts up fine and works fine, but after 1.5 or 2 minutes it starts to tighten up, and then one of the cylinders switches off completely and the check engine light blinks. Immediately I turn it off and start it again and again it’s fine for 1.5 or 2 minutes, and again it adjusts and the check comes again. And so on several times until the engine warms up to about 20-30 degrees. Diagnostics writes multiple misfires and misfires in cylinders 1,2,3,4. I have already changed two sets of spark plugs, four ignition coils, washed the injectors on the stand, changed the knock sensor, checked the pressure in the fuel rail (3.5 kg/cm2), measured the compression (14.5 kg/cm2) in all cylinders. It all started three months ago, first once every two weeks, then more often, and now every day! Sometimes even when it’s hot, the engine doesn’t start well.
Good afternoon everyone, this is the problem that has arisen here: sometimes when accelerating, this happens, for no apparent reason the check engine light starts blinking, the car stops accelerating at this time, in neutral you can hear the engine revving up and when you press the gas, it picks up speed in jumps. You have to turn it off. , after the factory everything works perfectly. We connected the computer, there is not a single error, everything works fine, what could be the problem? Could it be a misfire? Maybe someone has had this and can help me solve problems, I would be very grateful)
Trouble the engine: why is it dangerous?
This is a rather critical phenomenon, especially if the unit begins to vibrate during acceleration.
Considering that the Lada Priora has been manufactured since 2007, there are often instances where the engine knocks like on an old car 20 years ago. This is an engine running on three cylinders. It may have the latest firmware, but if the engine of a Lada Priora car is running rough and the check light is on, then such a car will not have much life left.
Supply system
If the Priora engine (16 valves) is tripping, the reasons may be trivial. When there is no flash in the cylinder, perhaps there is simply no fuel there. If it has a normal compression ratio, it is worth diagnosing the power system. You should pay maximum attention to the air filter and the pipe. It is necessary to make sure that the clamps are securely tightened, whether the purifier body itself is intact, and whether there is any air leakage from the outside. Also pay attention to the tubes. They must be tightly secured to the throttle assembly. Fuel leaks, cracks, and broken plastic may indicate that some parts are faulty.
Checking the air filter
If the spark plugs and high-voltage wires appear to be in full working order, and the engine still runs, you should check the air filter. Sometimes this element may simply become clogged, as a result of which less air will flow into the engine, which will cause the analyzed breakdown. According to experts, there is no point in cleaning the air filter from contaminants, because the cost of a new element is quite acceptable, so it is better to simply replace the filter that has become unusable with a new one.
Most often, car owners, after carrying out the above measures, manage to get the engine working and, as you can see, carrying out repair work is quite simple and easy. But if difficulties arise during the work, you can watch a training video lesson on the Internet resource, which is taught by real masters of their craft.
Despite the huge amount of criticism against the Lada Priora, this is one of the most popular cars that have come out of the AvtoVAZ assembly line in recent years. The Priora is equipped with a fairly successful engine with good dynamics, and the interior is very comfortable. And the maximum trim levels offer useful options. But at the same time, from time to time the car brings minor problems to its owners. One of the most popular malfunctions is that the Priora engine (16 valves) is tripping. The reasons for this phenomenon are quite unpleasant. And besides, the motor eventually overheats.
When the driver starts his car in the morning, the engine does not run smoothly as before, but intermittently. At this time, dull sounds are heard from the exhaust pipe. At the same time, a persistent and strong smell of unburned fuel is felt. Vibrations are constantly increasing, and this is fraught with cracks in the pillows. This is how the engine runs when cold.
Diagnostics of spark plugs by plaque
When the engine starts cold or hot, you can check the carbon deposits on the spark plugs. If the coating is white, then this indicates a lean mixture and overheating of the engine. A black tint indicates a rich mixture. In both the first and second cases there are problems with the operation of the electronics. This is either installing new firmware, or replacing the ECU. A normal candle has a brick color. By the way, the engine may stall at idle if the part is damp. This also significantly increases the warm-up time. In addition to the spark plugs, the ignition coil may also be acting up. Priora (8 valves) is equipped with distributor ignition. Overheating of the coil is often observed. You can restore the operation of the motor by simply replacing the element.
Conclusion
The reasons why the engine in a Lada Priora misfires can be determined independently, but not all car enthusiasts manage to eliminate them on their own. Therefore, if the materials provided in the article did not help, or turned out to be too difficult to understand, it is recommended to contact a car service.
Despite the fact that the Lada Priora 16 valves has many defects, this particular model is the most successful of the many varieties of VAZ. Among the most significant advantages are the following:
- dynamism;
- comfort;
- moderate fuel consumption.
However, this model also brings some problems to its owners, for example, the engine is difficult to start or immediately stalls, and the smell of gasoline is clearly felt even inside the cabin. But the most common problem, according to car owners, is that the Priora stalls when cold, as a result of which the engine quickly overheats. That is, if a car owner starts his car, and the engine begins to work with so-called interruptions, while specific sounds are heard from the exhaust pipe and a strong smell spreads from gasoline that has not burned completely, these reasons will indicate that the engine is running cold. You can fix this type of breakdown yourself, but in order for the repair work to be done correctly, experts recommend fixing the breakdown step by step.
