How to remove the error check light on Priora engine malfunction

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.

check engine on a Priora - looks like this

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:

1. 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.
2. 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.

In what cases is it necessary to remove the instrument panel?

Dismantling the Priora tidy is required for tuning or replacing burnt out lamps. The VAZ 2170 is a modern model, so there are not many fastenings on the panel. To disassemble you will need a set of screwdrivers. Don't forget to turn off the negative battery.

The process begins with removing the mounting block. To do this, you need to turn the latches on the fuse cover and then remove it;

Source

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.

The reasons for the “Check” fire on a Priora (16 valves), as we see from the list, can be serious. There is no need to panic: when the “Check” light comes on, you need to immediately reach for the diagnostic connector. It’s funny, but earlier diagnostics were carried out in the service with special software, but today any error code can be displayed on your smartphone, deciphering it using a mobile reading device.

There is another reason for engine malfunction - low-quality gasoline.

If this causes the spark plugs to flood, you will see the “check” blinking. Low-quality gasoline can be sold at any gas station; experienced car enthusiasts advise carrying a couple of candles with them. Sometimes the “Check” light comes on due to gasoline and the engine stalls. If he continues to work intermittently, things will be bad.

When do you need dashboard repair or replacement?

The Priora tidy does not have a large number of parts that are subject to frequent breakdowns. Typically, repair of the indicator unit comes down to replacing light bulbs and individual elements of the device. Users resort to replacing the board only when there is a malfunction of the contact group, connectors, or the board is damaged.

In case of serious damage (major short circuit leading to burnout of the main structural elements), repair may not be cost-effective. The cost of labor and materials often exceeds the price of a new module.

Possible malfunctions and ways to eliminate them

When operating a vehicle, individual components of the instrument panel may fail. Among the most common breakdowns are factors.

1. Burnt out contact of one of the indicator lamps. Usually resolved by replacing the light bulb.
2. Failure of the contact group can be eliminated by completely replacing the module - resoldering the part is not economically profitable.
3. Malfunction of arrow indicators. It can be fixed by replacing the block.

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:

1. Turn off the engine, secure the car, and open the hood;
2. Find the fuse box, in the yellow group, remove F1 (30 Amperes) and wait about 20-30 seconds;
3. Put the fuse back and close the hood. Start the engine and check if the signal disappears.

the Lada Priora engine troit?

8 and 16 valves and what to do

Lada Priora

- a favorite among Russian cars, sales of modern vehicles are breaking records. Among the advantages of the Priora, owners note a good engine, which, in comparison with other Lada models, has the best dynamics; the interior is also very comfortable. But it doesn’t happen without effort, for example, an engine designed for 8 or 16 valves often fails.

A malfunction results in the motor quickly overheating, working as hard as it can, and then burning out a little later. Newbies are interested in what it means to “trouble” the engine? Experts explain that when you start the engine, it runs intermittently, and dull sounds are clearly audible from the exhaust pipe. Unburnt fuel emits a strong, stuffy odor, vibrations increase over time, and cracks form in the cushions.

See:

Oxygen sensor

The "check engine" warning sign indicates a malfunction of the engine. First of all, you should check the operation of the oxygen sensor. It relates to the exhaust gas production system, so it shows the amount of oxygen that has not been burned in the combustion chamber of the engine. The device provides control of gasoline consumption on a Lada Priora car.

If the sensor is broken, the vehicle's computer control system does not receive the necessary data, which can cause fuel consumption to increase and engine power to decrease. There are up to 4 oxygen sensors depending on the car model. At home, you can use a computer error scanner, or you can contact a service center.

Why does the oxygen sensor break down? The older the car gets, the larger the layer of used engine oil on the parts, which reduces the correct operation of the sensors. If you do not change and check the condition of the oxygen sensors in the Lada Priora, the catalyst will break, which may burst and lead to serious repairs. New catalysts are expensive due to the presence of valuable metals in them, so it is better to focus on preventing the problem. If the check engine light comes on, you need to look into the sensors and determine the reasons.

When the seal is broken

When the check engine light comes on, you need to check the tightness of the fuel system; this is the reason why the light may be on. Don’t immediately suspect serious damage; start with small but important details. If there is a leak in the fuel system, air escapes somewhere in the fuel tank filler cap. This increases the overall fuel consumption, a malfunction occurs, so the system reports an error.

Check the engine operation of the Priora by ear. If the “check engine light” is on, the car is still running at normal power, there are no extraneous sounds from the running engine, no knocks, hums or squeaks, then the problem is the tightness of the fuel tank. From a technical point of view, it may be that the lid is not tightened enough or there is a crack in it. Correct what you can do with your own hands and see if the light on the Priora continues to light. Perhaps the problem will be solved after tightening the cover or replacing it.

Another problem that leads to a burning “check” is the exhaust gas catalyst on the Lada Priora. It serves to clean exhaust gases. Without a properly functioning part of this type, not only the driver suffers, but also the environment, as the composition of the exhaust gases deteriorates. The catalyst converts carbon monoxide and has an important function. This is also dangerous for the driver, and it is undesirable to drive with a malfunction of this kind. If the problem is in the catalyst, then the power will decrease by 2 times. In this case, a warning message will light up on the dashboard. Press the gas pedal and analyze the dynamics of acceleration.

If you take care of your car and perform regular maintenance, there should be no problems with your exhaust catalyst. It should be understood that one small problem on Priora can lead to other, more serious consequences.

What is the danger when the engine stalls?

The first obstacles, now you understand, begin when you try to start the car. The Priora cannot be accelerated at all with the engine running like this, because in due course of acceleration the vibrations become even stronger. There is no need to experiment with overtaking on the road if you are driving the car when the engine is shaking - at that time the engine power decreases sharply, which means that there is a possibility of a lack of dynamics to successfully complete the maneuver.

The Priora has been in production since 2007, which is why in some cars the engine rattles as if it were already a quarter of a century old. This is how a 3-cylinder engine works. Even if the latest firmware is installed, a faulty engine will cause the check to glow. This is fraught with a reduction in the service life of the car.

Why is the check engine blinking and the engine shaking? The car began to slow down.

Engine damaged

,
the check
, the engine does not pull, it jerks. I turn off the ignition. , I start it again and it’s fine.

1. There is no flash in the cylinder - check if there is fuel. At a normal compression level, you need to test the operation of the accounting power system. Focus on the air filter and pipe: are the clamps tightened tightly, what is the condition of the purifier box, is the air intake from outside adjusted. The tubes located on the throttle assembly are made to be firmly fixed to it. Traces of fuel leaks, visible cracks and chipped plastic are unacceptable.
2. The engine may stall
   due to a clogged injector. For this reason, specialists categorically do not accept filling the tank with cleaners sold for injectors. In fact, no cleaning occurs - the contaminants peel off in the tank, and then the fuel line becomes clogged. There is a build-up in the small nozzle and it will get stuck.
3. The winding of the injector parts burned out.
4. Low quality fuel.
5. Test the spark plugs.

What to do when the Lada Priora engine troits

Lada Priora engine repair

in artisanal conditions it depends on the cause of the malfunction:

1. If the combustion of the windings of the injector parts is to blame, remove the cover, and then remove the manifold. Assess the condition of the windings and measure the resistance using a multimeter. The best resistance level is from 11 to 15 ohms. At the lowest level of values, the winding must be replaced.
2. If the resistance indicates normal characteristics, remove the fuel rail and thoroughly wash each part with water. However, it is harmful to take on a deficiency in this category if you do not have the ability to repair it - be as careful as possible. For flushing to be successful, open the valves suitable for the nozzle, and then apply an aerosol-type flush under pressure.
3. If you have doubts about fuel, completely drain the old one and fill the engine with 8 or 16 valves of 95 gasoline. A high octane number is not advisable; on the contrary, this option may lead to overheating of the engine. If changing gasoline does not help, then change the air and fuel filter units.
4. How to check if a spark plug is working properly? It’s actually simple - let the car cool down well, otherwise, when you start unscrewing the elements, you can get a severe burn. After switching off, after just a little ignition, the faulty spark plug will be moistened with gasoline. Also see if the candle can create a spark.

If it is impossible to repair the spark plug so that the engine stops firing , it is completely replaced, and it is not at all necessary to go to 100. Armed with a 10-12 key, turn off the elements responsible for the ignition. Then carefully clean the spark plug from dust, otherwise debris may get into the Lada Priora

.

A tire compressor is suitable for this procedure; in the latter case, a brush. Then remove the spark plug with a spark plug wrench, where the head with the gasket is certainly fixed. New devices are installed with the same screwing.

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