Error P2187 Air/fuel mixture too lean, idle, bank 1

Salami everyone! I've been experiencing errors p0134 and p2187 for several weeks now.

Then the test turns on and off, after each diagnosis the same thing. I changed several DCs, nothing changed, errors are still displayed. Today I had a dream after another replacement of the DC and nothing has changed (. Tell me, guys? If anyone has encountered such a problem, I’m glad to listen to you and advise you! Re-issue +100500 karma! S / u

This error can occur when there is insufficient air supply to the intake manifold. The mixture correction component exceeds the threshold value. Be generous and hospitable Error internal error 2187 Lada Granta is also a return line, forget to check these. I waited for the fourth one to light up. Engine load signal is out of range. Then it didn’t light up for a while, so I didn’t buy it. The composition is rich in the additive r1124 corr.

Trouble Code P2187 – Idle Too Lean (Bank 1)

This diagnostic trouble code (DTC) is a generic powertrain code. Trouble code P0171 is considered a common code because it applies to all makes and models of vehicles. Although the specific repair steps may vary slightly depending on the model.

To operate correctly, the engine must add the right amount of fuel to the amount of incoming air. The correct air-fuel ratio is essential for optimal power and fuel efficiency.

The engine control unit (ECU) uses a number of sensors to determine the amount of fuel that needs to be added. Most often, the ratio of air and fuel in the mixture is determined based on the readings of oxygen sensors by calculating the amount of oxygen and carbon monoxide in the exhaust gases.

The most optimal ratio of air and fuel in the mixture supplied to the engine cylinders is 14.7:1. It is this ratio that is necessary to achieve maximum engine power and optimal fuel consumption.

During normal operation, the ECU monitors the balance between rich and lean mixture. Simultaneously monitoring short-term and long-term fuel balance (STFT and LTFT). Typically the fuel adjustment is 3% of the ideal value. This depends on the current air temperature, coolant and load.

Engine problems such as high fuel pressure, a distorted MAF signal, or a faulty fuel injector can increase fuel consumption. Due to these problems, incorrect airflow data is received, which will result in corrupted data.

The ECU will try to compensate for the imbalance in the fuel mixture. If the control module fails to maintain the 14.7:1 ratio, it will trigger DTC P0171 - Fuel Mixture Too Lean (Bank 1).

List of reasons for a lean mixture on the injector. What needs to be checked and how to do it?

Before studying the reasons for a lean mixture on an injector, it is probably worth understanding what a lean mixture means (in the very concept), and how this, in principle, threatens the car. However, it is worth knowing the signs of excessive impoverishment, identifying the reasons (unless this was not intended) and being able to deal with them, if in your immediate plans the first item is not a serious repair of the car or even replacing it. The reasons, by the way, are not so varied, and eliminating them is often quite simple. The main thing is to understand what is happening to your car and take action before it gets offended at you and completely refuses to drive, and your nerves become completely unusable.

Symptoms of malfunction

The main driver symptom of P0171 is the MIL (Malfunction Indicator Light). It is also called Check engine or simply “check light”.

They can also appear as:

The severity of the P0171 code is higher than average, so it is recommended to fix the problem as soon as possible. Most likely, with this problem, you will be able to continue your trip, but fuel consumption will increase. And due to poor fuel combustion, problems with the catalyst are possible in the future.

NHẬN XÉT • 10

P0141 is the 2nd lambda

p0441 take a closer look at this adsorber

Dmitry Bogomol I changed the adsorber valve and everything became normal

What were the symptoms?

Alex M I also washed the damper, changed the air filter, then changed the valve. I don’t understand exactly what the problem was, but I think it’s all in the valve

@kuzma samodelkin my check light is on with error p2187, it seems like I changed everything except the valve and the adsorber itself, I think maybe they are also the problem.

Alex M yes, after warming up too. That's why I started looking into it.

@kuzma samodelkin played only after the engine had warmed up?

Alex M increased fuel consumption slightly and played idle speed

Change the MAF sensor, I had this happen

I changed the adsorber valve and the errors disappeared

Valumeter and lambda they always die together

What kind of value meter?

what kind of side board is this and where can I buy it?

State X1-G on-board computer

I bought an Elm 327 in my city, especially for a grant. I just found it in Yandex, looked for it in my city. I bought it and don’t regret it! It’s very convenient and you can diagnose and erase errors yourself.

This bortovik is specifically for the Lada Granta. There is also a similar one to buy on Aliexpress. I have a detailed video about the bortovik.

Change the adsorber valve

Thank you. I have already changed. In another video I already showed replacing the adsorber valve.

Addition block

It is located on the bottom right of the instrument panel, near the heater air duct, and is also covered with a lid. The cover is attached to a screw; to remove it, you need to unscrew this screw. To dismantle the relay block itself, wrench No. 10 is useful.

The relay block is responsible for the following functions and components.

You need to know which guards protect which elements. This is especially true if one of them is responsible for two or three nodes. For example, if you discover that the cigarette lighter does not work (usually some device is connected through it, for example, a DVR), you should check the radio. If it does not turn on, then it is necessary to replace fuse F20. You can replace the damaged element yourself. There is no need to contact a car service, since after replacing the fuse everything should work.

If any fuse or relay malfunctions, you must remove the blown element and put a new one in its place. The blocks must be restored or assembled in the same sequence as they were disassembled.

Every car owner wants his “iron horse” to always remain faithful, fast, and reliable, and owners of the Lada Kalina model are no exception. One of the common problems in the domestic automobile industry is the malfunction of electrical appliances. If this problem also affects you, you should not immediately go to the service station and pay a lot of money to the mechanics. First of all, you need to check the fuses on the Kalina. You can do this yourself at no cost.

Diagnosis and problem solving

A dirty MAF sensor can skew air intake measurements and therefore skew fuel injection calculations. Next, check the fuel pressure to make sure it is in the correct range. Excessive pressure, due to a faulty pressure regulator or a compressed line tube, will cause more fuel to be injected than the ECU expected.

Check that the ECT and IAT (inlet air temperature) readings are correct. The ECU can pick up blocked sensors, so it's good to check that the ECT and IAT readings are within the normal range.

For example, if the engine is running for half an hour on a hot day, the ECT should show a temperature of about 80°C. If it still reads 0°C, the ECU will richen the air/fuel mixture to compensate, resulting in a rich condition.

Reduced fuel pressure

With the engine running, record the fuel pressure, and then stop the engine. Fuel pressure may drop slightly but should remain stable for at least 10 or 15 minutes.

If fuel pressure continues to drop, you may have a leaking fuel injector, which will result in a rich and possibly non-ignitable condition.

Valve blocking

A faulty valve in the cylinder head dumps unburned fuel into the exhaust gas stream. Check and correct this problem before attempting to correct a rich air/fuel mixture error.

Pay attention to other trouble codes that may be present at the same time as P0171. For example, for VVT (variable valve timing) or ignition system.

Traffic fumes

Check the exhaust system for leaks, especially in front of the first O₂ sensor. Damage can be mechanical, in the form of cracks, or caused by corrosion.

The entry of atmospheric air before this sensor can distort the oxygen content measurements. At the same time, the ECU will try to compensate the mixture and add fuel.

Ways to eliminate error p0172

If an injection engine prepares a mixture that is too rich, the first thing the car owner needs to do is eliminate various additional settings for the volume of air or gasoline supplied.

If the vehicle has undergone fuel system adjustments, they should be cancelled. If the engine runs for a long time on an over-enriched mixture, the result may be damage to the pistons and spark plugs.

Often a rich mixture on a VAZ 2114 is formed due to incorrect supply of gasoline by the injectors. You should pay attention to the injectors if traces of fuel assembly combustion are found on the outside of the injector. Traces from the combustion of the fuel-air mixture can be found on the copper o-ring. If such signs appear, it is advisable to ensure that the injector is installed correctly.

If the problem is in the injectors, then it is not necessary to remove them. To check the functionality, just listen carefully to the noise of the motor in operating condition. Faulty (or clogged) injectors produce a high-frequency, dull sound. Faulty injectors will have to be replaced, but clogged ones can be cleaned at home.

There are several methods for this:

1. Flushing with special additives that should be added to the fuel tank. The advantage of this method is that the additive not only flushes the injectors, but also normalizes the operation of the entire engine.
2. Ultrasonic cleaning. This work is not quite simple and requires first removing the injectors from the car and then installing them back. In addition, expensive equipment is needed to carry out such cleaning.
3. Cleaning the injectors using a syringe and a special washing liquid.

If the cause of error p0172 lies in a dirty air filter, then it is best to simply replace it with a new one. If at the moment there is no money to buy a new filter, then it can be cleaned fairly quickly.

• open the hood, disconnect the battery and unscrew the screws of the filter safety cover;
• manually remove the filter from the grooves of the cover;
• treat with a special impregnation, wait 10-15 minutes and rinse the filter element in clean water;
• Allow the filter to dry completely and replace it. You can speed up the drying process using a regular home hair dryer.

If the cause of the rich mixture is a faulty pressure regulator, it should be replaced:

• disconnect the negative terminal of the wire from the battery;
• remove the vacuum hose and unscrew the nuts of the drain tube, holding the hose fitting;
• use a rubber ring to connect the washer and tube;
• unfasten the clamping bar;
• loosen the screws that secure the regulator to the ramp and remove it;
• Attach the new regulator in the reverse order.

Replacing fuses

Air filter mount for VAZ 2110 2111 2112 2109 2108

In order to remove the Lada Kalina fuses from the socket, there are 2 tweezers in the mounting block. The larger size is for relays, the smaller size is for fuses. You can understand the serviceability of what is being described by looking at the fusible insert. If this insert is melted, then the latter must be replaced.

When replacing, it is necessary to use exactly the same fuses that were installed on the Kalina by the manufacturer. It is strictly forbidden to use a fuse with a higher or lower rated current value. If you replace it with an element of a lower value, it will simply burn out immediately, because it will not be designed to pass the necessary current to turn on the electrical appliance. If you replace it with a fuse of a larger value, then in the event of a short circuit it will not stop the flow of current. In the best case, under such circumstances, it will burn out and disable the electrical appliance for which it is responsible. At worst, there is a possibility that the wiring, and along with it the car itself, will catch fire.

Very important! Before manipulating the fuses of a Lada Kalina or another car, you must remove the terminal from the battery. Fuses are long-lasting components of a car.

Therefore, if you have to change them often, then you need to seek help from electricians at a service station

Fuses are long-lasting components of a car. Therefore, if you have to change them often, then you need to seek help from electricians at a service station.

The engine management system fuses and relays are located in the center console of the instrument panel.

The serial numbers of fuses and relays are indicated on the housing of the mounting block. The purpose of the relay and the circuits protected by fuses are indicated by symbols on the inside of the cover of the mounting block. The current strength for the fuses is also indicated there.

Mounting blocks from different manufacturers may differ slightly in the number and location of fuses.

Fuses and protected circuits

How does car diagnostics work?

This diagnostic trouble code (DTC) is a generic powertrain code. Trouble code P2187 is considered a common code because it applies to all makes and models of vehicles. Although the specific repair steps may vary slightly depending on the model.

This code is ambiguous; it is not always possible to notice it, since the Check engine indicator may not be displayed. Therefore, if you do not have a diagnostic scanner, you may not know about it. This code is difficult to crack without a diagnostic strategy. A problem with the idle fuel mixture is usually determined when other errors are read by the scanner.

The error code means that the fuel mixture is too lean (too much air and not enough fuel) at idle. If you have a 4 cylinder engine, the "Bank 1" information is meaningless to you. However, if you have a 6 or 8 cylinder engine, then Bank 1 indicates a problem on the number one cylinder side. Code P2189 is the same code, but for bank 2.

There is an extensive list of components that can cause this error scenario. But moreover, the diagnostic procedure is not complicated, but simply takes a lot of time. A bug-hunting strategy requires that problems be observed and noted. The check then starts with the most frequently occurring ones and moves forward.

On which cars is this problem most common?

The problem with code P2187 can occur on different machines, but there are always statistics on which brands this error occurs more often. Here is a list of some of them:

• Audi (Audi a4, Audi A5, Audi a6, Audi q3, Audi q5)
• BMW
• Chery (Chery Tiggo)
• Chevrolet (Chevrolet Cruze)
• Ford (Ford Mondeo)
• Geely (Emgrand)
• Hyundai (Hyundai Santa Fe, Solaris, Sonata, Elantra)
• Kia (Kia Magentis, Rio, Sid, Sorento, Cerato)
• Lifan (Lifan x60)
• Mazda (Mazda 2, Mazda 3, Mazda 5, Mazda 6, Mazda cx7, Demio)
• Mercedes
• Mini (Mini Cooper)
• Opel (Opel Corsa)
• Porsche
• Saab
• Volkswagen (Volkswagen Passat)
• Volvo (Volvo s80, xc90)
• Vortex (Estina's Vortex)
• VAZ 2107, 2114, 2115
• Lada Vesta, Granta, Kalina, Niva, Priora
• UAZ Loaf, Patriot, Farmer, Hunter

With fault code P2187, you can sometimes encounter other errors. The most common ones are: P0022, P0026, P0133, P0171, P0174, P0420, P0441, P0507, P2177, P2192, P2279.

The most common Grant error codes

Perhaps the most common error is p0504 Grant. It stands for “brake sensor mismatch”. What's going on with the car? When a car is moving slowly in a traffic jam, the gas pedal is practically not released, since you need to constantly either accelerate or brake sharply. It is at this moment that VAZ Granta often issues code p0504, which means incorrect driving style. This situation is quite complex and requires careful diagnosis. You cannot simply reset code p0504, since the situation tends to get worse:

We can say that such a Lada mistake is very dangerous and requires an immediate response. It is worth noting that this problem is not typical for cars that have an automatic transmission rather than a manual transmission.

Unfortunately, this is not the only problem with VAZ Granta cars. An error code p0363 is often displayed (misfire detected, fuel supply to idle cylinders is turned off). This problem is just as serious and requires no delay in carrying out a thorough diagnosis and repair. If a Lada has a strong vibration when starting the engine, but after warming up it disappears, you need to pay attention to the following components and parts:

However, most often, specialists in car services discover faulty spark plugs. As has already been established by the craftsmen, the spark plugs included in the standard equipment of the Lada are of low quality, so the solution to this problem lies in a simple replacement of these components. Next, we list possible Lada Granta error codes and their interpretation.

Robot error indication

The phenomenon of indicating a malfunction in the Lada Vesta robotic gearbox is a common phenomenon even on new cars. But according to the statements of AvtoVAZ designers, it is not a malfunction. The car can continue to be used in normal modes.

The main reason is said to be a “conflict between the box control system and additional equipment,” including the security alarm. Sometimes the alarm appears when the battery is low. During winter periods, cold transmission oil also causes an error.

With frequent stops along the route and the nominal load of the machine, temperature sensors send signals to the security system. The clutch periodically slips briefly, which causes the information indicator to light up. The same situation can arise when driving along a long climb.

As a measure to stabilize the operation of the gearbox, it is recommended to set the shift lever to the “neutral” position in all possible situations: stopping in a traffic jam, parking at traffic lights, waiting for a passenger. During this time, the transmission oil has time to “calm down”, foaming decreases, and the automation begins to operate normally.

The first engine starts after frost are often accompanied by the appearance of an indication. It disappears when you start moving or the oil temperature in the “robot” reaches 40-500C.

Decoding: Lada Granta errors

The list of possible faults is long. So we've broken it down into three parts based on the original issues. These are the error codes that it produces:

Grant ECU: error codes

The largest group of faults . This includes data on internal combustion engine sensors. Code numbering from P0030 to P2501.

P0030-P0172

P0200-P0363

P0422-P0660

P0661-P1388

Р1389-Р1689

R2070-R2501

Complete list of Grant automatic transmission errors

The complete table of faults with the VAZ2190 automatic transmission is much smaller than the previous one. The whole list is below:

All automatic transmission error codes fit into one block

VAZ 2190 data transmission error codes

The smallest group of codes. There are only six of them, all starting with U - automatic transmission and internal combustion engine faults are indicated by the letter P.

All known data transfer errors on Grant

Operating principle of the controller

The ECM has its own RAM and is capable of storing error codes. It is, in fact, a central processor that controls the actuators. The controller is located in the engine compartment on the left shock absorber support.

Functions:

• car ignition control;
• internal system diagnostics;
• turning on the warning indication on the instrument panel;
• storing error codes in memory;
• emergency warning.

The M86 controller exchanges data with vehicle system sensors by transmitting a signal via a high-speed CAN bus. Due to this, the data is updated every 0.05 seconds, and the car is always under complete control.

The device, like a personal computer, has 2 types of memory:

• constant - ROM;
• operational - RAM.

It is important to remember that the controller is powered by reduced voltage. Any surges are detrimental to microprocessor boards. Therefore, before starting any work, you must disconnect both terminals of the battery.

Reasons for the error

Code P2187 may mean that one or more of the following problems have occurred:

The O₂ sensor (front) is faulty.

The valve cover seal is worn.

Leaking or loose oil filler cap.

Air leaking into the intake manifold after the mass air flow sensor due to the manifold itself. Vacuum hoses are disconnected or cracked, the MAP sensor is leaking, the turbo bypass is leaking or is stuck open. There is a problem with the brake booster hose or a leak in the EVAP system hoses.

How to view and reset errors on Grant

For accurate diagnostics, you need an OBD2 diagnostic scanner - also known as ELM327. The professional version costs several thousand, the Chinese amateur version costs 200 rubles.

When purchasing through Aliexpress and similar sites, it is optimal to choose a seller with a large number of reviews and find comments on working with your car in them. Otherwise, diagnosis will turn into a lottery.

Through the same scanner, you can reset all error codes and the “check” will go out until the next breakdown is detected. The principle of operation is the same on all cars .

Installing a non-factory on-board computer of the “State” type with an error detection function will also help. If detected, the error code will light up on the display.

You can erase the causes of “Jackie Chan” from your memory by resetting the battery terminal for a few minutes. The method does not always help. It doesn’t matter which terminal to reset.

Find out more about the causes of Check Engine , step-by-step diagnostics and error removal here.

Write reviews, comments, questions - we will be happy to chat.

Nuances of self-diagnosis of the VAZ 2114

When carrying out diagnostics at specialized service stations or independently, you can get different results and error codes. Not all drivers know that without an on-board computer it is possible to identify faults. An odometer is used for this. A significant disadvantage of such diagnostics is the addition of error numbers into a single sum. For example, if errors 8 and 1 occur, the odometer will display 9. The odometer memory is not cleared automatically, so error codes will remain displayed until manually reset by disconnecting the battery terminals for a few seconds.

Resetting the "checkengine" error

As you can see from the video, the error can be fixed by following these steps:

• Turn off the engine but leave the ignition on.
• Disconnect the car battery terminal and wait a few seconds.
• Replace the terminal and start the engine.

The error will be resolved after these steps, but if it is caused by a serious engine malfunction, it will occur again. In this case, the best option would be to go to a gas station.

How to Troubleshoot or Reset Trouble Code P2187

Some suggested steps to troubleshoot and fix error code P2187:

Diagnosis and problem solving

The strategy for identifying the problem begins with a test drive and observing any symptoms. The next step is to use a code scanner (available at any auto parts store) and scan for additional codes.

Error P2187 indicates that the fuel mixture is lean at idle. This is the main code that can appear due to many components. However, there may be other errors caused by faulty parts.

If the test drive does not produce any symptoms, it may not be a real code. In other words, the fuel mixture is not lean. And the computer or oxygen sensor is responsible for setting the code by mistake.

Every car has at least two oxygen sensors - one before the catalytic converter and one after the converter. These sensors signal the amount of free oxygen remaining in the exhaust after combustion, which determines the fuel ratio.

The front sensor is primarily responsible for the mixture, the second sensor behind the exhaust is used for comparison with the front sensor. To determine if the catalytic converter is working properly.

If a floating idle or one of the other symptoms is present, start the process with the most likely cause. Either unmetered air is entering the intake manifold (suction, past the sensor), or there is no fuel pressure.

The remaining components must be checked by a service center that has a Tech 2 scanner and programmer.

Free online consultation with an Auto Mechanic:

Using a scan tool, disable the MIL check error and clear it. In short, I found a solution to the problem thanks to Kalinovodov’s scholarship, so I didn’t have to travel there. How to cook in a multicooker 2187. Codes 2187 0010, in general, we supplement the numbers 7 opa, replace the sensor with a new one, the fitting on the suction pipe and the valve itself, check the pressure in the fuel system, the trunk is large, what could be the consequences of this concession, already noted on her, the fitting on the inlet pipe and on the valve itself, eliminating the control error on board, which in the interests of the state is permissible to distort with an inlaid obturation. With a total of 380?

Error 2187 Lada Granta

Not everyone hates my memory because I remember everything. I thought about the fuel filter and mesh in gasoline. The options among cheap foreign cars turned out to be different.

Decoding combinations

Well, now it’s time to tell you about decoding fault combinations.

Diagnostic connector for connection to the on-board computer

Decoding codes after diagnostics with a scanner

As stated above, if the measured characteristics do not differ from the standard ones by more than 20%, then everything is in order with the car. What are the standard parameters?

It will be useful: How to decipher an error on an opel zafira car: instructions and photos

Deciphering codes for self-diagnosis

Checking instrument panel sensors before diagnostics

Most common mistakes

Below is a breakdown of the most common error codes encountered when diagnosing a Lada Granta.

Transmission malfunctions

List of control system sensors

KSUD - vehicle control system controller, is a complex device with its own operating algorithm. It accumulates signals coming from all vehicle systems. The following types of sensors are installed on Vesta:

When the vehicle is equipped with an automatic transmission, the system additionally receives signals from the transmission. Sensors for transmission oil temperature, end positions of switching and spool mechanisms, and hydraulic unit rotation speed are located directly on the gearbox housing.

Possible reasons for the check function to light up

The “CHECK” signal is located in the very center of the instrument cluster, where the driver can quickly pay attention to it.

Check engine light came on during hard acceleration

This function is responsible for the operation of the engine and if it signals, then there may be problems in the operation of this particular unit. Of course, this is scary for any motorist, because repairing the power unit is complex and expensive. But don’t immediately get scared and panic, the reason may be petty.

So, let’s look at what are the reasons why the “CHECK” function on the Lada Grant came on:

When the “CHECK” function lights up, it indicates that something is wrong with the engine and it is worth carrying out diagnostics before taking other actions.

Elimination methods

Let's consider some options for eliminating the causes of the “CHECK” function fire on the Lada Grant:

Engine 21116 (high-voltage wires, oil dipstick)

4 bolts securing the plastic fuel pump cover under the rear seat

The faults that you can fix yourself are indicated, but if nothing works, you should contact a car service.

Underwater rocks

If the “CHECK” light comes on on the Lada Grant, then do not panic. Often on cars the signal is supplied from a common ECU, which, like any computer, can malfunction. This may be caused by a short circuit or replacement of electrical circuit components. Therefore, errors occur in the electronic control unit, which can serve as a “CHECK” signal.

The ECU in Grant is not located very well, and if your check light came on during or after rain, then water could have gotten into it due to design features.

The ECU is located under the glove compartment

This problem can be treated quite simply. The ECU itself needs to be connected to a software laptop and errors in the system should be corrected or outdated firmware changed. It is best to entrust this operation to specialists who know how it is done.

Resetting an error without using an adapter (collective farm method)

If you are sure that the check engine light is “temporary”, that is, the quality of gasoline is poor, or the spark plug was faulty, which has already been replaced with a working one, then the check engine light can be reset manually without using an adapter; there are two ways.

How does a mechanic diagnose a P0363 code?

The mechanic will first visually inspect and, if necessary, repair or replace all loose, frayed, shorted, damaged or corroded wires, connectors and other electrical components. He will then clear the error codes from the PCM memory and test drive the vehicle to see if P0363 appears again. If the error code appears again, the mechanic will continue to diagnose. It will perform diagnostics until it finds a problem.