The VAZ-2114 should be called a relatively modern vehicle. It is equipped with a more efficient injection power plant. This system is quite simple and reliable. However, sometimes troubles happen to her, despite the fact that she practically does not need adjustment.
This circumstance often makes the owners of such a car forget about the need for regular maintenance.
Therefore, when the ECU suddenly produces certain error codes, they begin to panic.
First of all, you should know that error 0172 means that the air-fuel mixture is supplied to the engine too rich. The reasons for its occurrence on the VAZ-2114 will be discussed below.
Trouble Code P2188 – Idle Too Rich (Bank 1)
This diagnostic trouble code (DTC) is a generic powertrain code. Trouble code P2188 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 mainly concerns the value provided by the air/fuel ratio sensor, more commonly called the oxygen sensor (located in the exhaust). Which helps the vehicle's PCM (Powertrain Control Module) to control the amount of fuel injected into the engine.
Specifically, the PCM detects a rich mixture, which means there is too little air in the air/fuel ratio. This code is set for bank 1, which is the cylinder bank that includes cylinder number 1. This could be a mechanical or electrical fault, depending on the vehicle manufacturer and fuel system.
Troubleshooting steps may vary depending on the manufacturer, fuel system type, mass air flow (MAF) sensor type, and wire colors. And also a type of air/fuel/oxygen ratio sensor (AFR/O₂).
Reasons for the appearance of symptoms of error P2135 on the Lada Granta
On different cars, with different numbers of sensors and different control units, the reasons may be slightly different. Although in almost any case, an intelligent diagnostician will first of all consider this number of reasons:
Electronic throttle valve circuit
In relation to the Lada Granta, we can safely consider problems with angle sensors or damage to the ECU, oxidation of contacts, as well as failures in the module firmware. However, if error P2135 on a Lada Granta appears in the company of codes P012%, P022%, P1538, where % is any number, you can safely blame the throttle assembly.
Standards
On average, the correct ratio of air to fuel is 15 kilograms to 1. When:
- more oxygen is supplied than normal - the mixture is called lean;
- if there is more gasoline - rich.
In some cases, the proportion is violated, but control over it is entirely the prerogative of the ECU; it receives data from different sensors. Problems with a lean mixture are indicated by a noticeable decrease in fuel consumption against the backdrop of a drop in engine power.
If too much gasoline enters the injector, then you will have to refuel more often. At the same time, there are several rather dangerous nuances that cannot be discounted under any circumstances.
How to Troubleshoot or Reset Trouble Code P2188
To troubleshoot and correct trouble code P2188, check the air/fuel ratio/oxygen sensor (AFR/O₂). If it consistently indicates that the engine is running rich, identify all the options that could cause the engine to run rich. These include:
All other codes must be diagnosed before the fault can be determined. Because problems that cause other codes to output can also cause this code to install.
Site about off-road vehicles, SUVs, off-road vehicles
The electronic control unit of the ZMZ-409 UAZ Hunter engine has a built-in controller on-board self-diagnosis system, which has the ability to diagnose sensors and actuators and is capable of identifying most faults in the fuel injection system, as well as identifying faults in the controller itself.
The on-board self-diagnosis system clearly shows visual alerts about its operation using the orange engine malfunction warning lamp located on the dashboard warning lamp block.
On-board self-diagnosis system of the ZMZ-409 engine controller and its operating principle.
Under normal conditions, with the ignition on and the engine not running, the warning lamp turns on for 0.6 - 1 second and goes out if the self-diagnosis system has not detected any faults in the electrical circuits of the engine control system.
If any malfunction occurs before starting or during engine operation, the controller (ECU) enters its code into its RAM and signals this by turning on a lamp, which lights up when a malfunction occurs and remains on continuously until it is eliminated.
The detection of a malfunction by the on-board self-diagnosis system and, accordingly, the warning lamp turning on does not mean that the car’s engine must be immediately turned off. In most cases, the electronic control unit, if possible, immediately forcibly switches the engine to one of the reserve operating modes prescribed in it, which it considers as close as possible to normal in a given situation.
However, operating the engine in such reserve modes, even short-term, can lead to increased fuel consumption, exhaust toxicity and deterioration in vehicle performance. In addition, there are some restrictions when engine operation is allowed only after the malfunction has been completely eliminated.
For cars with a ZMZ-409 engine of environmental class 2.
In case of a malfunction caused by misfires, interruptions in engine operation and jerking when the car is moving, in order to prevent failure of the exhaust gas converter, it is necessary to quickly, within no more than 30 seconds, stop the car and turn off the engine.
For cars with a ZMZ-409 engine of environmental class 3.
If there is a malfunction caused by a misfire, the engine warning light starts flashing. In order to prevent failure of the exhaust gas converter, it is necessary to reduce the engine speed to 2500 rpm, the vehicle speed to no more than 50 km/h, and drive to a service station. The control lamp will light up continuously when the permissible temperature of the neutralizer is exceeded. In this case, it is possible to turn off one or two engine injectors.
Service
Engine maintenance is expected after 15,000 km. On automobile forums, the question is often asked: how much oil does the engine hold? So, the engine holds 7 liters of engine oil, but when replacing it will only require 6 liters.
The maintenance card is no different from 409, and looks something like this:
- 1000-2500 km or TO-0: oil and oil filter change.
- 8000-10000 km - TO-1: oil change, oil and air filters, spark plugs, high-voltage wires, fuel.
- 25,000 km - TO-2: oil change, oil filter.
- 40,000 km - TO-3: oil change, oil and air filter, spark plugs, high-voltage wires, valve adjustment.
- 55,000 km - TO-4: oil change, oil filter, fuel filter, timing chain and alternator belt replacement.
- 70,000 km - TO-5 and subsequent: oil and oil filter change. Every 20,000 km the fuel and air filters are changed and the valves are adjusted. Every 50,000 km, replace the timing chain.
Diagnosis and problem solving
The first step is always to check the technical service bulletins (TSB) for your specific vehicle. Your problem may already be known with a known fix released by the manufacturer. This can save you time and money during diagnosis.
Next, locate the air/fuel ratio/oxygen sensor and mass air flow sensor on your specific vehicle. Once found, visually inspect the connectors and wiring. Look for scuffs, scuffs, exposed wires, burn marks, or melted plastic.
Disconnect the connectors and carefully inspect the terminals inside the connectors. See if they look rusty, burnt, or otherwise damaged. You can buy electrical contact cleaner at any parts store if you need to clean the terminals.
If this is not possible, use rubbing alcohol and a light plastic bristle brush to clean them. After that, let them air dry, take dielectric grease and coat the contacts to protect them.
If you have an OBD2 scanner, clear the diagnostic trouble codes from memory and see if the code returns. If it doesn't, it's likely a connection issue.
Sensor check
If P2188 returns, you will need to check the MAF sensor voltage signal on the PCM. Monitor the MAF sensor voltage on a scan tool.
If a scan tool is not available, check the signal from the MAF sensor using a digital volt-ohmmeter. With the sensor connected, the red wire of the voltmeter should be connected to the signal wire of the mass air flow sensor. And the black wire of the voltmeter must be grounded, that is, go to ground.
Start the engine and monitor the input signal from the mass air flow sensor. As engine speed increases, the mass air flow sensor signal should increase.
Check the manufacturer's specifications as there may be a chart telling you what the voltage should be at a given RPM. If this fails, replace the MAF sensor and try again.
In conclusion
If after the reset procedure these error codes reappear, it is recommended to contact a specialist for a more thorough diagnosis of the LADA Kalina on-board electronic complex. This will save not only the owner’s nerves, but also provide a qualified approach to troubleshooting, without aggravating the situation with “independent actions”.
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actually viburnum, 2011. 1.6 8kl. P0172. air consumption at idle is 7.5-7.7 kg/h. the voltage on both DCs is 0.89V. When you press the gas, the voltage changes.
What? Catalyst? DK? Mass air flow sensor?
It seems like there are no more options?
It could be that the air filter is clogged. ¶
Malfunction in the mass air flow sensor (MAF). There is no connection, either poor or damaged, between the controller and the sensor itself. The ignition wires are poorly connected to the engine block, in other words there is no >. The oxygen sensor, in our case the control sensor (UDC), has degraded. (With)
Below, we’ll look in detail at what needs to be done to identify one or another reason why error P0172 appeared.
Error P0172, troubleshooting the cause:
We connect the tester to the diagnostic connector. We start the engine. Using DST-2M, we measure FR. If FR > 0.8, error P0172 is intermittent. If the FR parameter is less than 0.8, then continue. We stop the engine. We carry out a thorough check of the filter element, namely, we check the air filter for severe contamination. If found, we replace it, more details: Removing and replacing the air filter. Also, you need to make sure that the throttle and intake pipes are in good condition. After checking and eliminating, if any malfunctions are found, we begin the diagnostics again, returning to point No. 3. So, the air filter is clean, no obstacles to the passage of air were found, let's move on. We start the Lada Kalina engine again. Using the table, we compare the following values obtained by the device: NMOT, ML, MOMPOS, RL, DMLLRI, FR, DMDVAD.kod-oshibki-P0172 No faults detected?! great, let's move on. Otherwise, we check the idle air regulator. Using a signal splitter, we disconnect the signal (output) circuit of the mass air flow sensor. Using point No. 3 as an example, we measure FR. If FR is significantly less than 0.95, or more than 1.05, then the mass air flow sensor will need to be replaced. After carrying out the repair work, we return to No.3. Otherwise, when the FR value is not in the above range, go to step 7. At this stage of identifying error P0172, you need to make sure that the fuel pressure and injector balance are normal. proverka-forsynok Fig 1. Table for checking the balance of injectors.
If a malfunction is detected, we carry out repairs and return to the third point. Otherwise, the faulty UDC was to blame for error code P0172. It should be replaced, in more detail: Then re-do the diagnostics, starting from point 3. (With) ¶
Trouble P2135 and Engine Control Module
Where is the ECU located on the Lada Granta? That's right, at the feet of the front passenger. Where does water accumulate the most in winter, autumn and spring? That's right, at the feet of the front passenger.
Most of the water in the cabin can accumulate precisely at the location of the ECU.
In addition, water can enter the Granta's interior in other ways. Using the Lada Vesta as an example, we recently examined this problem.
If the engineers could not provide a safer place for the ECU, then they could at least protect the control unit from water. But they didn't do it. Therefore, a common problem in many Grants is the incorrect operation of the electronic control unit due to short circuits caused by corrosion and salts.
If we feel that the carpets under the front passenger are saturated with moisture, most likely the ECU has begun to suffer from water. We remove the terminal from the battery, the glove compartment cover and take out the control module.
If there is even a drop of moisture on it, we disassemble the case and thoroughly dry the board with a hair dryer at low temperature.
When the board is dry, we assemble the control module with sealant and think about protecting the interior from water ingress or moving the electronic control unit to a safer place.
Diagnostics using the dashboard
It is advisable for the owner of the Russian model we are considering to remember all the error codes that may periodically occur in the system. In addition, it is recommended that you learn how to diagnose the dashboard yourself. It is designed to reflect error codes that occur in the electronic components of the Lada Kalina.
To start the diagnostic process, you will need to press a button that records the daily mileage. While holding it, turn on the ignition by turning the appropriate key. If this manipulation is performed correctly, the arrows on the scales of the speedometer, tachometer and auxiliary indicators will begin to move along a circular path, moving from the initial to the final position.
Upon completion of this movement of the arrows, the owner will need to switch the screen to another mode. This will be done by a special button located on the wiper switch under the steering wheel. Pressing displays a picture with performance indicators of a wide range of devices controlled by the ECU. The software version of the complex is also displayed here - self-diagnosis.
After updating the information three times, the error codes themselves appear on the device, expressed in digital form.
Let's look at the list of errors by number:
The “E” symbol deserves special attention, which indicates the presence of errors contained in the “EEPROM”. Each malfunction, including error 4 and error 8, requires attention from the car owner.
Deciphering codes, checking devices
Mistake No. 2. Overvoltage. Error No. 3. An error has been detected in the fuel sensor level; it occurs if the circuit is broken.
Error No. 4. Coolant temperature sensor error. Error No. 5. The outside temperature sensor has failed. Error No. 6. The motor has overheated. This happens if the engine overheating alarm is triggered. Mistake No. 7. Oil pressure is in poor condition. Happens if the alert bell is triggered. Mistake No. 8. Problems with the brakes. Happens if the alert bell is triggered. Mistake #9: The battery is dead. Happens when the alert bell is triggered.
To reset all types of errors, press and hold the reset button until all data on the display is cleared. Testing of devices and their combinations is carried out in accordance with technical specifications using special equipment (pulse generator, from a stable power source, etc.). If a short circuit suddenly occurs in existing devices (less than 40-50 Ohms), the maximum temperature indication must prevail.
The devices operate from an electronic module, which receives signals from various sensors. The tachometer and speedometer are powered by stepper electric motors. The electrical instrument cluster cannot be repaired. The daily mileage of the car can be set on the 0 key, which is located on the right. The meter and its readings are saved when the battery is disconnected. That's all. Good luck!
How does the self-diagnosis complex work?
This system is self-regulated in automatic mode. Its structural composition includes several electronic devices. Based on sensor impulses, a variety of information flows into the ECU memory, among which there are faults. They are presented in the form of designated fault codes. Car manufacturers do not support the idea that owners are inclined to independently maintain electronic systems of cars, therefore they tend not to disclose the meaning of the codes. Here we can see the noble motive of the developers, because they understand that in this way scammers can take advantage of the situation and change the settings of the electronic module, for example, reduce the odometer readings before selling the Lada Kalina car, etc.
This situation forces the manufacturer and dealers to persuade owners to service the self-diagnosis system in specialized services.
A particularly important component of this system is the on-board controller. With its help, information collected from sensors is processed and displayed on the display. Lada Kalina does not have such a device, which deprives the owner of the ability to visually read information regarding breakdowns. This is where scanning equipment comes to the rescue. Thanks to it, self-diagnosis occurs.
P2188 error UAZ Patriot
Ulyanovsk-made cars are equipped with an ECU from the factory, which allows you to calculate various faults and display them on the on-board computer display. But UAZ Patriot SUVs are not equipped with them from the factory, but you can add this device to your car right in the showroom when purchasing a car. For the UAZ Patriot SUV, two types of on-board computers are available from Prestige and Multitronics.
The Prestige U12 model is produced directly for UAZ vehicles, so installing it yourself is not very difficult. You can find out how to do this yourself in the article about installing an on-board computer. In this material we will look at the main types of ECU errors of the UAZ Patriot SUV, which are displayed on the display of the on-board computer U12 or an analogue.
Why is error 8 associated with brake system problems?
Some car enthusiasts misinterpret error message 8, believing that they need to check the brake system. This is due to the fact that on VAZ cars this fault number indicates insufficient brake fluid level.
The Chevrolet Niva's on-board computer uses different designations, so you should not interpret them in the same way as in the VAZ. If you doubt the condition of the brake system, you can check it during the repair process. First of all, pay attention to the brake fluid level, and then check the pads.
Purpose of the on-board computer
An on-board computer is a device through which information received from the vehicle's ECU is displayed on the device's display in a form understandable to humans. Thus, we can say that such devices of the Prestige U12 brand are a universal auxiliary device that helps to read all useful information about the technical condition of the car and more.
Using the on-board computer, you can find out such important parameters as the number of liters of fuel in the tank, crankshaft rotation speed and many other information. But, in addition, Prestige U12, which is installed on the UAZ Patriot independently, allows you to read all errors in the electronic and mechanical systems of the car. If there is no on-board computer, such errors are displayed on the instrument panel and are indicated by the Check Engine indicator. In this case, the car owner should rush to computer diagnostics to clarify the malfunction and eliminate it. With the advent of the Prestige U12 on-board computer on the UAZ Patriot, there is no need to visit a service station where computer diagnostics are carried out. All codes are displayed on the display in digital format, and the owner will need to find out the decoding of this error and, if possible, eliminate it. Although in most cases the codes that arise are not significant, if they are not cleared, some components of the car may not function.
In this material we will look at the main types of errors displayed on the monitor of the Prestige U12 on-board computer and find out how to eliminate them.
Error codes
To find out the decoding of the codes that were detected by the ECU and displayed on the monitor, you need to go to the “TO” menu and select the section called “Errors/Diagnostics”. After going to this section, you can read error codes, view their number, reset and other types of manipulations.
Let's look at the main types of errors that the on-board computer display receives from the ECU.
Code 04
The category of errors related to series 04 imply a malfunction of the following systems and units:
These codes from category 04 are the most common, most of which require physical elimination. Error 0420 can be resolved by resetting it in the corresponding menu of the on-board computer. After the reset, error 0420 will not appear on the screen of the Prestige U12 on-board computer, but the catalyst will no longer cope with its original functions.
Codes from series 03 indicate problems in the ignition system of the UAZ Patriot. The following error codes from this series are encountered:
The most likely culprit for error 0340
In rare cases, code 0340 indicates a sensor failure, but if after cleaning the contacts the error does not disappear, then the device should be replaced with a new one.
Series 01 codes
Codes from the 01 series occur due to a malfunction of the following sensors: coolant temperature sensor, DTV, mass air flow sensor and others. More than ever, the Prestige on-board computer often displays error p0106 on the screen. This code p0106 occurs very often, so special attention should be paid to its characteristics and how to eliminate it.
So, when the on-board computer shows error p0106, then, most likely, the driver discovers that the car is no longer driving the same way as before. The essence of this p0106 value is the malfunction of the air pressure sensor in the intake manifold. The reasons for this error to appear are as follows:
Code 0704
The appearance of an error on the monitor of the on-board computer type p 0704 of the UAZ Patriot SUV indicates problems with the clutch switch. What does this mean? This means that there are problems with the clutch pedal limit switch, as a result of which the ECU reads the error and transmits it to the display. The causes of malfunction of the clutch pedal limit switch are few and often involve a weakening of the tension spring. To eliminate the malfunction, you should find the limit switch located on the clutch pedal and identify the exact reason for the lack of signal from the product.
The trailer looks like this:
Code c3472
Error c3472 on the UAZ Patriot SUV occurs due to a malfunction of the camshaft position sensor. To eliminate the malfunction, it is necessary to check the timing of the timing, the integrity of the suitable wires, and if this does not help, then replace the camshaft and crankshaft sensors with new ones, after which the code should disappear.
At this stage, we should summarize and say that if you have installed an on-board computer on your car, then you should also take care of printing out on paper all the popular error codes. After all, now you will have the opportunity to independently identify errors and find out how to solve them, even on the road, without resorting to the help of a car service.
Author Guest _A_V_P_, November 19, 2010 in Domestic auto industry GAZ, UAZ
Other signs
Of course, there are many reasons for excessive fuel consumption. But usually the first sign here is code P0172.
There are also a number of other signs of a problem:
- Loud pops are heard from the muffler;
- the smoke coming out of the chimney is black or dark gray;
- power is lost.
Noisy exhaust occurs more often at high speeds. The reason is that the fuel does not burn completely and is therefore discharged along with the gases to the outside. However, in its path there is a muffler that does not allow fuel to pass through, so it accumulates in it and explodes when it reaches a critical mass. As a result, there is a risk of destruction of the muffler itself or the resonators.
Blackish smoke comes out due to the fact that the combustion of gasoline residues occurs in the exhaust system, where the products formed during ignition are not filtered.
The loss of power is due to slow and incomplete combustion of fuel. As a result, it literally floods the candles, which leads to the loss of spark and, accordingly, to an even worse situation. In this situation, the piston does not receive a normal push and a decrease in power occurs. Sometimes this indicator is restored for some time after the car is driven at high speed, but usually the improvement does not last long.
Under such circumstances, gasoline consumption cannot but increase. The presence of a malfunction in the system does not prevent fuel from flowing into the engine, but it is used there with very low efficiency. A significant part of it is simply thrown into the wind, and in the literal sense.
