During the operation of a domestically produced car, minor problems and breakdowns always arise. RPM floating is one of the common problems on fuel-injected cars. Problems with air leaks or insufficient fuel supply to the cylinders are detected through special scanners. The 2114 device has a connector for connecting an OBD scanner. With its help, error 0511 on a VAZ 2114 is easily detected. In this article we will look at the causes of this problem and how to fix it.
Useful video:
How does a mechanic diagnose a P0511 code?
When diagnosing this error code, a mechanic will do the following:
- Reads all stored data and error codes using an OBD-II scanner.
- Clear the error codes from the vehicle's computer and test drive the vehicle to see if the P0511 error code appears again.
- Check the idle air control valve PXX wires and connectors for damage.
- Check the idle air control valve PXX voltage.
- Check the throttle body for large amounts of carbon deposits (a greasy black substance that feels like a black substance) that has accumulated.
On which cars is this problem most common?
The problem with code P0511 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:
- Chery (Chery Amulet)
- Chevrolet (Chevrolet Spark)
- Chrysler
- Daewoo (Daewoo Matiz)
- Dodge
- Ford (Ford Maverick, Mustang, Ranger, Taurus, Escape)
- Geely
- Honda (Honda Accord)
- Hyundai
- Jeep
- Mazda (Mazda 3)
- Peugeot
- Toyota (Toyota Corolla, Echo)
- VAZ 2107, 2114, 2115
- Gazelle
- Lada Kalina, Priora
With fault code P0511, you can sometimes encounter other errors. The most common ones are: P0128, P0351, P0352, P0353, P0354, P0355, P0356, P0357, P0358, P0508, P0509, P0518, P0519.
Error 1602 - the battery is not working properly or the mains voltage is broken
One of the most popular errors on all VAZ cars is error code 1602. This code means that there are problems in the on-board electrical network, but sometimes it occurs simply due to problems with the on-board computer. The diagnostic system constantly tests the battery, so on a frosty morning you may receive an error code 1602 on your computer screen.
This error does not affect the operation of the engine in the VAZ 2110, but other cars may simply not start with it. If you regularly have this problem, you can solve it by installing different firmware. We strongly recommend using official versions of the software. The error code 1602 itself may mean the following problems and problems:
- low voltage in the on-board electrical network for a number of reasons (there may be additional errors in the sensors);
- dead battery and blocking of car functions (the problem was especially noticeable in the VAZ 2115);
- broken wires of the electrical system at a certain node and the occurrence of short circuits in the wiring;
- malfunction of the generator, insufficient current and constant use of the battery;
- too high load on the on-board system due to the installation of additional equipment (music, for example);
- failure of the sensors that are responsible for measurements in the on-board electrical network of your car
Unfortunately, the last option for the cause of this common code is one of the most popular. If sensors fail, the computer can generate a dozen error codes upon startup. Some codes are simply informative, while others simply prevent the engine from starting and block the operation of the on-board system.
Many buyers of VAZ cars initially install other software, eliminating almost all problems with factory equipment. This eliminates the possibility of problems associated only with the sensors. But today, not all problems of on-board computers of domestic cars have been studied. So there is no point in talking about complete protection against malfunctions of this unit. For Priora owners, we suggest watching a video about error code 1602:
Error P0504
This malfunction is associated with an incorrect signal from the brake pedal switches. Most often, the cause of such a failure is a malfunction of the brake pedal position sensor, lack of proper adjustment, or a broken spring that is installed in this device. Procedure for checking and troubleshooting:
Sensor locations on video:
Adjusting the brake pedal position sensor:
Any driver can carry out this procedure at home without a trip to a service station. The part has two nuts in its design. One of them is on top, and the second is on the bottom. The upper nut adjusts the pressure of the rod. First you need to release the lower one, and then tighten the upper one, thereby changing the gap of the element. You need to ensure that the rod is fully pressed and not partially pressed. After this, start the car and let it run for about 10 minutes to check if the error appears.
Errors in ME17.9.7 and M74 controllers
These types of controllers have their own system for displaying problems. There are fewer patterns here, but the information content is no worse than standard types of equipment. Diagnostics generate errors in a similar format; these controllers record only errors in the engine, gearbox, and electrical equipment of the vehicle.
It is not advisable to list all the codes for the ME17.9.7 and M74 controllers, since they can be found in the vehicle manual and in many open sources on the Internet. You just have to understand that these controllers allow you to perform quite adequate diagnostics with accurate results. However, it is not always possible to rely solely on computer diagnostic indicators.
Features of selection and preparatory procedures
It is important to mention here that in Largus with air conditioning you can purchase equipment from Renault Logan.
The platform is completely identical, so the filter cartridge will fit without problems. When the time comes for replacement, you should pay attention that there are fillers of different composition and structure on sale. You can find:
- With spongy tissue. The cheapest option. It costs on average about 600 rubles, does not do its job well and can tear even during installation.
- With multilayer polymer material. Such a sample will cost around 1000 rubles. More reliable and efficient.
- With carbon element. The highest quality and reliable model. Activated carbon traps all small particles, absorbs harmful toxins and fights unpleasant odors much longer than previous options.
Once you have purchased a cartridge according to your budget, there are a few things you should take care of before replacing it. Due to the difficult accessibility of the filter socket, for ease of installation you will need to move or completely remove the front passenger seat. It is also worth thinking about lighting (a regular flashlight will do) and a vacuum cleaner, since removing the old filter will cause a lot of debris to fall out of it.
Also, it is important to check whether the equipment is available in a particular Largus or not. Perhaps the previous owner installed it himself
The stub itself will be present in any case. But. If there is a filter, the slots will be clear and do not need to be further cut with a knife. If it is “deaf”, it means that there is no filter in the car yet. And it does not need to be changed, but installed. Installing a purification plant manually by craftsmen costs 2,000 rubles.
Other combinations
The errors described above are not the only ones. And in practice you can find a large number of different codes:
These are the most basic error codes. More detailed information can be found in the file that usually comes with the diagnostic program. All identified defects must be repaired. After which the errors are reset and a recheck is performed.
VAZ (LADA) errors via OBDI protocol. Self-diagnosis.
1 — Malfunction of the engine control unit.
2 — The voltage in the on-board network is too high.
3 — Malfunction in the electrical circuit of the fuel level sensor.
4 — Malfunction in the electrical circuit of the antifreeze controller.
5 — Error in external temperature controller.
6 — Overheating of the engine (power unit)
7 — Emergency oil pressure in the engine.
8 — The voltage in the vehicle's electrical network is too low.
9 — Low battery level (battery is discharged)
12 — Malfunction in the electrical circuit of the malfunction indicator located on the instrument panel.
13 — No data (loss of communication) from the oxygen sensor (lambda probe)
14 — High signal level of the coolant temperature sensor (antifreeze).
15 — Malfunction in the electrical circuit of the coolant temperature controller.
16 — Increased voltage in the vehicle’s electrical network
17 — Low voltage in the on-board network
19 — Malfunction in the electrical circuit of the crankshaft position sensor.
21 — Malfunction in the throttle position regulator.
22 — Low signal level of the throttle position sensor
23 — High signal level of the intake air temperature sensor
24 — Malfunction in the electrical circuit of the vehicle speed sensor.
25 — Low signal level of the intake air temperature sensor
27 — Incorrect signal from the exhaust gas system sensor
28 — Incorrect signal from the exhaust gas system sensor
33 — Malfunction in the electrical circuit of the air flow meter
34 — Malfunction in the electrical circuit of the air flow meter
35 — The ECU has detected a deviation in idle speed
41 — Incorrect signal coming from the phase regulator
42 — Malfunction in the electrical circuit of the electronic ignition system
43 — Incorrect signal coming from the knock sensor
44 — The mixture in the engine cylinders is too lean or rich
45 — The mixture in the engine cylinders is too lean or rich
49 — Vacuum leak
51 — Malfunction of one of the memory modules of the control unit - RAM or PROM
52 — Malfunction of one of the memory modules of the control unit - RAM or PROM
53 — Incorrect signal coming from the exhaust gas sensor
54 — No signal from the octane corrector regulator
55 — Poor air-fuel mixture at low load on the car engine
61 — Malfunction in the electrical circuit of the oxygen sensor (lambda probe)
E - Determining an error in a data packet stored in EEPROM
Diagnosis is easy
In addition to a computer check, it is worth conducting a car inspection
This will allow you to see damage to the body and pay attention to other shortcomings.
This is what you need:
- Check the level of technical fluids.
- Inspect the suspension and steering to identify play in time.
- Measure the compression, it should be between 9.5 and 11.
- You need to check the condition of the battery, and the voltage should be 12.7 - 13.5 V.
- You need to check how well the valves are adjusted. If one or more are jammed, a power supply error to the engine may occur.
- Do not forget about such important details as spark plugs and high voltages.
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Let's sum it up
If you own a VAZ car, then you are familiar with the incorrect operation of on-board computers. Often errors are issued for no reason at all, but they interfere with the normal operation of the power unit. Therefore, the best way to protect against most unforeseen situations with on-board computers is to change the software.
In this process, it is important to install the official version of the program without risking the viability of your car. There are known cases when unofficial software killed the entire electrical system of a car, sending incomprehensible commands and signals to all sensors of the on-board system. Also, the setup should be done by a professional. Have you had any problems with VAZ on-board computers?
DIY diagnostics of VAZ 2114
Domestic cars are not insured against malfunctions; owners regularly encounter breakdowns. It is worth noting that it is not always possible to determine a breakdown by eye. That is why it is recommended to carry out diagnostic work. Diagnostics will allow you to quickly identify sensor failure and electronics failure. It is clear that at first the car owner thinks about contacting the service. But is it necessary to overpay money when you can do all the work yourself?
So diagnosing a VAZ 2114 with your own hands is available to everyone. After all, each injection machine has a special connector. It is located on most models under the roulette column of the machine. In order to carry out the necessary work, you will need to purchase a special adapter.
It is worth noting that the adapter is inexpensive, especially if you compare it with the cost of computer diagnostics in the service. You can purchase the product at any auto store, but it is worth considering that it fits almost all Russian cars. In some cases, it can be used to diagnose foreign cars.
Symptoms of malfunction
The main driver symptom of P0341 is the MIL (Malfunction Indicator Light). It is also called Check engine or simply “check light”.
They can also appear as:
The vehicle will most likely run with this trouble code as it is often intermittent (flickering). And also because the ECU can often operate the car in “sluggish” or emergency mode. Even if there is a problem with the cam sensor signal.
Chery Amulet thermostat. Engine check
It's easiest with a thermostat. It is easy to check and easy to replace. But he can do just as much trouble. For example, when the thermostat valve sticks open, fluid circulates in a large circle, including the radiator. Because of this, the engine and heater take a very long time to warm up, if they warm up at all.
If it is stuck in the closed position, the engine will overheat. In this case, the antifreeze does not get into the main radiator at all, the temperature rises, the fans spin like crazy, but to no avail.
Let's do a simple check on the Chery Amulet engine. To do this, cool the engine completely, open the hood, and then start the engine.
It is much worse if the thermostat is stuck in an intermediate position, but more on this topic is written here .
Error P0504
This malfunction is associated with an incorrect signal from the brake pedal switches. Most often, the cause of such a failure is a malfunction of the brake pedal position sensor, lack of proper adjustment, or a broken spring that is installed in this device. Procedure for checking and troubleshooting:
Sensor locations on video:
Adjusting the brake pedal position sensor:
Any driver can carry out this procedure at home without a trip to a service station. The part has two nuts in its design. One of them is on top, and the second is on the bottom. The upper nut adjusts the pressure of the rod. First you need to release the lower one, and then tighten the upper one, thereby changing the gap of the element. You need to ensure that the rod is fully pressed and not partially pressed. After this, start the car and let it run for about 10 minutes to check if the error appears.
The error code does not match the problem - a common occurrence for VAZ
Considering the fact that the entire diagnostic system is built on fairly simple sensors, you should not expect accuracy from this option for testing cars. VAZ on-board computers often produce inadequate data that interferes with the operation of the car. This is especially often due to the use of analog components or other unofficial materials.
Maintaining and repairing your car today can be a real hassle if you only use official parts. They are sold at obviously inflated prices; not every driver is willing to pay a lot of money for factory parts. The reasons for strange error codes or information about known working nodes may be the following:
- failure only of the sensors of a certain vehicle component, and not the units themselves;
- bad fuel, which creates a lack of ignition and other engine problems reflected in VAZ error codes;
- clogged air and fuel filters, which can cause the most unexpected codes;
- independent firmware of the on-board computer with unauthorized software, which leads to changes in the subtleties of the power unit;
- Installing inappropriate parts may cause error codes to be constantly illuminated;
- a malfunction of the vehicle’s on-board computer system is the most common problem with issuing unexpected codes;
- installation of gas equipment and the lack of the necessary firmware for the computer will make operating the car completely impossible.
Such reasons are present today in almost every owner of a VAZ car. There is no desire to refuel at expensive gas stations while driving domestic vehicles. Despite the delicate “brains” and computer control systems, the Zhiguli engines perfectly digest any fuel without causing any physical problems.
Perhaps the manufacturer was in a hurry to install relatively modern diagnostic systems with hundreds of error codes, because reviews indicate maximum confusion when the codes are issued. The only benefit of such a diagnostic system is that the driver can find out in time about the presence of a breakdown in important systems of his vehicle.
