Deciphering and eliminating errors on the VAZ 2114 - independent diagnosis of all faults

Car self-diagnosis

The self-diagnosis procedure is performed as follows:

1. When the ignition is turned off, the odometer daily mileage reset button is pressed.
2. Then the key is installed in the switch and turned. It is rotated to the first position to activate the ignition system.
3. After turning the key, the mileage reset button is released. The arrows on the speedometer, tachometer, fuel and engine temperature gauge will begin to move from the minimum value to the maximum.
4. The daily mileage reset button is pressed again. An inscription with the board firmware version will be displayed on the instrument cluster.
5. The button is pressed again. After this, VAZ 2114 error codes will begin to be displayed on the dashboard screen.

Deciphering the VAZ 2114 self-diagnosis error codes will help you identify vehicle malfunctions and understand what actions need to be taken.

The channel “Your Own Mechanic” talked about carrying out a self-diagnosis procedure on a VAZ 2114 car.

Resetting the "Check Engine" error

If the trouble codes have been corrected, you need to erase the Receipt from the ECU (electronic control unit) memory. Otherwise, the indicator will light up on the dashboard when there are actually no errors.

Step-by-step instruction:

1. The ignition is activated, but the car engine does not start.
2. The engine compartment of the car opens. Use a wrench to loosen the bolt that secures the terminal clamp to the negative terminal of the battery.
3. Then you need to wait about a minute, then the battery terminal must be connected back.
4. The engine compartment of the car is closed and the ignition is turned off.
5. Then the power unit of the machine is started.

If the Check indicator continues to light, then you need to wait a while, it should disappear on its own. If the Check Engine light does not disappear from the dashboard, we can conclude that troubleshooting has not been performed.

User Ravil Shayakhmetov showed the procedure for independently removing the Check error from the dashboard of a VAZ car.

How can I reset errors myself?

To delete the data remaining in the memory of the control unit, a repeated self-diagnosis of all systems is performed. Once error codes are displayed, the information is recorded. Pressing the daily mileage reset button again will delete the fault data from the ECU memory.

The Glaz Szalg channel spoke in detail about resetting errors in VAZ cars.

VAZ 2114 malfunctions: error codes

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The presence of an on-board computer on a car allows you to identify faults in a timely manner and take appropriate measures before the breakdown becomes serious and expensive to fix.

VAZ 2114 car

The main thing here is to be able to correctly read error codes when diagnosing a VAZ 2114. Not everyone understands what exactly the car is indicating when issuing certain designations. Therefore, today we will try to talk about the most common error codes and note what each of them means.

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Self-diagnosis

Let us immediately note that the result of do-it-yourself diagnostics in your own garage and at specialized car services is somewhat different. Service stations have at their disposal all the necessary equipment, with the help of which the maximum number of error codes is calculated from the on-board computer of your car.

On-board computer

Self-diagnosis with your own hands will allow you to achieve a certain positive result. But alas, it is possible to detect all errors in extremely rare cases.

Nuances of self-diagnosis

Indications for self-diagnosis and contacting specialized service stations will be different, error codes are also displayed differently. Therefore, today we will consider two options.

It is not at all necessary to use the on-board computer to diagnose problems with the car. Not all VAZ 2114 owners know about this method, so we will definitely tell you about it.

It consists of the following steps.

1. Sit in the driver's seat and hold down the odometer button.
2. Then turn the ignition key to the first position.
3. Release the odometer button. After this, the arrows will start moving.
4. Press the button again and turn it off. This will allow you to see which firmware version is used in your case.
5. Press and release the button a third time. So you will see codes indicating the presence of certain errors in the operation of the car.

Since this is not specialized equipment, the codes will be presented in this case as two-digit designations, rather than four-digit ones.

Let's now look at the most popular errors that occur during such diagnostics and figure out what the code means. Even without an on-board computer, you can detect faults on the VAZ 2114 using the odometer codes.

We suggest you familiarize yourself with them in the table.

It is important to take into account the fact that mistakes can add up. For example, if your car has faults indicated by codes 4 and 1, the odometer will show the number 5.

Plus, all fault codes will be stored in memory until you manually reset them. To do this, you need to disconnect the terminals from the battery while keeping the ignition on, wait a few seconds and connect it back. Don’t forget to do this, especially if you are going to go to a service station for diagnostics. They will find these errors and will eliminate them, although in fact you have already done everything yourself before. Pay extra money? No, it's not worth it.

Meaning and interpretation of error codes

Error codes in the form of one and two-digit numbers:

Self-diagnosis codes sometimes add up. For example, error 6 can be the sum of 2 and 4, and fault 9 can be the sum of 1 and 8.

Combinations of problems when performing computer diagnostics are displayed in four-digit form:

The author Igor Belov spoke in detail about ways to help decipher car fault codes.

Determining and decoding errors on the VAZ 2114

Self-diagnosis of a car allows you to identify faults, but some of them are rarely identified. An odometer is used for diagnostics.

Self-diagnosis of VAZ 2114

The sequence of actions is as follows:

1. Press and hold the odometer button and turn the ignition key to the first position.
2. Release the odometer button and press briefly again. As a result, the firmware version will be displayed.
3. Now, to see the error codes, you need to press and release the odometer button again.

Error codes are in the form of numbers from 1 to 9 and two-digit numbers, unlike those displayed by the on-board computer. Thus, you can use the odometer to identify some car faults. The most common errors are shown in the table below.

Error codes for VAZ 2114 injector 8 valves: table

Diagnosis of faults using special equipment

To identify faults, service stations usually use the car’s on-board computer and a laptop with specialized applications. In this case, it is possible to obtain error codes that correspond to various problems. The most common of them are shown in the table.

If errors occur with other codes, you should read the information about them in the file that comes with the car diagnostic application, or search on the Internet.

The controller clears the memory after turning off the engine with the ignition and disconnecting power from the battery for 10-15 seconds. In this way, you can determine after repair whether the malfunction has been eliminated.

Errors in the VAZ 2114 occur quite often, so the ability to recognize them will not be superfluous to carry out proper car repairs. For correct diagnosis, you will need a computer with a special program and an understanding of the on-board computer readings.

What are the errors that indicate a faulty phase sensor?

There are two error codes that indicate a faulty phase sensor:

• 0340;
• 0343.

Symptoms of problems will be as follows:

• the car moves jerkily, and the driving speed noticeably decreases;
• the power of the power unit decreases, in some cases the car cannot pick up speed above 60 km/h;
• the engine stalls when the gear is in neutral, for example, at traffic lights;
• the dynamics of the power unit decreases, shocks during acceleration, pops in the exhaust system;
• The ignition spark may completely disappear, as a result of which the car engine will not start.

Error code 0340

Error code 0340 indicates a faulty phase controller. The camshaft sensor needs to be checked for functionality. Sometimes error 0340 is associated with problems with the crankshaft position controller. The malfunction may be caused by the fact that the timing belt (gas distribution mechanism) has slipped by one tooth.

Error code 0343

Combination 0340 indicates an increased signal coming from the phase sensor. If the controller is working properly, then the contact elements on the device connector are subject to diagnostics. Perhaps the problem lies in their damage or oxidation. It is necessary to clean the contacts and ring the power line. There should always be a 12-volt voltage at the controller terminal (element A), and 0 at the other contacts.

The channel “In Sandro’s Garage” talked about troubleshooting a problem related to the operation of the camshaft sensor.

Decoding codes

Next, we will look at the most common codes encountered during diagnostics of on-board computers of VAZ 2114 cars. Of course, on-board computers are also electronics, and they can cause certain failures, such is the specificity of their operation. However, often the fault codes displayed by the on-board computer are still true.

Description of the error

We will not consider all codes without exception, but especially for our readers we have selected errors that occur most often when diagnosing VAZs.

We have presented to your attention the most common combinations of codes found when diagnosing VAZ cars.

Diagnostics using special equipment

If you resort to a verification method using special equipment, you will need a computer on which diagnostic software is pre-installed.

The necessary software (programs) is downloaded from the Internet:

1. "Uniscan". A series of “software” used for diagnostic testing of almost any cars from major manufacturers (USA, EU, Japan, Korea) manufactured no earlier than 2001.
2. “Motor Tester”. A powerful semi-professional program with which you can diagnose many Russian-made cars (VAZ, UAZ, GAZ, etc.).
3. “Vagcom” and “Vag Tool”. Two programs for diagnosing machines related to the so-called. VAG group (Volkswagen-Audi group). Allows you to work with brands such as Audi, Seat, etc.

To connect to the diagnostic output, you will need a wire with an adapter. One end of the cable is connected to the header, and the other to the USB input on the computer or laptop.

For diagnostics, perform the following steps:

1. A detailed inspection of the car is carried out. The car owner checks the availability of consumables. This can be brake fluid, engine and transmission oil, and antifreeze.
2. The diagnostic output is searched for and a computer is connected to it. The ignition system in the car is first activated by turning the key in the lock to the appropriate position. The engine should not start. If there is a special scanner, then instead of a computer, this equipment is connected to the diagnostic connector.
3. Then the diagnostic software is launched. Depending on the developer, the utility interface may differ. In many programs, when launched, graphs or technical parameters of the car with numbers appear.
4. The car begins checking for errors; to do this, press the corresponding button in the program. At the end of testing, the utility displays error codes.