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.

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.

Basic error codes for VAZ 2114 injector: decoding

Note!

The table is also relevant for version 2115.

Exhaust system – 0000

• 30 – open circuit of the oxygen sensor heater to the catalytic converter;
• 31 – also with a short circuit to the car body;
• 32 – similar with a short circuit to 12V;
• 36-38 – the same value as 30 only for the output sensor.

Air line defects – 0100

• 102/103 – Mass air flow sensor open circuit or signal violation;
• 112/113 – sensor lines t ˚ overboard, impulse violation;
• 116 – engine overheating;
• 117/118 – damage to the DTOZH circuit;
• 122/123 – TPS line, short circuit or insulation failure;
• 130 – failure of the oxygen sensor in front of the catalyst;
• 131/132 – similar element, signal level violation;
• 133 – slow response of DK1 to commands;
• 134 – break in the power cable DK1;
• 136 – DK2 is broken;
• 137/138 – short circuit or violation of wiring DK2;
• 140 – fuse DK2 burned out;
• 141 – the heater of the same device is broken or damaged;
• 171/172 – excessively lean or enriched fuel mixture.

Error codes VAZ 2114 1.6 liters related to fuel supply - 0200

• 201/204 – break in the injector control line for all injectors in series;
• 217 – motor overheating;
• 230 – the fuel pump has failed or the corresponding relay has burned out;
• 261/264/267/270 – short circuit of the injector control circuit at +12 V, respectively, for each insert;
• 263/266/269/272 – failure or defect of the injector driver for each in series;
• 262/265/268/271 – Short circuit of highways to the car body.

Error codes on the VAZ 2114 on-board computer indicating a breakdown in the ignition system - 0300

• 300 – there are misfires;
• 301-304 – similarly for each cylinder, respectively;
• 326-328 – DDS is broken or there is no signal;
• 335-338 – failure, short circuit or interruption of the DPKV wiring;
• 342/343/346 – malfunction of the phase distribution sensor;
• 351-354 – open circuit for all pistons in series;
• 363 – the mixture in the cylinders does not ignite, emergency fuel supply cut-off.

Additional attachment that does not have a direct effect on the motor – 0400

• 422 – the catalyst may have clogged or the exhaust gas flow rate has dropped critically;
• 441 – failure of power supply to the adsorber purge valve;
• 444 – power failure above the specified element;
• 445 – short circuit of the gearbox to the car body;
• 480 – power wires to the main radiator cooler are damaged;
• 481 – failure of the coolant fan control circuit No. 2.

Failure, malfunctions in the SU speed control system – 0500

• 500 – speedometer sensor is broken;
• 506/507 – low or high speed of the vehicle;
• 511 – XX regulator – lines from the relay and ECU are interrupted;
• 560 – the battery is low or the power cable is broken.
• 562/563 – Short circuit on on-board wiring.

On-board network of auxiliary or main equipment – ​​0600

• 601 – ECM, ROM error;
• 615 – secondary starter relay, wiring damage;
• 616/617 – also with short circuit to ground or 12V;
• 627 – fuel pump control relay, possible line break;
• 628/629 – similar with a short circuit to the body or on-board system;
• 645-647 – compressor clutch, damage to the wiring with contact with the housing or other cables;
• 650 – the “Check Engine” lamp is broken, check the engine, there may be damage to the wiring;
• 654 – tachometer failed;
• 685-687 – malfunction of the main engine control relay, complete replacement of the part is required;
• 691/692 – problems with the main cooling fan relay.

Auxiliary systems – 1000

• 102 – breakdown of heater DK1;
• 115 – failure or malfunction of the above device;
• 123/124 – violation, too rich/lean mixture at idle;
• 127/128 – similar, only for partial load on the internal combustion engine;
• 135 – rupture of heating line DK1;
• 136/137 – incorrect fuel supply at low engine load, the throttle drive may be malfunctioning;
• 140 – discrepancy between measured and actual load;
• 141 – failure of heater DK2;
• 171/172 – incorrect information comes from the potentiometer;
• 301-304 – the ignition in the cylinder does not work correctly, consistently for all combustion chambers;
• 386 – incorrect sequence of testing the detonation channel;
• 410/425/426 – wiring of the canister purge flap, short circuit or line damage;
• 500 – the fuel pump relay line is damaged;
• 501/502 – similarly with a short circuit to the body or wiring;
• 509/513/514 – control center of the XX regulator, open or short circuit on board or 12V;
• 541 – damage to the wire of the BN relay, possible oxidation of the terminal;
• 570 – break in immobilizer control cables;
• 602 – no power to the ECM, oxidation of the pads is allowed;
• 606 – the bump sensor is broken, the part needs to be replaced;
• 616/617 – similarly with a change in signal level, there may be a short circuit inside the device;
• 2301/2303/2305/2307 - the ignition coils are shorted to 12 volts, in series for each piston.

Important!

Only the most popular error codes for the dashboard of the VAZ 2114 and similar models are listed here. There are other indices, but due to their low prevalence they are not mentioned.

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.

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.

Fault 1602

Most often, car enthusiasts encounter the P1602 encoding. It means problems in the electrical circuit of the vehicle. This error may be associated with the computer, broken wiring, or a malfunction of the computer itself.

The vehicle condition monitoring system constantly tests the battery, so often on a frosty morning the owner of a VAZ-2115 may encounter an unpleasant surprise on the display in the form of an error. With it, the car simply will not start. If you often encounter problems with P1602, then it makes sense to try to fix the problem by changing the firmware. Remember that you should only use official versions.

However, although the above situation occurs frequently, it is not the only reason for the indicated code to appear on the display. It is worth checking the car for the following problems:

• low voltage in the network (additionally, the sensors may also respond with errors);
• dead battery (in this case, the functions of the VAZ-2115 are blocked);
• short circuits in the wiring or broken wires in one of the sections of the circuit;
• increased load on the electrical circuit (occurs when installing powerful speakers and a subwoofer);
• problems with the generator, in which it produces insufficient current, which leads to constant use of the battery;
• failure of power grid measuring sensors.

Often the failure of various sensors leads to the fact that when you try to start the engine, the computer issues a dozen different codes. A malfunction in the operation of the on-board system itself also manifests itself. Moreover, in some cases, the car may simply not start, since errors do not simply transmit information, but prevent the engine from starting.

The best way to protect against the appearance of unnecessary codes is to change the on-board electronics software. However, it is important to use only official versions. Poor-quality firmware can easily destroy the entire electrical system of the VAZ-2115. It can send strange commands to all controllers at once. Therefore, do not try to do this work yourself; it is best to trust professionals if incorrect errors occur. At the service station you will be able to correctly configure the on-board computer.