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:

CodeDescription and recommendations for elimination
1Malfunctions in the operation of the control module.
The unit is subject to more thorough checking for possible problems. Problems can be both hardware and software in nature. Before performing the test, it is recommended to clean the module connector and diagnose the integrity of all wires so that the signal from the device is correct.
2Malfunctions related to the functioning of the wiring of the fuel volume sensor in the tank.
The device may produce an incorrect signal, which is often due to damaged or clogged contacts on the block. It is necessary to diagnose the sensor and also check the integrity of the wiring.
4The control unit has detected an increase in the voltage level in the car's electrical network.
The problem may be due to a low battery (when the charge decreases, the generator runs faster) or a malfunction of the generator set. You need to check the voltage regulator relay. If the battery (rechargeable battery) is discharged, it must be recharged.
8Reduced voltage in the vehicle's electrical network.
The problem is solved in a similar way - by diagnosing the generator set and battery.
12Malfunctions associated with the operation of the diagnostic electrical circuit of the lamp on the instrument cluster
13The microprocessor module does not allow you to determine the pulse coming from the lambda probe.
The oxygen sensor is subject to diagnostics.
14The antifreeze temperature sensor sends too high a signal to the control unit.
The controller may not work correctly for the following reasons:
  • malfunctions;
  • clogging or oxidation of the connector;
  • wiring damage.

All elements are subject to diagnostics.

15Malfunction related to the coolant temperature sensor (coolant temperature sensor).
The controller needs to be checked because the signal from it is too high.
16Another error indicating high voltage in the vehicle’s on-board network
17Low voltage in machine wiring
19The control unit reported problems with the functioning of the crankshaft position controller.
The device is sending an incorrect signal. If the sensor is faulty, it may be difficult to start the engine. Sometimes the power unit does not start at all.
21Failure associated with the functioning of the throttle position controller; there may be problems with the operation of the unit itself.
If the sensor is faulty, the car engine may not operate correctly and power may be reduced.
22A low signal is sent from the throttle position controller to the control unit
23Incorrect pulse received by the microprocessor from the intake air temperature controller
24The speed sensor is malfunctioning.
If the controller fails, the speedometer will not function.
25An incorrect signal is being sent from the incoming air flow temperature controller
27, 28The control unit receives an incorrect pulse coming from the CO controller
33, 34Error codes indicating problems with the mass air flow controller.
You need to check the sensor wiring and the device itself. If the MAF (mass air flow sensor) is faulty, the engine may stall randomly and its power will be reduced.
35The microprocessor module recorded a deviation in idle speed.
You need to check the XX regulator and its connector.
41Incorrect signal supplied by the phase regulator. It may be too low or high.
42Malfunctions related to the electrical connection circuit of the electronic ignition system
43The control unit has determined that the knock sensor is inoperable; an incorrect pulse transmitted from the device is possible
44, 45Problems with the air-fuel mixture - too lean or rich
49Vacuum Loss Diagnostic Code
51, 52Malfunctions associated with the operation of one of the memory blocks - RAM (random access memory) or PROM (read-only memory)
53There is no signal from the CO sensor to the microprocessor. There may be a break in the electrical circuit or failure of the controller.
54There is no signal from the octane corrector sensor
55The engine control unit detects a lean mixture when the load on the car engine decreases
61Malfunctions related to the operation of the oxygen sensor. The lambda probe must be replaced.

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:

Error codeDecryption and recommendations for elimination
0030The microprocessor unit detected faults in the power line in the area from the oxygen controller to the neutralizer device.
Wiring and regulators are subject to diagnostics. Failed devices are replaced.
0036The power line of the second heating sensor has been reported to be damaged.
0102, 0103The mass air flow controller is faulty; the device is sending an incorrect signal.
It is necessary to check the integrity of the circuit and the regulator itself.
0112, 0113Problems have been detected in the functioning of the intake air temperature controller.
The wiring through which the device is connected, as well as the regulator itself, are checked.
0115-0118The coolant temperature sensor is faulty.
You need to look for the source of the problem in the device itself or its electrical circuit. Often the cause of the malfunction is due to liquid getting on the block to which the sensor is connected.
0122, 0123Problems with the operation of the TPS (throttle position sensor).
The throttle position controller is giving an incorrect signal. There may be interference in the electrical circuit if the line is damaged.
0130, 0131The oxygen controller has failed.
The device is subject to detailed testing and replacement if necessary.
0135-0138The oxygen controller heating sensor is giving an incorrect pulse or is faulty.
The device must be checked.
0300, 0302Misfire detected.
There can be many reasons for this problem. First of all, you need to check the operation of the spark plugs, as well as the high-voltage wires.
0301Another error indicating misfire in the cylinders of the power unit.
It is necessary to diagnose the compression level.
0325The knock controller is reported to be malfunctioning.
A possible reason is damage to the electrical circuit, then the wiring will have to be changed.
0335, 0336Problems related to the functioning of the crankshaft position controller.
The power line may also be damaged. If the wires are intact, you need to test the block on the connector or replace the sensor.
0341Malfunction of the camshaft position sensor.
The engine may not operate correctly with this problem.
0346Malfunctions in the functioning of the phase sensor
0363A microprocessor device detects misfires of the air-fuel mixture in the cylinders of the internal combustion engine (external combustion engine).
It is necessary to diagnose the motor in detail.
0422Failure of the neutralizing unit.
The device is subject to detailed diagnostics.
0443- 0445Malfunctions related to the operation of the adsorber sensor.
The problem is that the system is not purged. Controllers are subject to testing and replacement if necessary.
0480Malfunctions related to the operation of the power unit cooling fan.
If the device does not work properly, it will cause the engine to overheat. Often the reason is oxidation of the contacts on the terminal block through which the fan is connected to the power supply.
0501 – 0504There are reports of problems with the speed sensor.
The problem may be oxidation or clogged contacts on the controller located on the gearbox. Cleaning them may solve the problem.
0505 – 0507The microprocessor module reports problems in the functioning of the idle air control.
A sensor failure will cause the idle speed to fluctuate, which can cause the power unit to trip. It is necessary to check the operation of the device and the integrity of its electrical circuit.
0511, 1514These fault codes are associated with damage or a short circuit in the power line of the idle speed sensor.
It is necessary to test the operation of the controller and the integrity of the electrical circuit. A multimeter is used to diagnose the wiring; the damaged controller is replaced; it cannot be repaired.
0560Incorrect signal about the voltage level in the electrical network.
This value may be too high or low. The vehicle's battery and generator set are subject to diagnostics.
0606Processor failure.
You can try to delete the code from the control unit's memory. If after this the error remains, then the controller needs to be changed.
0607Incorrect operation of the knock sensor
0650Error code in the operation of the control power line of the control unit malfunction indicator
1303The microprocessor unit has detected a misfire of the combustible mixture in cylinder number 3.
It is recommended to quickly fix the problem, as it can lead to breakdown of the neutralizer device.
2020Problems have been reported with the intake flap controller.
The sensor is diagnosed and changed if necessary.
1617The sensor for detecting uneven road surfaces has failed, and the power line may be damaged.
1513A short circuit in the idle speed controller circuit is reported.
The electrical circuit is subject to diagnostics, and the contact elements on the block are also checked.
1578Incorrect operation of the throttle valve.
To eliminate the problem, it is recommended to clean the device or adapt it. To complete the task, you need to turn on the ignition for forty seconds and then start the power unit. To fix the problem, you can try to tighten the terminal elements on the throttle assembly.
1602Failures in the voltage supply were detected in the vehicle’s on-board network.
1621The microprocessor has detected problems in the operation of the computer's RAM.
It is necessary to carry out a full check of the control unit.
2135Malfunctions related to the functioning of the throttle.
If the damper is cleaned and the controller is operational, then the cause should be looked for in the control unit. The microprocessor may need to be re-flashed.
2187The air-fuel mixture in the power unit cylinders is too lean

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.

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