On Lada cars produced in 2001 - 2007 and subsequent ones, the manufacturer installs a BC capable of performing a self-diagnosis procedure. Thanks to this, the motorist can independently read the fault codes of the VAZ 2112 and determine the presence of a breakdown. Errors are reflected on the instrument display in the form of one or two-digit codes. The disadvantage of the procedure is the lack of an accurate determination of the location of the breakdown - self-diagnosis is only capable of a general determination of the circuit. Faults can also be read using additional equipment. The connected scanner provides detailed information about the specific location of the breakdown.
Decoding error codes on the instrument panel of the VAZ-2112
Car : VAZ-2112. Asks : Maxim Perepelkin. The essence of the question : How to decipher error codes on the instrument panel of a VAZ-2112?
Good day, please help me understand my situation, and more precisely, the error codes on the instrument panel . No matter how much I try, nothing comes of it, everything is somehow too complicated for me, I don’t understand the Internet well enough to find it, but then a friend recommended your site, they say you will find everything there and if you need anything, they will personally help you.
So I decided to ask this question, I hope for a complete schedule of each code and what it is responsible for, so that I could look at it, so to speak, and understand what’s what, and not sit like I did and think, what the hell is this and why. Traveling constantly for diagnostics turns out to be very expensive, thanks in advance.
Oxygen sensor
For some reason, it is quite difficult to find code 0525 in the decoding tables, but this is simply an error in the oxygen sensor, otherwise called a lambda probe. And if you see 0525 on the display again, it means that not everything is in order with the oxygen content in the exhaust.
This sensor is not installed on all VAZ models; it sends a signal to the engine regarding how much oxygen should be in the fuel system. That this sensor does not cope with its duties is evidenced by:
- increased fuel consumption;
- unstable work at XX;
- loss of power, lack of "response".
New Bosch lambda probe
In principle, the lambda probe should be changed after about 60 thousand mileage, but this can happen earlier, especially considering the quality of our gasoline. Therefore, it may display 0525, warning that it is time to replace the oxygen sensor.
Excerpt from open sources
2 - Excessive voltage. 3 - Fuel level sensor error*. 4 — Coolant temperature sensor error*. 5 — Outside temperature sensor error**. 6 — Engine overheating***. 7 - Emergency oil pressure***. 8 - Brake defect***. 9 - Low batteries***. E - Recognition of an error in a data packet stored in EEPROM.
Note: * – an error is registered if within 20 seconds. a sensor break is detected; ** – an error is registered if within 20 seconds. The actual sensor data is not recognized (indication on the LCD is “— °C”); *** – accompanied by an acoustic signaling device.
Source
Electrical equipment
Malfunctions of the electrical equipment of the VAZ 2110 should be responded to as quickly as possible. By the way, this can be signaled by code 1602, although its decoding sounds like a loss of on-board power supply voltage in the RAM.
Sometimes it is enough to reset error 1602, and it will not appear again. Some people call these numbers “good”; 1602 may appear after the battery is disconnected, due to a voltage surge when starting the engine (for example, in cold weather). However, if 1602 “pops up” constantly, you need to look for a network break.
First, try to clean the battery terminals and secure them well. Did not help? Check the circuit, starting from the “+” of the battery, be sure to check the fuse, fuse link.
Oxidized battery terminals
And also inspect the mass of the ECU, TPS. There are cases when code 1602 appears due to the fact that the security alarm blocks the controller circuit, and it issues this as an error every time. You should contact the installer of your alarm system.
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
Source
Prevention of breakdowns of electrical appliances
To prevent breakdowns of electrical circuits, you must follow a number of simple rules.
- Periodically check the contact connectors for oxidation or overheating. Rust disrupts the passage of impulses, which can be read by instruments as damage to the unit.
- Once a year, treat contacts with special oils. Lubricants prevent moisture from entering metals, which prolongs their service life.
- Replace dry wires in a timely manner. Cracked insulation can cause a short circuit.
Error Diagnosis Methods
In 2022, errors on the VAZ 2110 on-board computer can be identified in two ways.
Self-diagnosis VAZ 2110: error codes
To enable self-diagnosis mode, the driver or technician will need to perform a certain sequence of actions.
If everything is done correctly, one of the following symbols will light up on the device:
Also, error 14 VAZ 2110 or another two-digit number will indicate the presence of two problems. Usually, with such a picture, the ciphers are summed up. For example, error 10 VAZ 2110 may indicate problems in circuits No. 4 and 6.
How to reset errors on a VAZ 2110
Typically, the procedure is carried out after repairing the unit for which the fault code is responsible. In this case, the symbol does not disappear - it must be forcibly reset. This is done quite simply. The user is required to enter the service mode (hold down the daily mileage button), then double-click on any control. After completing the manipulations, a code will appear on the display. To eliminate this, the daily mileage button is pressed for 3-4 seconds and the system is reset. The machine exits the dialog box automatically after 30 seconds of inactivity.
Idling
Code 0505 indicates a malfunction of the idle air control. Moreover, 0505 is most often “issued” when the engine is started with the gas pedal pressed. This often affects drivers who switched from a carburetor VAZ 2110 to an injection one.
However, 0505 also occurs if the ignition module, spark plugs are faulty, there are broken wires, or the engine speed is not the one set by the XX regulator.
Idle speed control
If you notice popping noises in the muffler, this may also indicate displacement of the crankshaft ring gear. Code 0505 can be displayed either alone or with 0300 (missing cylinders).
Error codes VAZ 2112
On Lada cars produced in 2001 - 2007 and subsequent ones, the manufacturer installs a BC capable of performing a self-diagnosis procedure. Thanks to this, the motorist can independently read the fault codes of the VAZ 2112 and determine the presence of a breakdown. Errors are reflected on the instrument display in the form of one or two-digit codes. The disadvantage of the procedure is the lack of an accurate determination of the location of the breakdown - self-diagnosis is only capable of a general determination of the circuit.
Faults can also be read using additional equipment. The connected scanner provides detailed information about the specific location of the breakdown.
Throttle valve
The on-board computer issues two unpleasant errors - 0122 and 0123 when there is a problem with the throttle sensor. Moreover, 0122 will be displayed if the signal level of this sensor is low, and 0123 – if it is high.
Both one and the other, naturally, are not good. Especially if the on-board computer readings are accompanied by increased idle speeds, jerks at low speeds and dips. In this case, replacing the sensor does not always help.
Throttle position sensor
If codes 0122, 0123 are issued, be sure to check the signal and power wires for breaks, and also pay attention to whether there is any leakage through the injector rings. Remember: the main enemies of DPZD are engine washing and also the manufacturing plant, since there are a lot of defects here.
The following material is devoted to common malfunctions of the throttle position sensor: https://vazweb.ru/desyatka/pitanie/drosselnaya-zaslonka.html
Error codes VAZ 2112 8 and 16 valves on the instrument panel: decoding
In modern Lada models, a Euro shield is installed. There is an enlarged display here, where the main and secondary fault codes are displayed. On models 8 and 16 cells, the BC failure codes during self-diagnosis are identical, and the procedure for decoding them requires instructions. There are 9 direct ciphers in total. Codes can stack if there are two or more problems at the same time. If the tidy shows 21, this may mean there are problems No. 6, 7 and 8 at the same time.
If we talk about computer diagnostics, fault codes are deciphered according to a standard scheme that is relevant for all OBD2 variants.
Error 1 1
Says that a critical failure has been detected in the microprocessor system. Open the ECU module and perform a thorough diagnosis using special equipment. Simply cleaning or replacing damaged terminals often helps.
Error 2 on VAZ 2112
The actual on-board voltage differs from the set voltage. The problem may be a short circuit in the main wiring line or a critical discharge of the battery. Study the wiring and basic power components of the car.
Error 3
The fuel level sensor is damaged or not working properly. Check the condition of the float. The cause is a breakdown of the control wiring.
VAZ 2112: error 4
The code indicates that the DTOZH is out of order or is not functioning correctly. The problem should be resolved in the same way.
Error 5
The outdoor thermometer has failed. Check the sensor and its wiring.
Error 6
The code indicates overheating of the power plant. You need to stop immediately and wait for the engine to cool down.
Error 8 2112: 8 valves
Brake system malfunction. Troubleshooting begins with checking the brake fluid level and pad wear.
Error 9
The battery has gone into a deep discharge. Replace the module with a new one or charge the worn element.
Error 10: decryption
In the most common case, the code is a combination of problems 6 and 4. We are talking about a failure of the DTO and overheating of the motor. Problems should be resolved in parallel.
Error 12
Indicates a problem in the electrical circuit of the indicator on the device. Check the appropriate fuse and bulb.
Error 14
Increased signal from the DTOZh controller. There is a short circuit in the controller circuit.
2112 displays fault 18
It is a combination of errors 2, 9 and 7. Problems are resolved in the same way as individually.
Lada 2112 shows breakdown 26
A software glitch that combines three or more problems at the same time. To troubleshoot the problem, perform detailed network diagnostics.
Error 45
Similar solution to problems as in the above paragraph.
Error 34
Mass air flow sensor – low output signal level. The circuit may be damaged or the sensor may be faulty.
Code 78
A simple combination that the machine can use to represent problems 7 and 8 at the same time.
Error 89
Similar meaning and principle of education.
Error 210
Communication with the immobilizer is lost. Perform diagnostics of the wiring and contact groups of the module.
Malfunction P0102
A controller error indicates a low signal from the mass air flow sensor. There is an open circuit or the sensitive area of the sensor is dirty.
P0123 - breakdown
Short circuit on TPS. The circuit is producing too high a signal. There is a short circuit in the circuit. Check the line carefully for damage.
P0131 - error
Lambda probe No. 1 – line damage.
Error 132
Same for DK2.
Breakdown 0134
DK1 wires are broken. Code P0134 indicates a complete loss of communication with the sensor.
Error P0171
The malfunction can be displayed as the number 171. The coding indicates the problem of the fuel mixture being too lean. Check the line for cracks, leaks and damage - air is being sucked into the system.
Lada 2112: error 0172
A similar problem P0172 indicates the opposite effect. Here the fuel mixture is too rich. At 172, you need to check the air filter and mass air flow sensor for functionality.
Error P0300
When code 0300 lights up on the diagnostic scanner, check the ignition system. The error indicates multiple misfires in the cylinders.
P0301 - breakdown
A similar problem with more precise location indication. A misfire was detected in the first cylinder. The repair sequence is identical to point 0300.
Code 0328
Excessively high signal level from the knock sensor. The reason was the filling of low-quality fuel or a physical malfunction in the ignition unit.
Code 0325
There are problems with the knock sensor. Inspect the sensor for damage and replace it with a new device if necessary.
0335 - error
Displayed as 335. There is a problem with the DPKV wiring. The lines are examined for oxides or mechanical damage.
Fault 0340
Likewise for DPRV. For code P0340, the repair steps are identical.
Code 0343
Phase sensor – excessively high signal.
0443 - code
The canister purge valve is faulty, check the unit for damage or mechanical failure.
Error 0505
Short circuit on the speed sensor. Check the entire line.
Fault 0507
Idle speed too high. Check the mixture formation and mixture supply control module.
Code 456
The evaporative emission control module is not functioning properly. Check systems for damage.
Error 603
The ECM is damaged or there is a software glitch. Take the car to an electronics technician. Self-repair will not be effective.
P1135 - error
Incorrect mixture formation in partial load mode. Run system diagnostics.
Error 1426
Code P0426 indicates a problem in the wiring of the canister purge valve.
Error P1513
The idle speed regulator is damaged - a break with a short to ground. The wires need to be insulated or replaced.
1514 - malfunction
The idle speed control is damaged or there is a short circuit.
Error 1602: 2112 16 valves
Indicates that the powertrain control controller is losing voltage. The car does not start well when cold and crashes while driving.
Error 3456
The system requires checking the fuel level sensor. The module is damaged or its wiring is broken.
RAM error 2112
Indicates that there is a problem with the external thermometer. The sensor cannot be repaired; it must be replaced with a known good one.
KB 2112 sensor synchronization error
Indicates that there is damage in the sensor line or a malfunction of the sensor. The wiring and element are fully checked.
Error: lean mixture
If this code lights up on the dashboard, the control unit has nothing to do with it. If the mixture is lean, perform diagnostics on the fuel lines. The trouble is caused by air leaks at the joints or pipes.
Error: Mixture too rich
A similar problem caused by an air line obstruction. Here the filter may become clogged, the mass air flow sensor may break, or air may be sucked into the system after the sensor.
Phase sensor error
Check the sensor for problems. Repair consists of replacing the entire module.
Knock sensor error
The cause of the breakdown and the corrective actions are completely similar to the point indicated above.
Oxygen sensor malfunction
The controller may fail due to filling with low-grade fuel or problems with the mixture formation system.
Camshaft sensor malfunction
The DPRV may malfunction after passing a puddle or too active washing. To fix the problem, just dry the device well.
Crankshaft sensor malfunction
Worn gear on the working part of the sensor. The sensor can only be replaced entirely with a fully functional one.
Speed sensor malfunction
The DS on a car is reliable, but a problem can happen after driving along a broken road or crossing a ford - the sensor simply floods with water. If the diagnostics determines that there is a problem, the entire sensor must be replaced.
ECU malfunction
The module is diagnosed using special equipment. Experienced electronics engineers can resolder or repair the part, but in most cases, the unit is simply replaced with a new one.
Crankshaft and camshaft
- code 0335 indicates a malfunction of the crankshaft position sensor. Therefore, when you see 0335 on the computer, you need to check whether the signal is coming from this sensor. If you find that the signal is weak, you can help by changing the air flow if it is excessive (above the maximum). After this, error 0335 should disappear;
- When you see error 0340, you know that the camshaft position sensor is most likely faulty. Although in fact, even if 0340 is displayed, the camshaft itself may be in good condition, the car is working as usual. But when the numbers 0340 do not disappear while the engine is running, this unit should be carefully inspected.
You can read more about the operation of the crankshaft sensor in this material: https://vazweb.ru/desyatka/dvigatel/datchik-kolenvala.html
Error codes on the 16 valve VAZ-2112: self-diagnosis on the dashboard
Almost every owner of a 16-valve VAZ-2112 has encountered the fact that the on-board computer periodically produces errors. They indicate malfunctions in the operation of the engine system and other important components. The first sign that a malfunction has occurred is the appearance of the “Check Engine” indicator on the dashboard . But not all motorists know what this means. Therefore, it is necessary to connect to the computer and determine what error and malfunction is in the system.
How to distinguish “gaps” from everything else
Let's consider the situation: it is difficult to start when hot. If it starts when cold, the check light then turns on, but after 20-30 minutes it goes out. In this case, we can conclude that there is a misfire. Well, they can even be caused by an insulation breakdown. And above we looked at what is typical for the 2112 family (but not for the 21124 engine).
This block is too smart. They can say that the check for the VAZ-2112 caught fire for no reason. This happens in cases where:
- The indicator turns on, then the engine is turned off and the battery is disconnected (disconnect the minus terminal for 10 minutes);
- After connecting the battery, no defects are observed. Start the engine - the check lamp does not light up.
In fact, the ECU actually remembers any defect (the occurrence of any error). But the “reset” is also performed by the system itself:
- When starting the engine;
- After the next test cycle.
For each error, one of two methods is used. And, in theory, there is no point in disconnecting the battery. If the “check” is constantly on, then you need to look for a defect. And “terminal tricks” usually don’t help.
Error codes
It is recommended to carry out diagnostics and flashing of the ECU with the on-board PC removed.
Now let's decipher the codes of all ECU error codes that can pop up when connecting the car's on-board computer to a laptop or tablet PC: 0102 - Low signal level of the mass air flow sensor 0103 - High signal level of the mass air flow sensor 0112 - Low level of the intake air temperature sensor 0113 - High Intake air temperature sensor level 0115 - Incorrect coolant temperature sensor signal 0116 - Incorrect coolant temperature sensor signal
How to read errors?
In order to read errors, you need to connect a laptop or tablet PC to the car via a special K-line cable. Let's look at what tools will be needed to connect the car to the computer and determine error codes:
K-line cable for connecting a laptop to a car
In order to connect, you need to find a connector for the cable. It is located under the steering column. Now you need to connect the cable itself and then the USB connector. The following programs are considered optimal for use: VAG-COM USB KKL adapter; VAZ diagnostic program for models, Priora, Kalina, Grant; USB driver Autocom cdp pro cars USB; ScanMaster 2.1 in Russian for ELM327.
Car diagnostics using a laptop
Troubleshooting and reset
Eliminating ECU errors is quite simple. In the reading program, you need to find the desired fault and decipher it. Then, it is recommended to fix the problem that caused the error. The last step is reset. It can be found in program tools or actions.
Many car enthusiasts make a mistake when working with software, because they “reset” not the errors themselves, but the entire software, thus leaving only the car software shell. After such actions, usually, the car may not start and software adjustment of the equipment or replacement of the entire software as a whole is required. Therefore, in this case, it is recommended to contact a car service, where they will do everything correctly.
Electronics
Let's look at some especially annoying error codes, which, as if they don’t affect the speed, but constantly remind you that something may be wrong with the VAZ 2110. These include:
- error 1621, warning the driver that the RAM is disabled, that is, code 1621 indicates that the controller is not working, which means that errors are not read, you remain in the dark about what is happening with the systems of your car. Most often, when drivers see the numbers 1621, they ignore them, reset the RAM error (remove the terminal from the battery for a couple of minutes, then put it back on) and drive on. But, after turning off the car and starting it again, they see the same ill-fated code 1621. You can try to carefully inspect the twist near the ECU (to ground), and perhaps additionally solder the factory crimp. However, often even contacting specialists does not help; code 1621 remains on until the RAM memory is changed;
- Sometimes it happens that the injector light comes on. This is especially observed in winter, and when the engine warms up well, the light goes out. Although this is not so scary, it is somewhat unnerving, and the light bulb breaks down if it burns for a long time. It’s better to contact a service center where they can update the firmware, then the light bulb will stop bothering you.
Injector indicator
Principle of operation
The DPRV sensor operates on the Hall principle and is capable of determining the position of the camshaft as accurately as possible at different periods of operation by reading pulses. The device transmits the received information to the electronic control unit (ECU). After this, the main controller adjusts the fuel injection for each injector at a certain time. That is, knowing the position of the camshaft, the on-board computer is able to establish a phased supply of gasoline to the cylinders.
