Lada Vesta error codes: description and decoding

All modern cars are equipped with advanced devices for monitoring and recording breakdowns of on-board systems. Standard Lada Vesta error codes are detected and stored in long-term memory until they are read by a third-party device and completely reset. The car itself is a modern car that meets the requirements of advanced standards. The internal components and mechanisms of the car have been modified to the required level of reliability and service life.

On the other hand, motorists often complain about the reliability of electronic components. The on-board electronics malfunction when traveling on unpaved roads or when crossing fords, which causes errors to appear in the systems memory.

Diagnostic methods for Lada Vesta

There are two types of reading errors from the memory of the car’s on-board computer.

Self-diagnosis - the on-board computer can show the motorist any existing errors. A simple procedure allows you to perform repairs without additional equipment. The disadvantage is the impossibility of determining the exact location of the breakdown or its system - the BC will only indicate the direction in which the defect should be looked for.
Using a diagnostic scanner is a complex procedure that cannot be done at home. For normal diagnostics, you will need to connect a laptop or tablet with a special program to the machine. Usually this is done exclusively in specialized workshops.

Vesta error codes - decoding and designation

To properly understand the essence of the problem, you need to know how the serial error number is deciphered. The screen of a third-party device usually displays a five-digit code, where the first part is:

B – body systems are damaged;
C – interruptions in the stability of the suspension and chassis;
P – incorrect functioning of the electronics of the power unit or gearbox;
U – the data exchange bus is out of order.

Next comes the first digit:

0 – SAE catalog number;
1-2 – standard serial number;
3 – reserve.

The third part of the code directly indicates the system where the breakdown was detected:

1-2 – air or fuel supply devices;
3 – ignition;
4 – catalyst problems;
5 – incorrect idle speed;
6 – problems with the computer;
7-8 – gearboxes for automatic or manual.

The last element of the code indicates the serial number of the error.

U0402 - Invalid Data Received - Transmission Control Module (TCM)

The story happened on December 17, 2021, in the evening I left the garage to go shopping. I was driving along the road and saw some kind of obstacle on the road (I didn’t immediately understand what it was), I managed to steer with the right front wheel and then one bad person jumped out into the oncoming traffic and I had to swerve sharply to the right. I got hit in the rear right and it threw my butt a little. I get out, the tire is torn and the disk is badly damaged. The obstacle turned out to be a manhole cover that was not the right size and it stood almost vertically. In a fit of anger, I called the traffic police, filed an accident, and learned from this crew that during the day they had issued an order for the missing cover of that same hatch. Well, I think I’ll sue! When I took the certificate and turned to a lawyer, as one of my colleagues likes to say, “I met reality.” At most, you can eat one cylinder and repair the disk, well, if you resort to an examination, you can prove that the alignment/camber has gone wrong due to an impact. In general, the prospect of thousands is 15,000 rubles, but I will spend an unrealistic amount of nerves and time. In general, I abandoned this idea.

What we have as a result:

1. We couldn’t find one or at least a pair of the same tires, so we buy a new set of tires. I had Dunlop, now Chinese Duran. I already wrote here about Bridgestone and Yoku, that they are made in Russia and they don’t want to sell it in stores. I didn’t want to take Dunlop again, I didn’t like him. In the end, I took the Chinese one and did not regret it. It is better balanced, very quiet and soft on the highway, and holds the road no worse. The price was 28,000 rubles per set.

2. During the wheel alignment, we found some soured bolts, removed them somehow, ordered all new levers with bolts from Andrey @up6, once again I shake his hand, everything cost ~40,000 rubles with delivery. The bolts are original, the levers are from MOOG.

3. It’s good that the same wheels for the summer set were lying around, I took one from there, and sent them, along with the damaged one, to Khabarovsk for repairs and a complete repaint. For everything with delivery there/there 20,000₽.

4. And lastly, the replacement work itself, at the same time we replaced the silent blocks of the rear gearbox (they had been lying around for a long time and could not be touched). And since the brakes needed to be pumped, we replaced the brake fluid and at the same time changed the oil in the rear gearbox and, of course, the wheel alignment. As a result, 17900₽. Total spent 105900₽. Of course, it was possible to save a lot, look for the same tires across the vast country, repair only one disk and replace one lever, but I’m not used to half measures, and I can still afford it.

This is what the damage looked like, at first glance it seems that the disk was not badly damaged, but this is not the case.

Now the disks look like this. For me it turned out great.

New suspension parts.

This made it easier to cut the bolts.

The old ones are basically well worn out. The mileage at the time of repair was 185,989 km.

Have smooth roads everyone and avoid these manholes!

Lada Vesta errors decoding and description

The following are the most popular Vesta 1.8 and 1.6 errors associated with power plant components (P):

0030/31/32 – violation of the integrity of the sensor circuit installed in front of the neutralizer with a possible short circuit to the body or wiring;
0036-38 – similar for DK 2;
0106-108 – erroneous data received from the pressure sensor in the intake manifold with an open circuit or short circuit;
0111-113 – the same block responsible for the intake air temperature, signal failure;
0116-118 – malfunction of the antifreeze temperature sensor;
0122-123 – the wiring of the throttle position sensor is faulty, the element itself may be damaged;
0130 – oxygen sensor has failed;
0131-134 – DK1 detected incorrect signal transmission to the on-board computer;
0135 – the part described above has failed;
0136 – DK2 is out of order;
0137/138/140 – breakdown of the DK2 highway;
0141 – malfunction of heater DK2;
0171/172 – excessively lean or enriched fuel mixture;
0201-204 – the injector control lines are out of order, respectively for each cylinder;
0217 – excessive heating of the cooling system, you need to stop and wait until the engine cools down;
0222/0223 – TPS B lines, produce a high or low signal;
0261/264/267/270 – short circuit to the body of the injector circuits for each cylinder in series;
0262/265/268/271 – similarly with touching other electrical wiring elements;
0300 - the on-board computer has detected multiple misfires - the fuel supply to the engine is turned off;
0301-304 – misfires in a single cylinder sequentially, the injectors of the corresponding cylinders are turned off;
0327/328 – the fuel mixture knock sensor sends incorrect signals;
0335/336 – DPKV circuit is faulty or the sensor itself is broken;
0340/342/343 – DPRV has failed or faults have been detected in its line;
0351-354 – open circuit for controlling the injector drivers for each cylinder in series;
0363 - error p0363 Vesta indicates that there are misfires, which provokes a cutoff of the combustible mixture supply;
0422 - the neutralizer is out of order or clogged - a line replacement of the unit is required;
0441 – incorrect oxygen flow through the CPA was detected;
0443/444/458/459 – there is a problem in the canister purge valve circuit; you need to check the entire line;
0480/481 – error p0480 Vesta and its analogue indicate an open circuit of fan relay 1/2;
0504 – violation of synchronization of brake pedal signals;
0513 – incorrect immobilizer key;
0522-523 - error p0523 Vesta and others like it say that the oil pressure sensor is giving an incorrect signal;
0560-563 – disturbances in the stability of the vehicle’s on-board network;
0601-604 – errors in the ECM;
0606 – processor malfunction;
0627-629 – failure of the main fuel pump control relay;
062F – EEPROM error;
0641-643 – there are problems within the sensor power supply circuit;
0645-647 – the air conditioner clutch control relay is out of order or there are wiring breaks;
0660-662 – the wiring of the valves of the intake length control system is shorted or broken;
691/692 – short circuit to the body/on-board circuit RV1;
693/694 – similar for RV2;
1301-1304 - error 1301 Vesta and the next three points indicate that critical misfires were detected, damaging the converter, for each cylinder sequentially;
1335 – the sensor finds the throttle position outside the permissible limit;
1336 – similarly for the specified element indicates a TPS mismatch;
1388 – similar desynchronization of the gas pedal;
1390/1391 – the throttle valve actuator is faulty or does not work correctly;
1545 – the position of the throttle valve on the instruments does not correspond to the actual location;
1558 – the DZ spring burst or flew off;
1559 – PDZ is outside the permissible limit at idle speed;
1564 – on-board PDZ systems interruption of zero position adaptation;
1570 – the immobilizer control circuit has failed or is damaged;
1578/1579 – problems in the remote control drive control system;
1602 – voltage to the ECM is lost;
1640 – there is an error in the EEPROM program for the ECM;
2100-2103 – problems with the electric throttle drive;
2105 - error p2105 Lada Vesta indicates incorrect operation of the spark plugs, usually happens after replacing parts;
2122/2123 – the signal level of the gas pedal sensor A is too low or high;
2127/2128 – similar for sensor B;
2135/2138 – mismatch between sensors A and B of the throttle/gas pedal position;
2176 – adaptation of the throttle valve drive has not been carried out;
2187/2188 – excessively lean/rich air-fuel mixture at idle speed;
2270/2271 – no response from DK2 to depletion or enrichment of the fuel mixture;
2301/2304/2307/2310 – closing the ignition coils for all cylinders in series with contact with the on-board wiring sections.

Connection errors between electronic units U0422 of a Lada car

Taking into account the fact that OBD2 errors in the operation of a car’s electronic systems do not always directly indicate a non-functioning element, but more often they provide only general information about the malfunction, we came to the following conclusion:

In different brands and models of cars, the same error can occur as a result of the malfunction of completely different elements.

It became clear that a resource was simply needed in which one could find not only general information about the OBD2 error, but also practical data on a specific car.

The experience of auto electricians has shown that if we consider a specific make and model of a car, then in the vast majority of cases the cause of any error is the same.

We are creating, with your help, a directory of cause-and-effect relationships for the occurrence of a particular OBD2 error in a specific car (make and model). If a description (causality) of the error is not found for your car, then do not hesitate to ask a question.

Decoding Vesta errors related to the data bus (U)

0001 – pin failure at the physical level;
0002 – block wiring is damaged;
0009 – short circuit of lines touching the on-board circuit or body;
0073 – diagnostic output disabled;
0121 – there is no signal from the ABS unit;
0122 – ESP controller does not respond to the request;
0155 – open circuit of the control panel;
0167 – the immobilizer does not respond to the diagnostic scanner request;
0415 – standard error of ABS Vesta;
0416 – similar for the ESP system;
0426 – the immobilizer transmits incorrect information to the on-board computer system.

How to reset errors on Vesta

After diagnosing and troubleshooting, it is necessary to reset the on-board computer errors for its normal operation in the future. If everything is left as is, the vehicle’s on-board systems may operate intermittently even in good condition.

Typically, on simpler modifications of the manufacturer, the numbers are reset by resetting the on-board computer counter or removing the battery terminals.

Lada Vesta errors are reset only when a diagnostic scanner is connected. The special program provides the ability to fully manage and monitor on-board systems in terms of electronics. By going to the appropriate settings section, the wizard can eliminate all error codes and failures from the device’s memory.

What does P0422 mean?

Trouble P0422 is a general trouble code that indicates that the primary catalytic converter (bank 1) efficiency is below acceptable levels. Catalyst efficiency is determined by the transmission control module (PCM), which uses exhaust gas and temperature data from oxygen sensors located upstream and downstream of the catalytic converter to determine efficiency. If the readings from both sensors match or are almost identical, this indicates that the catalyst efficiency is most likely below acceptable levels. In this case, error P0422 will appear.

How to prevent errors on Lada Vesta

There are often cases when, after diagnosing and inspecting the car, technicians do not find significant problems in the equipment that could cause errors. With proper prevention and care of the machine, such situations do not arise.

Experienced professionals recommend performing certain actions while operating the vehicle.

Avoid deep discharge of the battery. All on-board equipment, including sensitive sensors, react extremely sharply to voltage sags within networks, which can cause their failure or incorrect operation. You should also be careful about the operation of the generator - strong surges also negatively affect the durability of the equipment.
Once a year, diagnose the condition of all wires and structural elements. When operating a car, all electrical components are exposed to temperature changes, moisture, and dirt. External factors greatly damage the cable braid, which leads to its drying out and cracking. Subsequently, the insulation is broken, leading to short circuits and errors.
Periodically check the tightness of the connections and the condition of the terminal blocks. During active driving, the plastic clamps are subject to strong vibration - this often causes contact failure and loss of signal from the sensor.

Also, some experts recommend treating all connections with a special oil - this will prevent moisture from entering the terminals and oxidizing them, which also negatively affects the passage of the signal to the on-board computer. At the same time, the cost of such lubricants is relatively low, which allows you to take care of your car quite economically.

Myth 1. Adaptation is an optional procedure.

Some drivers believe that AMT is simply slightly complicated mechanics. Therefore, it does not need to be specially “trained” and maintained.

In fact, AMT is truly a modified manual gearbox. And that's why it needs to be adapted. A robot or computer, unlike a human, cannot adjust to clutch wear or the situation on the road. It works according to algorithms. These same algorithms need to be programmed periodically.