Car error codes. Car Error Codes Search Car Error Codes

Complete vehicle diagnostics should be carried out every 20-30 thousand km. mileage. Car diagnostics allows you to identify not only breakdowns, but also hidden defects and shortcomings, which is especially important when buying a brand new car.

All modern cars have electronic control and monitoring systems. A malfunction in one control system can affect the operation of another. It is precisely the computer diagnostics of cars that allows you to determine such a malfunction, and facilitate the search for a breakdown or a risk zone.

In some new cars, computer diagnostics of a car is available for almost all electrical systems of a car, up to lighting and central locks, in this case, car diagnostics is greatly simplified.

The control unit or controller detects the presence of breakdowns, malfunctions and notifies the driver by turning on the lamp " CHECK ENGINE ". At the same time, diagnostic codes of vehicle malfunctions are stored in the memory of the controller, which indicate the nature of the malfunction, which facilitates diagnostics and subsequent repairs.

Computer diagnostics is carried out by connecting the stand or scanner to the diagnostic connector of the car. In this case, the monitor displays fault codes for the engine management system or other systems. It all depends on the capabilities of the diagnostic program and the control units of the vehicle.

In addition, the stand or scanner not only reads the diagnostic trouble codes of the car, but also checks the actuators in real time, receives and writes data, service adjustment, and controller coding.

Based on the data obtained and rechecked by trained specialists in the engine, injection control system, fuel system, ignition, etc., it is possible to make a conclusion about the causes of the malfunction and repair, replace or simply Maintenance incorrectly working or faulty nodes.

Vehicle Diagnostic Trouble Codes

List of the most common abbreviations for OBD-II

AFC - Air mass meter

ALDL - Diagnostic connector.

This used to be the name of the diagnostic connector for GM vehicles, as well as the connector for connecting the scanner;

can also be used as the name of any OBD II signals

CAN - Controller

CARB - California Air Resources Board

CFI - Central Fuel Injection (TBI)

CFI - Continuous Fuel Injection

CO - carbon monoxide

DLC - Diagnostic connector

Driving Cycle - The sequence of starting, warming up and driving the car,

during this cycle all OBD II functions are tested

DTC - Malfunction code

ECM - Engine control unit

EEC - Electronic Engine Control

EEPROM or E2PROM - Read-only Programmable Memory

EFI - Electronic Fuel Injection

EGR - recirculation exhaust gases

EMR - electronic ignition angle reduction unit

EPA - Environmental Protection Council

ESC - Electronic ignition control

EST - Electronic ignition timing

Fuel Trim - balancing the composition of the mixture

HC - hydrocarbon

HEI - ignition

HO2S - heated oxygen sensor

ISO 9141 is the international standard for the OBDII connector

J1850PWM - protocol for OBD II connector established by SAE standard

J1850VPW - OBD II connector protocol established by SAE standard

J1962 is the standard for the OBD II diagnostic connector established by the SAE standard

J1978 - SAE standard for OBD II scanners

J1979 - SAE Standard for Diagnostic Modes

J2012 is an EPA approved SAE standard for messages when testing an exhaust gas system

MAF - air flow

MAP - absolute pressure in the intake manifold

MAT - intake manifold air temperature

MIL - malfunction indicator lamp.

Lamp " Check Engine Light "on the dashboard.

NOx - nitrogen oxide

O2 - oxygen

OBD - diagnostics OBDII or OBD II - advanced standard for diagnostics

cars in the USA after 1-1-96

Parameters - Parameters for OBD II diagnostics

PCM - Transmission Control Unit

PCV - Carter Proprietary Readings - Parameters on-board computer not required

for OBD II diagnostics, but can be used to diagnose faults different types cars.

PTC - Fault code

RPM - rpm

Scan Tool - scanner

SES - engine service lamp on the instrument panel

SFI - Stoichiometric sequential fuel injection (Stoy "-kee-o-metric)

Ratio - Fuel combustion ratio

TPS - Throttle Position Sensor

VAC - vacuum

VCM - vehicle central control unit

VIN - vehicle identification number

VSS - speed sensor

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13.10.2017, 13:22 41363 0 Assembly of Motorists

What are car error codes, how are they generated and what to do when the error indicator comes on? These questions are often asked by car owners, especially those who have just recently purchased a car and are learning to drive.

All electronic control systems modern car have a self-diagnosis function that informs the driver about emerging malfunctions. In fact, it turns out that on-board computers monitor not only the situation on the road, but also almost all internal processes that occur in the car. Such control and diagnostic systems may differ even in vehicles of the same make. However, the principle of diagnostics itself remains unchanged: there is a continuous reading of signals from several dozen sensors, verification of the results obtained with the specified values and, most importantly, when an error is detected, its code is saved in the computer memory. In the future, vehicle error codes can be read using an on-board computer or specialized diagnostic equipment: adapters, scanners, and other dealer devices.

OBD2 Error Codes by Car Make

The abbreviation OBD-II stands for the on-board self-control standard, which provides comprehensive engine control, allows monitoring of various additional systems, and controls the car control network. It was developed in the 90s and in many cases is a mandatory protocol for performing on-board diagnostics. Within this standard, manufacturers use various communication protocols with on-board electronic equipment, through a special 16-pin trapezoidal connector, which is located in the steering wheel area. Moreover, each diagnostic equipment is used for a specific brand or groups of cars. To illustrate, the following examples can be given:

- Honda HDS adapter with software and drivers - diagnoses Acura and Honda vehicles;

- professional scanner Bars IV - for FORD diagnostics, and if there are appropriate adapters - for other car brands, such as Toyota, Hyundai, Mazda, Mitsubihi, Nissan;

- dealer diagnostic scanner DST-14T, recommended by AvtoVAZ - allows you to quickly find and decipher the error code of a VAZ car.

The code itself consists of 5 characters: one capital Latin letter and a four-digit number.

The letter means:

- P - engine malfunction or automatic box gear;

- B - power windows, central locking, other body systems;

- C - problem with undercarriage auto;

- U - inter-unit communication bus.

First digit of the code:

- 0 - position provided for ELM327 adapters;

- 1, 2 - positions for the manufacturer's code;

- 3 - reserve.

Second digit:

- 1, 2 - mixture formation;

- 3 - elements of the ignition system;

- 4 - additional systems;

- 5 - control of systems that ensure idle speed stability;

- 6 - malfunction in the control unit;

- 7, 8, 9 - transmission control;

- 10, 20 - codes set by the manufacturer, depending on the car brand.

The third and fourth digits are the number of the specific malfunction. Error codes for cars that support this protocol are divided into two categories: general or, as they are also called, basic - common for all cars and extended or additional error codes for car brands, significantly expanding diagnostic capabilities.

Car error codes program

In order to quickly determine the location of a car malfunction, it is not enough to have diagnostic equipment and a laptop. It is required to install the vehicle error codes program. As a rule, it is supplied complete with diagnostic equipment. Today there are a lot of such programs, so every car owner can choose a utility for any platform, from Windows to Android. With their help, you can quickly find out OBD-2 error codes on the go. For example, using the Elm327 Bluetooth adapter by connecting it to the OBD-II diagnostic connector and using a special application for Android, you can easily get a list of error codes on your smartphone and find out what each of them means.

Having knowledge about car error codes, being able to receive and decipher them, you can always keep your finger on the pulse and react in time to emerging malfunctions.

OBD (from English "on board diagnostic") is translated into Russian as "on-board diagnostics". At its core, OBD-2 is a technology for detecting a malfunction of a car or its separate unit using a diagnostic device. This device connects the vehicle's on-board computer with a laptop, personal computer or other similar device in order to identify existing faults.

OBD-2 appeared at the end of the 20th century in the United States of America. The US government has found that the automotive industry it supports has a negative impact on the environment and humanity. In order to mitigate this influence, a law was passed that required the installation of a system in electronic control units for vehicles that controls the operation of the engine, directly or indirectly affecting the composition of the exhaust gas.

The same law provides for a protocol for reading information about inconsistencies in environmental parameters in engine operation and other information on vehicle diagnostics.

So what is OBD-2 now? OBD-2 is a system that reads and accumulates the necessary information about the work of all automotive systems... The initial environmental specificity of OBD-2 limited its use for diagnosing all vehicle malfunctions. Over time, the capabilities of this system have expanded, and it has become widespread not only in the United States, but also in cars manufactured in other countries of the world. In the United States, diagnostic equipment that works under the OBD-2 protocol has been used on a mandatory basis since 1996. This rule applies not only to cars that were produced in this country, but also to imported cars sold in America. After some time, the use of OBD-2 has acquired the status of an international standard, and this system has become popular in all countries of the world.

OBD-2 has gained such widespread popularity due to the fact that it facilitated the work of auto services to diagnose and troubleshoot vehicles. Of course, because OBD-2 makes it possible to monitor all control systems of a car and even some systems that do not relate to control, for example, body, chassis, etc. OBD-2 also allows you to read codes of existing malfunctions and monitor vehicle statistics (average speed of a car, number of revolutions per minute, etc.).

Before the advent of OBD-2, the communication protocol, diagnostic connector and its location were very different for each car manufacturer. As a result, the car repair technician had to first look for a long time for the location of the connector, and then also select the right equipment. Even large auto repair shops cannot afford to have all types of diagnostic devices in stock.

After the appearance of OBD-2, the type of diagnostic connector in each car began to be made the same and placed in a certain and easily accessible place, most often at the ignition key or in the glove compartment of the car. Video: ELM327 OBD 2

"Pinout"

Despite the fact that the OBD-2 system is standardized, car manufacturers still have some freedom in developing protocols, so the "pinout" for some car brands may differ. In the work of OBD-2, several standards are used at once: ISO9141-2 (all European cars, most Japanese and Chrysler), J1850 VPW ( American models GM), J1850 PWM (Ford), J2234 (CAN). Each of the listed standards works with a group of cars, the composition of which is strictly defined. Car service workers must know the composition of each such group. In place of the diagnostic connector, there are contacts for each of the standards. In professional auto scanners, there are many connectors and adapters that are suitable for each specific vehicle.

At its core, OBD-2 pinouts are standardized requirements and rules that car manufacturers must comply with in order for the vehicle management system to comply with the requirements of the rules and laws that relate to the smooth operation of the car and the amount of exhaust gases from it.

The pinout of the sixteen OBD-2 connectors is provided by the following components:

Contact 1	Formed by the manufacturer
Contact 2
Pin 3	Formed by the manufacturer
Pin 4	Grounding the chassis
Pin 5	Signal ground
Contact 6	CAN (direct) J2284
Contact 7	ISO 9141 - 2 (K - line)
Contact 8	Formed by the manufacturer
Contact 9	Formed by the manufacturer
Contact 10
Contact 11	Formed by the manufacturer
Contact 12	Formed by the manufacturer
Contact 13	Formed by the manufacturer
Contact 14	CAN (invested) J2284
Contact 15	ISO 9141-2 (L - line)
Contact 16	Battery voltage

Error codes

The error code consists of five characters, each of which has its own meaning:

First sign:

P - the functioning of the engine and automatic transmission;
B - the functioning of "body systems" (power windows, central locking, airbags);
C - running gear functioning;
U - a system of interaction between electronic units (for example, to the CAN bus).

Second sign:

0 - common code for OBD-2;
1 and 2 - manufacturer's code;
3 - reserve.

The third sign indicating the type of breakdown:

air supply or fuel system;
ignition system;
auxiliary control;
idling;
ECU or its circuit;
transmission;
transmission.

The fourth and fifth characters are the sequential error numbers.

Also, in the description of errors, the words Bank1, Bank2 are sometimes found. These are the designations of the exhaust pipe. If the car has a normal engine, then Bank1 is used, and if the car has two exhaust pipes, then one is designated Bank1, and the second Bank2.

Programs

In order to diagnose a car malfunction, it is not enough to have an OBD-2 device and a computer or laptop. It is necessary to install a special program, which will become a connecting link for diagnosing problems with your car. Many manufacturers of OBD-2 devices supply such programs bundled with the device, but they are often very inconvenient to use, too complicated and do not have a Russian-language menu. Therefore, most users are trying to find a more convenient version of such a program on the Internet. Indeed, the World Wide Web makes it possible to download such utilities for every taste and for any platform, from Windows to Android and MacOS.

OBD-2 software for iOS

iPhoneapplication is the leader in iPhone and iPad software. This program works exclusively with ELM327 and OBD-2 adapters that have Wi-Fi capability. iPhoneapplication is a professional application. The main advantage of this program is its mobility, which makes it possible to diagnose your car at a convenient time and place. iPhoneapplication can scan not only the engine, but also the airbag system, gearbox, can track the temperature of the cooling system, the level of oil and other fluids.

Another easy-to-use program for iOS is DashCommand. In terms of its functions, it is not inferior to the first utility, but it only works with ELM327 with Wi-Fi. DashCommand has a convenient and pleasant design, makes it possible to clear the list of errors, can track fuel consumption and even calculate the cost of a trip if you indicate the cost of one liter of fuel. This app also has an Android version.

Both programs can be downloaded and installed on your device via the iTunes application. Their only rather weighty drawback is the lack of a Russian-language version. Video ELM327 WiFi OBD 2 IPhone Setup Demo on Subaru Impreza:

OBD-2 software for Android

Torque is the leader among the programs on the Android operating system for diagnosing car problems. This program works with a Bluetooth enabled ELM327 device. This program has collected in itself all possible functions, which are limited only by the capabilities of your vehicle (the number of sensors installed in it and electronic systems). After installing this program, the device you are using will be able to measure the torque of the car, work as a speedometer and tachometer, etc. Torque has a beautiful interface design that will not leave anyone indifferent.

This utility has the ability to read the list of logs from the car's on-board computer, gives an error code and brief information about it. The application has a GPS tracker, which makes it possible to find out where and when the car was, if the car was in motion, then the GPS tracker can tell you how fast the car was moving at any time and on any part of the path. Torque has a version in Russian, which makes it very easy to work with. Video: Connecting OBD2 adapter to Ca-Fi Android car radio:

OBD-2 software for Windows

The advantage of applications for Windows systems is that they are protected from unauthorized connections, since the connection to OBD2 adapters is via USB. The most popular and convenient program for car diagnostics is ScanTool. The program has a wide error base with a full description. ScanTool has a Russian-language version.

Another convenient program is MyTester. It works great with domestically produced cars (GAZ, UAZ, VAZ), because it was developed specifically for them. This program works with ELM327. MyTester will help you find out fuel consumption, the temperature of the cooling systems, the level of air pollution from the exhaust gases of your car and much more.

OBD2 Video ELM 327 Bluetooth v.1.5 (Windows):

By choosing and installing one of the above programs, you can make an independent diagnosis of your car at a convenient time for you.

Important! Before deleting the log file with errors from your on-board computer, make sure that they are not serious and will not lead to major problems.

- as it becomes clear from the name of the application, it is able to show the user a lot of useful information about cars. It is in this application that you can find all the answers to errors that your car can indicate to you. The program also contains other useful information for motorists. All this helps you get exactly what you have been waiting for. Never before has it been so easy for a user to find out the decryption of errors.

Because the developers of the application tried to collect everything in one place and it became much more convenient for the user. Just install the application on your mobile devices and you will be amazed that the program gives you something that you have not seen before. That is why many car enthusiasts began to use the application as intended and were completely satisfied. Never before has it been so easy and understandable for you to communicate with your car.

Also, the program works on almost all versions of mobile devices and takes up little memory space. These advantages help the program gain popularity among users. The developers constantly make sure that the information is updated, so that by installing the program you will have the latest legislative information about traffic rules and other things. All this can come in handy at any time.

Scientific progress does not stand still, and electronics occupies almost all spheres of society. Each car is made up of many different electronics and instruments. This both makes maintenance of the vehicle more difficult and simpler. With the help of special blocks, the driver can identify a malfunction in the early stages of its development.

Modern vehicles are equipped with self-diagnostic units that constantly poll all important technical modules and machine units. Such sensors will detect any malfunction in the engine, transmission or electrical system. If a malfunction is found, you receive a code value through the electronic control unit. But how do you understand what this means? To solve this problem, a special application for car enthusiasts "OBD 2 error codes" has been developed. This overview will show you how to use this utility.

Brief description of the program

The name of the application speaks for itself, from it it is clear that the main task is to educate the user about system failures of the car. OBD 2 error codes is a voluminous directory that contains all modern car brands. For each brand, there is a section that lists all possible code values for vehicle system errors.

The developers have brought to life a rather useful guide for car enthusiasts. A convenient and efficient search system will allow you to find information about your car brand in a matter of seconds. But besides this useful information, the driver will find something else:

Code values of the regions of the Russian Federation and designations of auto - numbers of other countries;
Constantly updated catalog of rules road traffic... You will be notified in time about new changes in legislation;
Up-to-date information on fines;

With this useful program, you will always be up to date with the latest innovations in regulations and legislation.

Installing the app

To install this application, you need to follow a series of simple steps:

Go to the official software store on your device (Play Market, AppStore).
Write in the search "OBD 2 error codes" and start downloading.
Your operating system will automatically install the software.

You can also download obd 2 error codes in Russian on Android from third-party sites, for this, use the browser on your mobile device with an Android-based operating system and enter the required query in the search box. Remember that by downloading apps from suspicious sites, you run the risk of making your device unusable by infecting it with malicious viruses.

Decoding obd error codes is not difficult. After launching the application, the car enthusiast will see the main menu, which contains a list of sections. To find out information about a failure, go to the appropriate section, select the make of the car and find the required code in the list of errors.

Write your opinion and feedback about the program in the comments under the review.