What is the pin code for obd2 elm327. The ELM327 Bluetooth adapter does not connect to the ECU in any way: there is a solution. OBD2 Bluetooth adapter. Instructions for connecting the Bluetooth OBD2 adapter Password for pairing elm327

Instructions on setting up a diagnostic adapter ELM 327 WiFi with programDashCommand download

If you purchased a diagnostic adapter based on a chip ELM 327 and you have difficulty setting it up, then on this page you will find instructions in Russian for the ELM327. On our website there are instructions for elm327 various modifications ( USB, Bluetooth, Wi-Fi)

Video instructions for connecting elm327 Bluetooth

Comparison of versions of adapters elm327 Bluetooth v1.5 and version 2.1. What are their differences and why it may not be connected to the car.

So, let's get started, if you haveELM327 Bluetooth diagnostic adapterthen for his work with the programTorque You need:

1. Connect the diagnostic adapter ELM 327 Bluetooth to the OBD II diagnostic connector of your car, after which you need to turn on the ignition.

2. Then turn on the Bluetooth module on your device (smartphone or tablet PC on the Android platform).

3. In the settings of your mobile device, you need to go to the Bluetooth wireless networks section and click search for new equipment to pair. A new device will appear in the search window (usually the identifier “CHX”, “OBDII”, “CBT”, “Vgate”, etc.) After this, you can click on the item to pair with the device (you will need to enter the password from the adapter instructions, as a rule it is 1234,0000,1111,9999,6789 ).

4. After that, open the program Torque.

5. Go to the program menu, “settings”.

6. Open the section "OBD2 adapter settings / Select Bluetooth device" and select your adapter ELM 327 Bluetooth(has the identifier "CHX", "OBDII", "CBT", "Vgate", etc.) from the list.

7. After that, click on the icon that says “Adapter Status” and check the connection (green checkmarks should appear next to the first 3 items in the list).

8. You can also select the protocol manually in the “Vehicle Profiles” item (located in the same menu as “settings”).

9. After this, you can start diagnosing your car!

is a special Bluetooth device that allows you to quickly diagnose a car, identify errors in the ECU (electronic engine control unit), understand their cause and eliminate them, without resorting to the help of qualified specialists (whose services are very expensive).

The elm327 mini car diagnostic scanner appeared on the Russian market relatively recently, but today it is already used by a large number of car enthusiasts, this fact is directly related to the fact that devices such as, for example, the ELM327 BLUETOOTH adapter we are considering have a number of undeniable advantages over a regular visit to a specialist. car diagnostics:


As you already understand, having a car scanner at your disposal is not a waste of money, but a profitable investment that will save a lot of money in the future.

Characteristics and capabilities of the ELM327 auto scanner

In the delivery set you will find the elm327 bluetooth car scanner itself, for diagnosing the car, as well as a special disk with basic software and elm327 instructions. As a rule, no one uses the disk (since it is in English). Everyone immediately goes to the Internet and downloads the most suitable program, we will talk about them below. The principle of operation of the scanner is extremely simple - you connect the adapter to the engine control unit, then find it via bluetooth using any supported device (smartphone, tablet, laptop), open a pre-installed program and all the data is already before your eyes.

Now in more detail about the tasks that this device can help you perform:

  • Monitoring the performance of sensors installed on your car;
  • Identifying failed sensors and checking the correctness of sensor readings;
  • Monitoring and reading error code indicators (explanation of the meaning of each code);
  • Possibility of self-resetting errors in real time;

In general, the capabilities of the EML327 Bluetooth auto scanner directly depend on the software that you have installed.

As mentioned above, the design of the auto scanner is quite compact; its main part is occupied by a connector with which it connects to a special diagnostic socket on your engine control unit. The rest of the device is occupied by a bluetooth module and a chip with a data processing chip.

If you don't know where the engine control module diagnostic connector is located, try looking in the following places:

  • Under the fuse box cover;
  • In the glove compartment (For example, this is a Renault car);
  • Under the instrument panel.

Compatibility and principle of operation of the ELM327 Bluetooth auto scanner

The ELM327 autoscanner works by communicating between the adapter and the ECU via a special OBD-II (On Board Diagnostic) protocol. It is necessary to properly connect to the engine control unit.

Be sure to check the compatibility of your car’s ECU with this protocol. This standard has been supported by all American cars since 1996, and by European cars since 2001 for gasoline engines, and since 2004 for diesel engines. To use a car scanner on a domestic car, check the model of the installed ECU (read about this below).

List of cars compatible with OBD2 protocols

For greater convenience, we have prepared a list of supported cars, protocols and car brands that are absolutely compatible with the OBD2 standard.

ISO 15765-4 protocol

  • Opel;
  • Ford;
  • Jaguar;
  • Renault;
  • Peugeot;
  • Chrysler;
  • Porsche;
  • Volvo;
  • Mazda;
  • Mitsubishi.

ISO 14230-4 protocol

  • Daewoo;
  • Hyundai;

ISO 9141-2 protocol

  • Honda;
  • Infinity;
  • Lexus;
  • Nissan;
  • Toyota;
  • Audi;
  • Mercedes;
  • Porsche.

J1850 VPW protocol

  • Buick;
  • Cadillac;
  • Chevrolet;
  • Chrysler;
  • Dodge;
  • Isuzu.

J1850 PWM protocol

  • Ford;
  • Lincoln;
  • Mazda.

To ensure proper operation of the auto scanner for diagnostics, you need to have a device with installed and configured software (smartphone, tablet, laptop or even desktop computer). You can use the included software, or find a suitable program on the Internet (if for some reason you are not satisfied with the included software). If elm327 does not connect to the ECU, you need to find out what the reason is - a defective auto scanner, or simple incompatibility.

The ELM327 autoscanner can work not only via bluetooth, but also via wi-fi networks or using a USB cable. The standard size of an auto scanner is approximately 5x3 centimeters, but there are also smaller versions.

Car scanners operating via bluetooth are the most popular, since their design is much more reliable, and working with them is the simplest, most convenient and intuitive. In addition, the ELM327 1.5 series car scanners are suitable for most vehicles. By clicking on the link, you can buy an ELM327 auto scanner from a trusted supplier.

Now on the car scanner market you can find models of the 1.6 and 2.1 series, but you should not buy them, since these devices have a number of limitations, in particular they relate to compatibility with the ECU of many car brands. So be sure to check which series adapter when purchasing. If the auto scanner does not connect to the ECU, be sure to contact technical support and clarify the reason.

Programs for working with the ELM327 auto scanner

You can find a lot of software on the Internet - these are diagnostic programs that will be compatible with the ELM 327 BLURTOOTH 1.5 series auto scanner. There are both free programs and paid diagnostic programs. The most popular at the moment are programs developed for the Android OS, since they can be used via a tablet or smartphone. Such programs for elm327 support the ability to transfer data via Bluetooth.

In general, this kind of software can be installed from the disk that comes with the auto scanner, but you can also find it on Google Play and do not bother connecting your smartphone or tablet to the computer to install these programs. Below you can read about the most popular elm327 programs and how to use these programs.

TORQUE program

This program is the undisputed leader in the software market, there is both a PRO and LITE version (paid and free). So you will be faced with a choice - buy the version with maximum functionality, or use the free version with limited functionality. In the free version you can check the functionality of your car components, as well as reset errors. The difference between the paid and free versions is the number of car parameters displayed (there are many more in the paid version).

What Torque can offer:

  • Scanning car engine errors;
  • A special panel displaying vehicle parameters in real time;
  • Checking the correct operation of the oxygen sensor (lambda probe);
  • Detecting and displaying problems in the car detected by sensors;
  • Displaying errors with a large set of their parameters;
  • Calculation of fuel consumption, cost of travel;
  • If you install the Track Recorder plugin, you can record a video of the trip and overlay it with sensor readings on a particular section of the trip to identify errors or problems that may have arisen along the way;
  • For programmers who want to somehow modify the program, access to the source code is provided, which will allow you to modify the program to suit your needs.

One of the shortcomings of the program is an incomplete translation into Russian, which is of course a little depressing, but judging by the ratings on Google Play, few people care. Here are video instructions for setting up the program and further working with it:

After watching the video, you will probably fully understand all the nuances regarding working with this program.

Car Doctor OBD program

This program is designed to read current parameters and errors from the vehicle control unit and transfer them to the reader using the OBD2 standard. The program is completely Russified and is suitable for diagnosing cars both domestic and for models produced in other countries of the world. This program is fully compatible with the ELM327 auto scanner.

What the Auto Doctor OBD program can offer:

  • Reading error codes and recognizing them;
  • Possibility of resetting errors in real time;
  • Determination of the current state of the car using sensors (revolutions, load, coolant temperature, fuel system, vehicle speed, average fuel consumption, air pressure, ignition timing, intake air temperature, mass air flow sensor indicators, throttle position, lambda probe indicators, fuel pressure level , and other indicators, depending on the capabilities of your car’s ECU);
  • Accurate determination of the VIN number of the car body.

We can say that this application takes a solid second place after the previous one. You can see a lot of positive reviews about it on Google Play.

You can also watch a detailed video with instructions for working with this program:

OpenDiag Mobile program

The program is perfect for owners of fuel-injected cars of the VAZ, GAZ, ZAZ and UAZ families. Simply put, this program is designed exclusively for domestic cars. The program runs on Android and is entirely in Russian. The pairing with the ELM327 auto scanner is excellent, all functions work flawlessly. By the way, the functionality of this program is very extensive, and even somewhat greater than that of its analogues. But, as mentioned earlier, this program is exclusively for domestic car brands.

Here is a list of ECUs with which you can safely use this program:

VAZ family

  • BOSH ECU - M5.4 R83 series;
  • BOSH ECU - M1.5.4 E2 series;
  • BOSH ECU - MP 7.0 E3 series;
  • BOSH ECU - MP7.0 E2 series;
  • BOSH ECU - M7.9.7 E3/E4 series;
  • BOSH ECU - ME series 17.9.7
  • BOSH ECU - M7.9.7 E2 series
  • ECU January - series 5r83;
  • ECU January - Series 5 E2;
  • ECU January - 7.2 E2 series;
  • Itelma - version VS5.1 E2;
  • Itelma - version VS5.1 R83;
  • Itelma and Avtel - version M73 E3;
  • Itelma - version M74;
  • Itelma - version M74K;
  • Itelma - version M74CAN;
  • Itelma - version M74CAN MAP;
  • Itelma - version M75;

GAZ and UAZ family

  • Mikas - VS8 E2 series;
  • Mikas - Episode 11 E2;

ZAZ family

  • Mikas - episode 10.3/11.3
  • Mikas - Episode 7.6

Compatibility of programs with reading devices

As a rule, most of the released programs can only support devices on the android OS (android), but some programs can also connect to the iOS OS

Where to buy a high-quality auto scanner ELM327

On the modern market you can find many fakes of the ELM327 BLUETOOTH car scanner. It is very important to choose a proven car scanner model and buy it from an official distributor. To avoid falling for scammers, you can buy a car scanner by following this link. There you can buy a good, licensed car scanner, suitable for all brands of cars, at a competitive price, and not worry about its quality. Car diagnostics and operation will become an interesting and exciting activity for you if you approach them wisely.

First, make sure you have an OBDII ELM327 adapter with Bluetooth connection type.

You need to insert it into the diagnostic connector (also known as OBD2 connector) and turn on the ignition or start the engine. If your adapter has a power button on its body, press it.

Step #1: Set up a connection with the adapter in the Bluetooth system settings of your phone or tablet.If you have already done this, or there is no Bluetooth section in the system settings of your device where you can add a device (this is often found on multimedia systems), proceed to step No. 2.

ATTENTION! Depending on the Android version, the steps required to pair your phone with the adapter may vary!

Open your phone's system settings (Android settings, not Car Scanner) and go to the Bluetooth section. Turn on Bluetooth.

You need to add a new Bluetooth device. In some versions of Android, the search for Bluetooth devices begins immediately after going to the Bluetooth section and turning on Bluetooth, while in others you need to select “Add a new device” (the name may also differ).

Wait a little while Bluetooth devices nearby are detected and find your adapter in the list of detected devices.

Usually the adapter is called “OBDII”, “obd2” or something like that. If you have a branded adapter, then its name may be similar to the manufacturer’s brand name (for example, “Viecar”, “VLink”), etc.

ATTENTION! The adapter is never named by your vehicle's brand or model and is never called "MY CAR". Do not confuse the adapter with your car's multimedia system!

Click on the adapter. Many adapters require you to enter a PIN (password).

Typically the PIN code is "0000", "1234", "7890" or "1111", but if these passwords do not work, consult the documentation from your adapter or your retailer.

Step #2: Selecting an adapter in Car Scanner.

Open Car Scanner and go to settings (gear button in the upper right corner)

Select "Connection"

Select connection type: Buetooth (do not select Bluetooth LE (4.0) - this is a completely different communication technology!)

Click on the “Select device” button. You will be taken to a window to search for nearby Bluetooth devices.

Wait until your adapter is detected.

Click on it.

That's all, the connection setup is complete. Now you just need to click on the big green “Connect” button on the main screen of the program.

Function for reading trouble codes (DTC) from engine sensors, electronics, and other components: displaying a set of parameters, describing the meaning of each digital combination;
2. Export data to a PC, print them;
3. Display the current status in metric or American systems of measures;
4. Saving indicators, real-time display, plotting graphs;
5. Erasing identified faults;
6. Reset Check Engine;
7. Accounting for the time required for acceleration using a counter;
8. Monitoring of sensor indicators, detection of failed points;
9. Function for calculating fuel consumption, cost of covering certain distances (using software);
10. Alarm signal, set to indicators such as the temperature to which the coolants reach, speed and engine speed;
11. Sending logs of values ​​received from sensors to an Internet server, then opening access to viewing the route, values ​​of sensor readings at different time intervals;
12. Option to independently download or configure a set of OBD2-PIDs, which are determined by the vehicle manufacturer;
13. Displaying from 3 to 15 screens with the status:
revolutions produced by the engine;
current speed limit;
readings obtained by the accelerometer;
the temperature to which the coolant has reached;
remaining gasoline and other fuels and lubricants;
the position taken by the throttle valve;
voltage in the internal network;
inlet air temperature parameters;
the level of load experienced by the engine;
travel time;
distance traveled.
14. Accurate determination of the VIN of the vehicle body;
15. Ignition advance option;
16. Indicators relating to air flow rates in different time periods (long-term, short-term, mass);
17. Checking the brake system and gearbox.

OBD (On-Board Diagnostic) means diagnostics and monitoring of the main components of a vehicle (chassis, engine and some auxiliary devices). To carry out self-checking of systems, the ELM327 diagnostic adapter is most often used - a compact device that transmits data on the operation of the car in real time. All you need to use ELM is a PC running Windows OS, a phone or tablet running Android or iOS. If we talk about how to use the ELM327, then even a novice car owner can cope with connecting the device.

However, before you start using the device, you need to check the compatibility of the diagnostic scanner with your car.

What cars is the scanner compatible with?

To determine which car scanner is suitable for a personal car, it is enough to determine the data exchange protocols. To do this, you need to look at the OBD-2 block and clarify which contacts are present on it:

  • The presence of pin 7 (K-Line) indicates that the ISO 9141-2 protocol is used for diagnostics. Such diagnostic connectors are used in cars made in Asia and Europe.
  • Pins 4, 5, 7, 15 and 16 indicate the ISO14230-4KWP2000 protocol, which is commonly used on Daewoo, KIA, Hyundai, Subaru STi and some Mercedes models.

In all the cases described above, you can safely use the ELM327 scanner. In addition, it will work seamlessly with the following protocols:

  • SAE J1850 PWM/VPW;
  • ISO 15765-4 CAN 29/11 bit 250/500 Kbaud;
  • SAE J1939.

As a rule, the ELM327 car scanner can be installed and connected to any car without any problems.

How to connect on Android

To connect the ELM327 scanner, a special socket is used, which is located under the steering block of the car (in the passenger compartment).

Healthy! If the scanner is installed on a VAZ and other domestic cars produced before 2006, then most likely you will need to use an adapter or adapter.

  • Download the small Torque utility from Google Play. This application is considered the best, as it allows you to additionally read car system errors.

  • Connect the ELM327 to the appropriate connector.
  • Start the car engine.
  • Activate Bluetooth on your mobile device.
  • Go to your smartphone settings and go to “Bluetooth Wireless Networks”.
  • Click on “Search for new equipment”.
  • Wait until the list of available devices is displayed on the phone screen.
  • Select OBD 2 from them and connect to it. To do this, you need to specify a special pairing code, most often it is 1234 or 0000.
  • When the ELM 327 bluetooth connection is completed, you can proceed to the settings. To do this, go to Torque and select “OBD 2 adapter settings”.
  • Next, you need to select the Bluetooth device, that is, the ELM 327 scanner itself.

After some time, the connection will be established, and you can begin diagnosing the vehicle systems.

Program interface

If we talk about ELM 327 interface OBD 2, then it is intuitive. After establishing the connection, you need to wait until the flashing icon with the image of the car stops blinking. If everything was correct, then the device will immediately start working.

Let's figure out how to use the auto scanner, or rather, which of the Torque program icons will interest us most:

  • OBD Check Fault Code - allows you to read and decipher possible vehicle errors.
  • Realtime Information - counters displaying engine parameters in real time. The user can independently select and add the counters he needs. To do this, click “Add Screen”.

  • Map View - displays the route of travel.

While the car is moving, the driver can monitor the indicators of pressure sensors, speed, fuel consumption and much more.

If you want to receive more detailed data about car systems, it is recommended to connect to the ELM scanner via a PC.

How to connect on Windows

To figure out how to connect the scanner to your computer, you need to download the ScanMaster program.

Healthy! Before using a program downloaded from the network, it must be installed correctly. To do this, first find a file called “Key” or “Keygen” and generate an access key. After this, you can run the installation file with the extension “.exe”.

After this you need:

  • Connect the scanner to the connector in the car.
  • Start the car engine.
  • Go to your computer's control panel and go to the "Bluetooth Devices" section.
  • Click “Add device” and check the box next to “Device is ready to be discovered” and select “Next”.
  • It will search for available devices for some time, after which the autoscanner will connect to the laptop.
  • Click “Next” again.
  • In the window that appears, you must enter one of the standard codes: 0000, 1111, 1234 or 6789.
  • Click “Next” again.
  • Wait for the device to automatically integrate with the PC and click “Finish”.

This completes the installation of the scanner software.

If you are an ardent fan of Apple products, and the option of connecting to a PC or Android smartphone does not suit you, then you should purchase a special ELM 327 Wi-Fi model, which can be connected to any iOS device.

How to connect to iPhone or iPad

To get your own diagnostic center to check the operation of a vehicle, it is not necessary to connect to the scanner via Bluetooth. More modern ELM models are equipped with a Wi-Fi module, which allows you to use almost any portable device to receive data.

Let's look at how to establish such a connection:

  • Connect the scanner to the connector in the car.
  • Go to the section responsible for wireless connection settings and select the “CLKDevices” network.
  • There will be a blue arrow on the right that you need to click on.
  • In the window that appears, you need to enter the IP address and router information: 192.168.0.11. You also need to specify the standard subnet mask: 255.255.255.0.
  • Just below you need to specify port 35000.

This completes the setup. Knowing how to use the ELM 327 scanner, it is enough to install any application for quick diagnostics and enter the same IP and port parameters in its settings.

However, it is worth considering that difficulties may arise when setting up private scanners.

The most common connection errors

Problems that may arise during connection:

  • The scanner does not connect to the ECU. This can happen for several reasons: the device is not suitable for the make/model of the car, the adapter or program is incorrectly selected. Sometimes the driver forgets to go through initialization. More often than not, connection does not occur due to a banal mechanical failure - the fuse that is responsible for the operation of the OBD II connector has failed.
  • ELM327 does not show real-time data (eg fuel consumption). The fact is that this function is only available while the car is moving.
  • The autoscanner does not read or reset errors. Often, a running engine is needed to activate the device, so simply starting the engine is enough. Some cheap ELM327 models do not know how to reset ABS errors, this can be solved, but modification of the device is required.

In custody

ELM327 is a compact device that will allow you to significantly save on car diagnostics, it is easy to use and allows you to output data to almost any PC or phone. However, before connecting the auto scanner yourself, it is worth studying the video, which clearly shows the process of using the ELM.

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