ELM327 Bluetooth (Wi-Fi or USB) car scanner is a device designed for scanning and diagnosing vehicle parameters, fault detection, reading and correcting problems in the computer, engine. The device operates via a smartphone or PC. Also, such scanners monitor the condition of sensors, engine and other components interacting with the on-board computer or control unit (ECU) of the car.
Self-diagnosis has become a trend in recent years. ELM327 Bluetooth scanners for car diagnostics gained popularity in 2015-2018. The main reason for the demand for adapters for car diagnostics in Russian is the cost savings on car maintenance, since such a service at a service station costs from 500 rubles to 8,000 rubles, depending on the malfunction, so the device pays for itself in 3-4 visits to a car service center.
This article provides an overview of the ELM327 Bluetooth car scanner - prices, models, manufacturers, reviews, as well as characteristics, photos and videos, describes the principle of operation of the gadget, and provides detailed instructions.
Device and diagnostics using a wireless Bluetooth auto scanner
Before you buy an ELM327 Bluetooth adapter, let’s get acquainted with the technical side of the issue and consider everything in order. What are ELM327 auto scanners? In fact, this is the name of the microcircuit. The controller was developed by the Canadian company ELMEelectronics. The internal architecture of the chip reads and converts protocol data from cars of any brand into a code that is decrypted by the program.
To read information, you need to receive it and then convert it, which is why you need an OBD II controller - a “bridge” between the on-board computer/ECU of the car and the adapter ver. 1.5 ELMЗ27.
Types of ELM327 auto scanners and which one is better to buy?
Before you buy an ELM327 Bluetooth, you need to know in advance its firmware number, protocol, and also what you plan to use to scan the car. If you have a smartphone on Android or iOS, then you can purchase a wireless option: the elm327 bluetooth or Wi-Fi auto scanner. If you don’t have a smartphone, it’s safer to use a USB device via a computer.
The table shows a list of modifications of diagnostic wireless adapters for cars, as well as a version with a wire. It’s not difficult to navigate the OBD II ELM 327 adapter models; the names speak for themselves.
It is important to know:
Firmware version 2.1 is a modification of microcircuit version 1.5, but it was not made by the developer, so for compatibility it will work without errors It is recommended to buy scanner version 1.5.
Autodiagnostics and review of modern Scan Tool Pro scanners in Russian
In the Russian market of equipment for car diagnostics, elm327 Bluetooth scanners have become very popular: Scan Tool Pro, Smart Scan Tool, Roadgid S6 Pro, Vgate . The models are translated into Russian, as is the software for them. The diagnostic scanner is based on the ELM-327 chip, and the data is transmitted via the OBD2 protocol. Models are sold with Bluetooth or Wi-fi support.
Before you buy a scanner for car diagnostics, Scan Tool Pro, read a detailed review of the device on our portal, or follow the link to the official website to order and check compatibility.
Features of ELM 327 OBD 2 Scan Tool Pro and diagnostic instructions
ELM327 functionality and list of tested parameters:
- Resetting on-board computer errors such as Check Engine.
- Reading fault codes from sensors in the engine, other components, electronics;
- Decoding indicators, errors, displaying them on the receiver device (phone, PC);
- Displaying data and errors on the vehicle's condition in real time:
Instructions for Scan Tool Pro and description of programs (Torque, Auto Doctor, OpenDiag)
The procedure for performing diagnostics through ELM327 version 1.5:
- First, find the OBD 2 16 pin connector on your car (under the dashboard near the steering wheel);
- Turn on the ignition of the car, then connect the gadget, wait until the connection occurs, the green signal lights up;
Advice:
Before purchasing a scanner, check the standard connector with 16 outputs. If you have a different connection, then buy an adapter, as in the photo (from 22 pin to 16 pin). Such adapters are sold in the official online store link, accessories also ask the operators.
- Now we act based on the model of your adapter:
3.1 If you bought a scanner with Bluetooth, then turn on Bluetooth on your smartphone and check nearby devices. A device named “Scan Tool Pro” or “OBD2 ELM327” will appear in the list. Select a scanner from the list and connect, this will last 10-30 seconds.
3.2 If you have chosen and purchased a scanner with Wi-Fi, then turn on Wi-Fi on your smartphone, search for nearby networks, a scanner named “Scan Tool Pro” or Smart Scan Tool will appear in the list. This adapter works like a Wi-Fi router, so choose this network and connect.
3.3 In addition to wireless models, you can also buy wired ELM327 scanners. The scanner is connected via a USB cable, which is included in the kit. The wired gadget only works through the PC on which the application is installed. A disk with drivers in Russian is also included with the scanner.
- The next step is to launch the application and recognize the vehicle's ECU and sensors. When diagnostics are carried out via a smartphone (iOS, Android or Windows), you will need to download a special application on Google Play or Apple Store, namely: Torque, Auto Doctor OBDII or Mobile OpenDiag. Applications are provided free of charge, in Russian. For PC use Auto Doctor OBD. Examples of applications in Russian are given below.
Torque application and types of programs in Russian
For a list of programs, as well as a description, read the detailed review article about Scan Tool Pro. Before purchasing a car scanner with Bluetooth or other modifications, download the application and make sure that it works on your smartphone without errors.
Mobile OpenDiag application and list of parameters in Russian
- The software interface (Torque, Auto Doctor OBDII or OpenDiag) is simple and clear, translated into Russian. After starting the program, if the scanner is correctly connected to the OBD connector, the application will notify you that it is ready to start working.
- Further actions depend on the installed application, since their functionality and interface differ.
- Scan for errors and eliminate them.
- See the current technical condition of the car by reading auto scanner data from sensors.
- Operation and monitoring of indicators in real time is supported.
- Monitoring the condition of the car’s working components, sensors: temperature, voltage, speed, etc.
- The device is equipped with a saving function and printing reports.
List of supported cars and checking the auto scanner for compatibility
Adapter ELM 327 OBD 2 Bluetooth Russian version - supports all cars with an OBD controller. The data transmission architecture was built using the OBDII protocol; it has been used since 1996 in the European automobile industry, and in Russia since 2001. Incompatibility is only possible with connectors, as mentioned earlier, but in this case adapters are used.
List of supported ECUs (not complete):
- BOSCH M 1.5.4 R83
- BOSCH M 1.5.4 E2
- BOSCH MP 7.0 E3
- BOSCH MP 7.0 E2
- BOSCH M 7.9.7 E3/E4
- BOSCH M 7.9.7 E2
- BOSCH ME 17.9.7
- January R83
- January E2
- January 7.2 E2
- Itelma VS 5.1 E2
- Itelma VS 5.1 R83
- Itelma/Avtel M73 E3
- Itelma M 74
- Itelma M 74 K (Classic)
- Itelma M 74 CAN
- Itelma M 74 CAN MAP
- Itelma M 75
GAZ / UAZ:
- Mikas VS 8 E2
- Mikas 11 E2
- Mikas 10.3/11.3
- Mikas 7.6
List of brands supported by the universal auto scanner for diagnostics: Mazda, Toyota, Lincoln, Ford, Lexus, Honda, BMW, Mercedes, Chrysler, Cadillac, Buick, Chevrolet, Renault, Lada, VAZ, Kia, Hyundai, Deawoo, Volkswagen, Mercedes, Audi, Peugeot, Chevrolet, Opel, Mazda, Volvo, Nissan (also Pathfinder 2000), BMW. An extended list is presented below or follow the link to the official website to order and check compatibility.
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. 
The ELM327 USB v1.5 adapter is a car scanner for diagnosing cars using a computer. The scanner supports all known protocols of the ODB2 family, which means compatibility with the vast majority of cars. Communication with a PC is supported using a wired USB interface, for ELM 327 v1.5 USB, simply insert it into the OBD-II diagnostic socket of your car and connect the cable to your computer or laptop and install the Elm327 driver. In addition, the ability to use free PC programs is a huge advantage.
OBD-2 diagnostic adapters manufactured on the basis of the latest version 1.5 ELM327 microcontroller have proven themselves to be excellent due to their quality and reliability. Programs for working with the ELM327 USB adapter have great functionality, capabilities, modern appearance and multilingual support, among them there are programs that even have many dealer functions! Among all OBDII car scanners, ELM327 USB is without a doubt the fastest in terms of establishing a connection with the control unit (ECU, ECU) of the car. Where other scanners may fail, USB will do its job perfectly. Now all the capabilities of this convenient device are available to you: you just need to buy an ELM327 USB adapter! Save time and money on trips to the service center, with the help of Elm 327 you can find out for yourself what exactly is wrong.
Elm327 USB adapter features:
- Reading and decoding fault codes
- Removing errors from the memory of the vehicle control unit (ECU) in order to extinguish the Check Engine lamp
- Reading engine operating parameters in real time
Through special free Elm327 USB programs in Russian, you can control such engine operating parameters as:
- Engine speed
- Current/maximum engine power per trip, kW or l/s
- Torque
- On-board voltage
- Coolant temperature
- Intake manifold pressure
- Mass Air Flow(MAF)
- Vehicle speed
- Calculation of acceleration time 0-100 km/h
- Calculation of braking time 110-0 km/h
- Oxygen/fuel ratio
- Ambient temperature
- CO2 emissions
- Remaining fuel
- Fuel trim
- Instant fuel consumption
- Short term fuel consumption
- Long term fuel consumption
- Absolute air pressure
- Intake air temperature
- Ignition timing
- Mass air flow
- Throttle position
- Lambda probe parameter values
- Fuel rail pressure
- and other parameters supported by the vehicle ECU
Supported OBD-II v1.5 protocols
- SAE J1850 PWM
- SAE J1850 VPW
- ISO 9141-2
- ISO 14230 KWP2000
- ISO 15765 CAN
Characteristics of the elm327 USB adapter:
- Size: 8.8 * 4.6 * 2.5 cm (will “stick out” from the diagnostic block by 6 cm)
- Weight: 130 gr.
- USB cable length: 176 cm
- Current consumption: 45 mA
- Compatibility: Windows XP/7/10
- Chipset: PIC25K80+Prolific
The ELM327 USB car diagnostic adapter operates using OBD-II protocols with:
- gasoline vehicles manufactured for the American market since 1996,
- petrol vehicles manufactured for the European market from 2001 onwards,
- diesel cars starting from 2004 production.
Only here:
- Guarantee 5 years. Branded warranty card with every order
- Each adapter is sold in beautiful branded packaging . You don’t need to come up with anything special with packaging to give our Elm327 USB scanner as a gift.
Currently, there are a huge number of offers on the market for the ELM327 diagnostic adapter at different prices, but most importantly they differ in quality, circuit design and versions. Below in the article we will analyze different versions of scanners, their functionality, and learn how to identify a “fake” ELM327.
1) Circuitry of the ELM327 scanner.
It is important to understand that the quality of the scanner and its functionality primarily depends on the components used.
Currently, ELM327 with PIC25K80 and PIC18F2480 microcontroller, regardless of version (most common versions 1.4 and 1.5).
The “fake” version of the ELM327 scanner is made on a cheaper CAN controller MCP2515, STM32F042, BK3231Q, 25K80 QBD327 has firmware that does not support, or incorrectly supports a certain number of AT commands, and there is no support for the SAE J1850 protocol (the most common versions are 2.1 and 1.5).
2) Scanner version ELM327.
Let us repeat once again that the quality of the scanner and its functionality depends only on the components used.
Currently, unfortunately, it is not possible to determine a high-quality and “fake” version of the ELM327 scanner based on the firmware version. Initially, the “fake” scanner clones had version v2.1, but later, in order to be able to somehow sell the “fake” scanners, the manufacturer deliberately changed the numbers for version v2.1 to v1.5. Thus, by purchasing a “fake” scanner on a cheap CAN controller (MCP2515, STM32F042, BK3231Q, 25K80 QBD327) with version v1.5, the user essentially receives the same fake as v2.1.
A high-quality ELM327 with a PIC25K80 and PIC18F2480 microcontroller most often has versions v1.4 and v1.5
3) How to identify a quality ELM327 scanner.
There is a fairly simple software verification method that will help identify the cheap “fake” version.
The first program with which you can determine the “fake” version of the scanner is FORScan. This program is used for diagnosing Ford, Mazda, Lincoln, Mercury and is presented on the official website of the developer forscan.org, can work with Windows-based PCs, and on mobile devices based on iOS and Android.
To check, just connect the ELM327 scanner to any car and launch the FORScan software. In the case of a “fake” clone of the scanner, the program will display the corresponding message: “Unable to connect to the car, a low-quality ELM327 clone was detected. Unlike OBDII applications, FORScan requires an adapter that is fully compatible with the original ELM327. This adapter is not fully compatible."
The second way to programmatically check the quality of the scanner is to use a terminal to connect directly to the adapter and send a series of specific commands. You can use Elm327Chat as a terminal program. Next you will need to connect it to the program and make several requests:
-------
>ATI
ELM327 v1.5
>ATAL
OK
>ATPPS
OK
>ATPP2ASV38
OK
>ATE0
OK
>ATL0
OK
>ATH0
OK
>ATR1
OK
>ATST32
OK
>ATS0
OK
>ATAT1
OK
>ATCF700
OK
>ATCMF00
OK
>ATZ
ELM327 v1.5
-------
As can be seen from the “OK” answers, this scanner has high-quality circuitry. Answer "?" on a command indicates that the scanner does not know this command and is “fake”. A high-quality ELM327 must recognize them.
The most labor-intensive way is to disassemble the scanner and look at the circuit diagram. A high-quality scanner, regardless of the scanner version, should be assembled on a PIC25K80 or PIC18F2480 microcontroller, and a “fake” version on MCP2515, STM32F042, BK3231Q, 25K80 QBD327. However, currently there are “fake” adapters made on the QBD327 controller and relabeled as PIC18F25K80. At the same time, the dimensions of the QBD327 controller are the same as the PIC18F25K80 and a fake can be identified by the following distinctive properties:
- markings are not clear enough;
- QBD327 works with a 16.000MHz oscillator, and PIC18F25K80 works with a 4.000MHz oscillator;
- the “fake” clone does not know the ATPPS command in the terminal and, when prompted, the response is “?”.
The main difference is the number of supported protocols. Scanner with version 1.5 list of supported protocols is several times larger compared to the latest scanner version 2.1. Visually, the adapters are no different from each other. The scanner version can only be determined programmatically. Information about the scanner version is displayed in almost all mobile diagnostic applications via the ELM 327 scanner.
Autocom and Delphi activator for versions 2014.3 and 2015.1.
List of protocols supported by the ELM327 v1.5 scanner:
- SAE J1850 PWM (41.6Kbaud).
- SAE J1850 VPW (10.4Kbaud).
- ISO9141-2 (5 baud init,10.4Kbaud).
- ISO14230-4 KWP (5 baud init,10.4 Kbaud).
- ISO14230-4 KWP (fast init,10.4 Kbaud).
- ISO15765-4 CAN (11bit ID,500 Kbaud).
- ISO15765-4 CAN (29bit ID,500 Kbaud).
- ISO15765-4 CAN (11bit ID,250 Kbaud).
- ISO15765-4 CAN (29bit ID,250 Kbaud).
- A.SAE J1939 CAN (29bit ID,250*Kbaud).
- B.USER1 CAN (11*bit ID,125*Kbaud).
- C.USER2 CAN (11*bit ID,50*kbaud).
And here is the list of protocols that the ELM327 v2.1 scanner supports:
- ISO9141-2;
- ISO14230-2 (KWP2000);
- SAE J1850 VPW;
- SAE J1850 PWM;
- ISO 15765-4 CAN.
Undoubtedly the list is smaller. So what should you choose, v2.1 or v1.5? To select a scanner, you must adhere to the following recommendations:
1. Decide which program you will work with. View the list of protocols that are supported by the program you have chosen and compare.
2. ELM327 v2.1 only work with cars that have a CAN bus. There is a very low probability that the ELM327 v2.1 scanner will work with cars that have K-Line.
3. The ELM327 v1.5 scanner works both with cars with a K-Line and with cars with a CAN bus.
4. Look at the ECU of your car for the type of protocol communication.
If it is impossible to complete these steps or is costly by certain standards, then it is better to opt for the ELM327 v1.5 scanner. The cost of the ELM327 v1.5 scanner is higher than the cost of the ELM327 v2.1 scanner, but not significantly. The cost of the ELM327 v1.5 scanner is on average 20% higher than the cost of the ELM327 v2.1 scanner.
