10 best programs for car diagnostics – rating 2022

If something is wrong with the car, it is not always possible to immediately understand what the reason is. Especially in new cars with a bunch of electronic systems and assistants. The solution to the problem is diagnosis. However, in specialized services it costs money, and the queue lasts for several days and even weeks. That's why it's useful to know how to diagnose a car yourself using a smartphone or computer.

Why do you need car diagnostics?

To put it as simply as possible - in order to understand why the alarming yellow or, even worse, red light on the instrument panel came on. Namely, an indicator indicating a sudden breakdown or malfunction of the engine, transmission, fuel supply system, ignition, gas distribution, air conditioning, etc.

All these processes in the car are controlled by an electronic control unit (ECU). It collects data from several dozen sensors, processes it and transmits commands to executive nodes. In case of malfunctions, it is signaled by an indicator, for example, Check Engine.

To understand which component or unit is damaged, the car is diagnosed using an Android application or a computer program. This service is successfully performed at any service station, but you can also do it yourself. Save a few thousand rubles, at a minimum.

In our opinion, it is possible to use Android or IOS based applications for car diagnostics. However, if the scan produces serious error codes (a malfunction in the engine or transmission), it is advisable to repeat the procedure with professional technicians.

For scanning, you can also use special devices, for example, an inexpensive multi-brand Rokodil ScanX scanner.

The main advantages of this particular adapter are its compatibility with most cars produced in 1993 and accurate diagnostics of all components and assemblies. It is also worth noting the presence of Bluetooth version 4.2, which will allow you to connect the device not only to Windows or Android, but also to iOS

Connecting the OBDII adapter

In Europe, this connector appeared only at the beginning of the 2000s. Today you will no longer see a car without an “On-board Diagnostic 2” system, except on Japanese cars from the 90s. For the CIS auto segment, this connector became mandatory in 2008.

OBD2 is a simple and therefore quite powerful tool for correcting settings and resetting errors, as well as diagnosing a malfunction in a car. What’s most interesting is that it allows you to diagnose or reset errors yourself , without resorting to the help of service technicians.

How to connect (diagram):

Step 1 . In order to start connecting the adapter, make sure that you have exactly the scanner we are talking about. Its full name is OBD2 ELM327, and the most common type of connection to our Android-based portable electronic device (smartphone or tablet) is Bluetooth.

Step 2. Next, find the OBD2 connector in the car. If you cannot find it, then open the technical manual for the car or simply Google the location of the connector in your car model.

Step 3: Insert the adapter into the connector. Its shape is that of a rounded trapezoid. If the adapter has a power button, feel free to press it. Next, you need to turn on the ignition or start the car engine.

Establishing a Bluetooth connection between a multimedia device and an adapter.

Important! Depending on the version of Android used and the model of tablet or smartphone, the procedure will differ, but only slightly - the general plan of action is the same for any device.

Step 4: Open your phone's settings and find the Bluetooth section. In some models of multimedia devices, the search for new connections will begin automatically, but in others you will need to start it manually by clicking on “Search” or “Search for new devices.”

Step 5. In the list that will be shown to you based on the search results, find your OBD2 adapter. The name can be the model of the adapter, or it can be the “name” of the manufacturer. In any case, you won't be confused. The main thing is not to confuse it with the car’s multimedia system and not to select MY CAR or the name of the car model.

Step 6: Click on the adapter. If necessary, find it in the documentation for the adapter. Typically these are 4 repeating digits: “0000” or “1111”.

How to use such programs?

In defense of programs for reading car errors for Android, we emphasize that they are much easier to use than software for a PC. How is the scan carried out?

• Make sure that your smartphone has a Bluetooth module;

• Download the car diagnostics application for Android in Russian (below we provide a list of the best);
• Scanning is carried out using a special connector (scanner, adapter), which is connected to the car via the OBD 2 connector. The output is designed to transfer data from the car’s on-board computer to software for reading error codes (a program on a PC or a smartphone with Android). The scanner is connected to the operating system of the head unit via Bluetooth or Wi-Fi (the first is preferable). The adapter is quite inexpensive - about 1500-3000 rubles, you can also order it for $10 from Aliexpress. Scanners with the elm327 chip are very popular; they integrate perfectly with programs for car diagnostics via Android.

• So, the adapter is connected to the OBD2 port. The connector is most often located under the steering wheel, but can be moved to another sector. The shape is trapezoidal, with 16 contacts (difficult to confuse with something else).
• After connecting the scanner to the connector, you should synchronize it with Android. Turn on Bluetooth on your phone and start searching for devices. Once the OBD2 module is detected, connect to it. If prompted for a password, enter 0000 or 1234 (or look for the password in the scanner instructions);
• Now start the car;
• Launch the car diagnostic program for Android in Russian;
• Further actions depend on the program, but, in general, all you need to do is run the diagnostics and wait for its results;

• The latter are issued in the form of codes. To check errors, you need to decipher them using tables from the Internet or in the program itself.

Methods for conducting self-checks

There are several ways to test a car yourself. In general, they can be divided into computer and mechanical diagnostics.

Since cars are stuffed with all sorts of electronics, diagnostics of the car’s auto electrics are necessary from time to time. Based on the need for testing, modern car models are equipped with a diagnostic connector. It is usually located near the steering column. Today there are a large number of testing devices. The choice of a specific device depends on the car model and the capabilities of the buyer.

• reads error codes from the memory of the control unit;
• deciphers codes;
• qualifies codes as current and established;
• allows you to obtain engine test parameters;
• carries out operational control of systems;
• resets errors, erasing them from memory;
• allows you to flash (reprogram) devices.

The easiest way to diagnose a vehicle is with a special scanner, which must be selected according to the car model. True, there are universal devices with which you can carry out self-diagnosis yourself. These devices allow you to directly connect to the control unit and read the necessary information.

Using a scanner, you can obtain readings from meters, sensors, and analyze the operation of automotive systems and components. To effectively use a car scanner for diagnostics, you need an electrical diagram, which can be found in the operating manual for a specific machine (the author of the video is Andrey Toskin).

Additional diagnostics are necessary since the control unit cannot paint a complete picture of the vehicle's condition.

What do you need if you don't have a scanner?

1. Device for displaying and processing received data: laptop, netbook, tablet, computer. Using a home PC for diagnostics is more difficult due to insufficient mobility. You can use your phone instead of a computer.
2. To connect to the diagnostic connector you need an adapter for car diagnostics. You can purchase an adapter that is designed for use on a specific car, or use a universal device. An example of such a device is the K-Line adapter, which is suitable for many cars, both imported and domestic. The adapter can connect to a computer (phone) via Bluetooth or Wi-Fi. For connection, you can also use a special cable for do-it-yourself auto diagnostics.
3. Special software. There are programs for diagnosing both specific brands of vehicles and universal ones. It is advisable to use the program for a specific car brand, since it is initially configured to work with a specific on-board computer.

TOP Android applications for car diagnostics

Well, we come to the most interesting part - a review of the best programs for car diagnostics on Android.

Carista Obd2

The application has been operating since 2013, the last update in the Play Market was released on June 30, 2022. There is a paid version with extended functionality (1 week - $10, 1 year - $40). The developer company has its own adapter - if you buy it, a month of using the Pro version is free.

According to users, this is one of the best applications for diagnosing a car on Android, even at the level of free functionality (basic engine check, gas distribution system, exhaust toxicity analysis). Advanced scanning (no worse than in a service center) allows you to test all modules of the car - anti-lock braking system, brake system, airbags, tire pressure sensors, etc.

The program also provides additional functionality - personalizing settings, unlocking hidden functions, etc.

Hob Drive

Second place in our ranking of the best car diagnostic programs for Android goes to the Hob Drive client. The application is a triple service - an on-board computer, a gasoline consumption analyzer and a diagnostic tool via OBD2/ELM327.

Both paid and free versions are available on the Play Market. The latter allows you to perform ongoing diagnostics of vehicle errors, the former provides constant monitoring and prompt notification, as well as monitoring overheating and suspicious lags.

The on-board computer records fuel consumption and performs power measurements. The program has a built-in trip planning option - estimating driving time on the remaining tank, refueling records, route statistics, and cost calculations. The interface can be customized according to your preferences; there are many built-in themes.

InCar Doc

An Android application that performs full launch car diagnostics for a scanner with an elm327/OBD2 processor.

Performs a full scan of the vehicle, with diagnostics, monitoring and statistics logging. Recognizes the cause of the Check Engine light, deciphers error codes, and clears old codes.

There is a paid version with extended functionality. It works in real time - analyzes engine parameters, fuel consumption, records gas stations, shops, services, remembers the location of the car, etc.

Programs for auto diagnostics via laptop

Computer diagnostics is impossible without the use of special programs that provide data decoding and display information. Below we will look at the main representatives of software for scanners.

OpenDiagPro

The program is a universal solution for domestically produced cars. Suitable for cars of the brands UAZ, GAZ, VAZ, ZAZ. The best option for using the ELM327 adapter. The application is most in demand and is suitable for diagnosing modern and not so modern cars.

ScanMaster ELM 2.1

ScanMaster ELM 2.1 software is a multifunctional software that works successfully with foreign and domestic cars. This applies to both professionals at service stations and novice diagnosticians planning to do the work themselves.

ForScan

The ForScan program is designed for Mercury, Mazda, Ford and Lincoln brands. Scans the sensors that are installed in the car, ABS, airbags, alarm and braking system.

Programming and configuration functions are provided. If desired, you can do chip tuning of the car. Works with Wi-Fi, Bluetooth and USB adapters.

TiggoDiag 1.2.0.3

The TiggoDiag 1.2.0.3 program is suitable for adapters based on ELM327. Suitable for Cherry and Great Vol cars. Suitable for some Mitsubishi brand models. Used to work with USB adapters.

PROScan

PROScan software is a universal solution for ELM327 scanners. The device has standard functionality and is capable of creating tables and graphs.

Using the software, you can receive information about errors and erase them if necessary. Typically used with USB scanners.

Programs for ELM327 for Android

Many programs for ELM327 scanners are distributed in two versions: free and advanced, professional (Pro). There are applications that claim to be free, but require payment for some additional features. There are also professional products that allow the use of a greatly reduced demo version to familiarize yourself with the functionality. Most scanner programs for Android support communication with mobile devices via Wi-Fi and Bluetooth.

Torque

One of the most popular programs for ELM327 scanners. There is a Russian version of the interface with minor inaccuracies and translation flaws. There are two software options available to users. One is completely free (Lite). The second (Pro) has advanced functionality and costs 165 rubles.

Even the free version has very good features. These include the following functions:

• Check-Engine error detection;
• resetting fault codes and storing them in a log;
• displaying information from oxygen sensors;
• fuel consumption accounting;
• monitoring of a number of parameters with display of indicators on the desktop;
• informing about the achievement of critically harmful/dangerous parameter values;
• ability to select parameters for tracking;
• customizing panels on the desktop;
• recording geolocation data.

The basic version has good functionality for diagnosing basic vehicle systems, monitoring important parameters while driving, and eliminating some errors. The Pro version is characterized by expanded functionality for diagnosing and correcting errors, including deciphering codes.

OpenDiag Mobile

The program was developed by Russian specialists and is intended to work with domestic fuel-injected cars. Among the advantages are an authentic Russian interface and a good set of free functions, as well as the ability to communicate via a USB cable (in addition to Wi-Fi and Bluetooth).

The application provides diagnostics of the following units and systems:

• engine control (Bosch, Itelma, January, EMS, Mikas);
• anti-theft APS systems, immobilizers;
• electrical package modules (Priora, Kalina, Granta, Vesta);
• electric power steering (KEMZ, Autoelectronics, Mando, etc.);
• airbags;
• anti-lock braking system;
• heater and climate control;
• windshield wiper control unit.

The program allows you to determine the amount of fuel required for a trip, displays information about the temperature of the coolant, air, fuel pressure, etc. All information is displayed in Russian. Users who download the free application can purchase additional paid blocks if necessary.

ELM327 programs for a computer or laptop (Windows)

These elm327 programs are designed to diagnose a car using a computer and are installed on Windows-based computers. The description of the program says what cars it is intended for, as well as what types of adapters it works with - USB, Wi Fi or bluetooth.

ScanMaster ELM 2.1

The most versatile and functional elm327 program. Works great both with foreign cars and Russian-made cars. We recommend starting diagnostics with this program.

Works with adapters: USB, Bluetooth, Wi-Fi

Download ScanMaster ELM 2.1

OpenDiag

A program for diagnosing all models of the Russian automobile industry (VAZ, GAZ, UAZ, etc.). Supports several types of adapters, including elm327. This is the most convenient program for diagnosing Russian cars. If you have a Russian car, we recommend using this particular program.

Works with adapters: USB, Bluetooth

Download OpenDiag program

FORScan

This elm 327 program was created specifically for cars of the following brands: FORD, Mazda, Lincoln and Mercury. It has enormous capabilities; it scans all car components, including airbags, ABS, etc. It is possible to configure and program parameters.

Works with adapters: USB, Bluetooth, Wi-Fi

Download FORScan program

ELMConfig

This program is also for FORD cars. It can work with all car modules, and, in addition to diagnostics, provides the ability to calibrate and configure.

Works with adapters: USB

Download ELMConfig program

ScanXL

The program works great with many brands of cars and has an excellent set of functions.

Works with adapters: USB

Download ScanXL program

PROScan

This is a universal elm327 program. It has all the necessary functions: measures parameters, builds graphs, reads and erases errors and much more. Unfortunately there is no Russian language.

Works with adapters: USB

Download PROScan program

ELM327 programs for iPhone and iPad (iOS)

Below are elm327 programs for use on iPhone and iPad, i.e. on smartphones and tablets with the iOS operating system. There are quite a few programs for these devices and, as a rule, they are all in English. But we still tried to choose good programs for you that are easy to learn and have a wide range of functions. Please note that Apple devices only support Wi-Fi adapters, so the programs do too.

DashCommand

A fairly good, with all the necessary features, elm327 program for iPhone and iPad. It is universal and suitable for diagnosing a huge number of cars. Easy to learn and intuitive despite the lack of Russian language.

Works with adapters: Wi-Fi

Download DashCommand for iOS

OBD Car Doctor

A simple and convenient program in Russian. Allows you to read engine operating parameters, and it is also possible to read and erase engine check errors.

Works with adapters: Wi-Fi

Download the OBD Car Doctor program for iOS

Smartphone tester capabilities

In terms of diagnostics, the functionality of the phone can be limited only by the capabilities of the application, as well as the data transmitted by the car’s diagnostic port.

In most cases, the user will have access to geolocation, and, as a result, all parameters associated with the route. The driver will be able to find out about the distance traveled, fuel consumed, the final cost of the trip and gasoline/diesel consumption.

The driver will also be able to view the readings of the main temperature sensors of the internal combustion engine and gearbox. It’s worth leaving them and monitoring the data received. It is also worth adding battery charge indicators.

Programs for Windows

In addition to mobile applications for phones running Android OS, you can use software applications for Windows OS for autodiagnostics.

• ScanMaster-ELM utility that works with any type of ELM327 adapters. The capabilities of this software are quite wide: a convenient and intuitive interface, monitoring the operation of the motor in real time, plotting graphs, viewing, decoding and deleting errors. Disadvantages of such applications: the need to purchase a license to use a number of functions and the requirement for Russification to simplify work.
• Diagnostic utility - PCMScan, which easily identifies faults in European, American and Asian cars, receives data from a freeze frame and removes errors in the ECU. To expand functionality, you can add third-party plugins. Pros: multifunctionality, free demo version. Cons: the need to purchase paid software to connect some options and Russification.
• Multifunctional auto diagnostic program for Windows OS – FORScan. Processes sensor data in real time, reads basic parameters and resets error codes. Pros: Possibility of obtaining data on almost all functional units and main car systems. Disadvantage: designed for diagnosing only 4 brands of cars - Ford, Mazda, Lincoln and Mercury.

In conclusion, it should be noted that the diagnostics necessary for the car can be performed independently, saving on expensive service stations. To do this, just purchase a diagnostic scanner and install specialized software on your smartphone, tablet or PC.

When choosing diagnostic software, pay attention to the functionality, the presence of a Russian-language menu, the ability to install additional functional plug-ins, the ability of applications to generate analytical reports, transmit data over the Internet, decipher and delete errors in the ECU. In principle, the free applications available on the Internet are sufficient to carry out most diagnostic operations. But even a paid program will cost much less than diagnostic services at car repair shops.

Sequence of further actions:

1. Park the car on the side of the road (engine running).
2. Take out the elm327 adapter.
3. Insert into the ECU connector of your car (bottom of the control panel, to the right of the steering column). A blinking light on the adapter will indicate that the connection has occurred and data is being read from the controller (ECU).
4. When the light stops blinking and lights up steadily (at this point all parameters will be read), set up Bluetooth on your smartphone: - find the already installed diagnostic program in the phone menu, - enter the program menu, - look, read and select the parameters that seem you are currently suspicious.

Programs for iPhone

Utilities for installation on iOS support Wi-Fi, which is very important when diagnosing from an iPhone. There are few such developments, but they are quite functional.

InCarDoc IPhone

Only suitable for vehicles that support OBD-II function. Works in real time.

Diagnoses parameters:

• speed;
• fuel consumption;
• revolutions;
• pressure.

Reads errors, saves parameters, clears errors. Determines the VIN number of the body, determines coordinates with GPS support. You can install the program by downloading it from the App Store.

Engine Link

One of the most popular utilities for iPhones. Works with many cars. There is a diagnostic function for diesel engine control units. Suitable for reading by ELM327 scanner (Wi-Fi version). What the program can do:

• tests emissions;
• work in real time;
• reads and resets OBD fault codes;
• displays sensor data and engine characteristics;
• MPG to calculate fuel consumption in real time;
• Full custom PID support.

Supports OBD-II and EOBD. To use the program, you need compatibility with ELM Bluetooth Low Energy (for iPhone 4 and later versions) or a Wi-Fi adapter.

Error codes and their interpretation

In cases where the scanner does not decipher the received diagnostic codes of various vehicle systems, the missing information can be easily found on the World Wide Web. OBD codes are represented by many primary sources that describe malfunctions in the operation of systems and components of a huge number of cars.

To do this, you should enter data about the digital value of the code, the make of the car, markings and characteristics of the power unit in the search bar. To obtain more accurate data, it is better to use the services of professional websites and visit forums of experienced owners of specific car models.

After connecting the adapter and installing the application on your smartphone, most systems will be controlled automatically by the program. This makes it possible not only to determine fuel consumption, but also to detect vehicle malfunctions at an early stage.

Source

EconTool ELM327 for Nissan

EconTool ELM327 for Nissan is another one of the best diagnostic programs for OBD2. Intended exclusively for petrol Nissan vehicles up to 2008 (but also works with newer vehicles). It is free, providing the same options as other similar programs, but when purchasing the PRO version it opens up an additional feature: it allows you to read and reset errors.

Attention: the utility is not suitable for diesel Nissan models!

ELMScan Toyota

If you own a Toyota or Lexus, ELMScan Toyota is a good OBD2 program in Russian. Despite the fact that the program was created specifically for the above-mentioned cars, it is also compatible with cars of other brands that have a suitable connector for connecting diagnostics. It is offered in two versions: paid and free, it has an intuitive interface, but although it is completely Russified, English terms are still found in it here and there.

ELMScan Toyota is included in the list of the best programs for obd2 diagnostics, thanks to its capabilities:

1. Reading complete information about the vehicle (model, engine size and name, VIN code and calibration id).
2. Determining errors in sensor operation.
3. Clearing fault codes.
4. Determination of motor operating parameters in real time.
5. Perform all active tests of vehicle electronic system components.
6. Display data in the form of numbers and graphs.
7. Reset ECU parameters.
8. Storing a database of fault codes.

This one of the best programs for OBD2 on Android will reveal all the secrets of the engine, transmission, cruise control, immobilizer, auxiliary security systems, suspension, electric power steering, and other vehicle sensors.

Important: in the free version of the program, support for many sensors is disabled, so for diagnostic efficiency, it is recommended to immediately purchase the full package of functions.

OBD2 synchronization with phone.

Step 1. You will need to connect to the adapter through the application. Each Android app does this differently. But usually the window with the choice of connection option is noticeable immediately. You can see the connection status by assessing the presence of indicators and information about the car in the application itself.

Step 2. Synchronization will be completed only when the application gives the appropriate signal about it: it can be shown to the user in the form of an internal notification or a pop-up line. You should see data about the car appear, as well as about its technical systems.