Best OBD2 Scan Tool Software: Top Picks for Professional Car Diagnostics

In today’s automotive world, understanding your car’s health is no longer exclusive to mechanics. With the right OBD2 scan tool software, you can diagnose issues, monitor performance, and potentially save significant repair costs, all from the convenience of your PC or laptop. The market is flooded with options, but not all OBD software is created equal. Many prioritize flashy interfaces over robust functionality. That’s why we’ve compiled a list of established and reliable Best Obd2 Scan Tool Software packages, focusing on solutions with a proven track record of expertise and depth.

This guide cuts through the noise of mobile apps and focuses on the power and reliability of PC-based OBD2 diagnostic software. While mobile apps have their place, professional OBD2 software for laptops offers a level of functionality and depth that smartphone applications often lack. Many mobile apps are developed by freelancers and may lack long-term support and comprehensive features compared to dedicated PC software built by companies with years of experience in automotive diagnostics. Since the early 1990s, PC-based OBD-II software has been the standard for professionals, offering in-depth diagnostics and features that go beyond basic code reading.

While many smartphone OBD2 apps compensate with user-friendly interfaces, they often sacrifice core functionality. For serious car diagnostics, PC software remains the superior choice. Having rigorously tested numerous car software packages over a decade, we present our top 7 recommendations for best OBD2 scan tool software.

Our advice is to explore each option, visit their websites, assess their trustworthiness, and choose the OBD2 scan tool software that best fits your specific needs and technical expertise. To save you time, we’ve summarized each software package in bullet points, highlighting their key features and benefits.

It’s important to remember that all OBD2 software shares a fundamental purpose: diagnosing vehicle faults. However, the depth of diagnosis varies significantly. Some OBD scan tools detect a wider range of fault codes and access more vehicle systems than others. The key difference lies in the quantity and detail of errors detected.

DIY OBD2 diagnostics empowers car owners to understand their vehicle’s issues like a mechanic. However, it’s crucial to remember that OBD2 scan tool software identifies problems, but physical repairs are still necessary. Clearing a fault code doesn’t fix a broken part.

Common Features of Top OBD2 Car Scanner Software

Paid Software: These are not free OBD software options. For free basic OBD2 software, EasyOBD is a viable (albeit limited) option for ELM327 scan tools.
Windows Focus, with Mac Options: The automotive industry predominantly targets Windows. However, we’ve identified and reviewed two excellent OBD2 software options for macOS.
Expert Reviews: Our reviews are based on extensive technical and practical automotive experience, totaling 60 years combined. We strive for unbiased evaluations, focusing on objective features and performance.
ELM327 Compatibility: All reviewed software supports ELM327 OBD2 interfaces, including Bluetooth, WIFI, and USB connections.
Unidirectional Functionality: These software packages are primarily unidirectional, meaning they read data from the vehicle. Bidirectional control, which allows sending commands to the vehicle, typically requires high-end OEM scan tools costing upwards of $1000. For advanced workshop-grade OBD2 scanners with bidirectional capabilities, explore our blog.

While Windows dominates, there are robust OBD2 software options available for macOS users.

Understanding OBD2 Scanners and Diagnostic Tools

The evolution of automotive technology has been remarkable. From simple machines, cars have transformed into complex systems packed with technology, from navigation and air conditioning to advanced engine management. Modern vehicles are equipped with sophisticated onboard computers that monitor everything from optimal routes to engine performance and potential issues.

Most cars today have an OBD2 port, providing access to data from the engine control unit (ECU). This standardized port allows technicians and car owners to retrieve valuable information about the vehicle’s health and diagnose potential problems.

Connecting to your car’s OBD2 port is the first step in using diagnostic software.

Accessing this ECU data requires a computer and specialized OBD2 software. This demand has fueled the development of numerous OBD software solutions for laptops and mobile devices, empowering users to tap into their car’s diagnostic information.

Typically, an OBD2 scan tool consists of two parts: a hardware interface (cable or adapter) and the OBD-II software. The hardware connects the car’s OBD2 port to your computer, and the software interprets the data, presenting it in a user-friendly format. The primary goal of best OBD2 scan tool software is to assist in vehicle maintenance, enabling early issue detection and potentially extending the vehicle’s lifespan.

Below are seven car diagnostic software packages from different companies, representing what we consider the best OBD2 scan tool software currently available for Windows and Mac laptops/PCs.

(Disclaimer: We have no affiliate links here. These recommendations are based on our expert opinion and intended to help you find the best diagnostic tools for your needs.)

TOAD PRO

TOAD (Total OBD & ECU Auto Diagnostics) PRO is a comprehensive professional OBD2 software suite designed for in-depth vehicle diagnostics. It boasts “car-manufacturer-approved” applications capable of performing thorough health checks and diagnosing over 15,000 common car problems. For advanced users, TOAD PRO even includes ECU remapping software for performance tuning and fuel optimization.

TOAD PRO offers software capabilities typically found in professional repair shops and dealerships, making advanced diagnostics accessible to a wider audience.

A key strength of TOAD PRO, beyond its extensive vehicle compatibility, is its robust live data monitoring with customizable graphs and visualizations. This allows users to see real-time sensor readings and identify subtle issues.

TOAD PRO is suitable for both car owners wanting to perform DIY diagnostics and save money on repairs, and professional mechanics needing advanced diagnostic and analysis capabilities. Its global user base spans law enforcement, dealerships, car enthusiasts, and manufacturers in approximately 80 countries.

Benefits of TOAD PRO:

Check Engine Light Diagnostics: Provides detailed descriptions of detected problems, aiding in accurate repairs.
Enhanced Fault Code Detection: Identifies “extra” OBD fault codes often missed by basic scanners.
Cost Savings on Repairs: Pinpoints faulty components, enabling informed parts purchasing and mechanic negotiations.
Performance Tuning: Includes ECU remapping for optimizing car performance and fuel efficiency.
Touchscreen Optimization: Ideal for devices like Surface Pro, enhancing usability in workshop environments.
Fuel Efficiency Improvement: Potential to optimize fuel consumption through diagnostics and tuning.
Engine Longevity: Proactive diagnostics can contribute to extended engine life.
Real-time Data Monitoring: Provides live insights into vehicle operation.
DIY Repair Assistance: Empowers users to diagnose and address car issues independently.
Peace of Mind: Ensures vehicle health and safe operation.
Visual Data Representation: Displays real-time data in tables and customizable graphs.

Learn more at the TOAD website…

AutoEnginuity’s ScanTool

AutoEnginuity’s ScanTool stands out for its brand-specific diagnostic options, covering a wide range of manufacturers including BMW, Ford, GM, Chrysler, Nissan, Hyundai, Kia, Land Rover, Jaguar, Honda, and Porsche. ScanTool is compatible with both Windows and iOS.

This OBD2 scan tool software enables users to quickly assess trouble codes, vehicle sensors, and emissions readiness (IM240) to determine necessary services. Its depth of coverage is a key differentiator.

ScanTool accesses systems beyond basic engine diagnostics, including ABS, airbag, transmission, instrument cluster, and other controllers. This depth extends to live data, bidirectional controls, adaptive resets and learns, and comprehensive system tests.

The primary drawback of AutoEnginuity ScanTool is its higher price point. It is geared towards professional mechanic workshops needing OEM-level bidirectional functionality and frequent use across numerous vehicles.

Benefits of AutoEnginuity Scan Tool:

Data Logging: Logs data in XML format for browser viewing and CSV for spreadsheet analysis.
Customizable Sensor Data Display: Allows users to adjust sensor sampling rates, ranges, units, and scaling.
User-Friendly Data Presentation: Presents data in a clear and understandable format, rather than raw data streams.

Learn more at the AutoEnginuity website…

PCMScan

PCMScan is a feature-rich, generic OBD-II diagnostic software supporting a wide variety of OBD hardware interfaces. It offers real-time data visualization through charts, logging, viewing, and playback. PCMScan also provides access to Diagnostic Trouble Codes (DTCs), freeze frame data, and other vehicle information. This universal scanner software is compatible with US, Asian, and European vehicles manufactured from 1996 onwards.

However, a significant downside of this otherwise excellent Windows OBD2 software is that it hasn’t been updated in over 7 years. This means it lacks potentially hundreds of new PIDs (sensor data) incorporated into newer vehicles and other OBD2 software applications. This suggests either development abandonment or a shift in focus by the developers.

Benefits of PCMScan:

Customizable Dashboard: Users can personalize the software interface to their preferences.
Dyno and Drag Features: Includes performance measurement tools.
Data Logging: Records diagnostic data for later analysis.
DTC Reading and Clearing: Reads stored and pending Diagnostic Trouble Codes and clears the Check Engine Light.
Freeze Frame Data: Accesses and clears stored freeze frame data.
Extensive Trouble Code Definitions: Supports thousands of vehicle trouble code definitions.

Worthy Features Tested:

Printing and Print Preview: Full support for printing diagnostic reports and data views.
OBD-II Terminal: For advanced users, allows direct communication with the vehicle’s OBD-II system using custom commands.
Javascripting Support: Enables custom calculations and data manipulation using Javascript.
Configurable Alerts System: Allows users to set up alerts based on specific parameter conditions, providing warnings or bookmarks in logged data.
Unit System Flexibility: Supports both English and Metric (SI) unit systems.
CSV Data Export: Exports log files to .CSV format for easy viewing in spreadsheet programs like Excel.
Real-time Stamps: Exports data with real-time stamps for correlation with external data logs.
PID Priority Assignment: Allows prioritizing PIDs to optimize data capture rates.
Wide Interface Support: Compatible with various interfaces including Autotap, VIA, Multiplex Engineering, ELM320, ELM322, ELM323, ELM327, and any SAE-J2534 compliant OBD-II interface.

Learn more at the PCMScan website…

ProScan

Acquired by Total Car Diagnostics in 2015, ProScan OBD2 software has been enhanced for modern vehicles, including improved support for newer sensors and vehicle technology advancements. It’s now included in the TOAD LITE package.

ProScan is recognized for its user-friendliness among Windows OBD2 software options. With a history dating back to 2003, its strengths lie in its consistent stability and development grounded in deep automotive protocol and sensor expertise. It’s compatible with any standard ELM327 hardware.

A standout feature of ProScan, less prominent in other software, is its accurate 0-60mph (100km) performance timing. This allows users to measure speed and torque gains after ECU adjustments or to assess performance improvements from aftermarket modifications.

Benefits of ProScan:

Fuel Economy Adjustment: Offers features to potentially optimize fuel economy based on driving habits.
Vehicle Connection Manager: Provides a streamlined interface for program launch and vehicle connection.
Freeze Frame Data Display: Enables monitoring of data from previous time periods.
Oxygen Sensor Tests: Displays results of oxygen sensor tests and identifies malfunctioning sensors.
One-Button Diagnostic Report Generator: Simplifies the creation of comprehensive vehicle diagnostic reports.
Emissions Readiness Monitoring: Shows vehicle emissions conformance status.
Oxygen Sensor Location and Count: Displays the number and location of oxygen sensors.
Oxygen Sensor Functionality Testing: Verifies the correct operation of oxygen sensors.
Data Recording and Playback: Records and replays diagnostic data.
Instantaneous Fuel Efficiency Calculation: Calculates real-time MPG or liters per km for MAF-based vehicles.
Trip Cost Calculation: Estimates trip cost based on distance and fuel efficiency.
Performance Statistics: Calculates 0-60 mph, 1/4 mile time, trap speed, and other performance metrics.
Horsepower and Torque Estimation: Estimates horsepower and torque curves and generates dyno charts.
Printable Diagnostic Reports: Creates printable reports for vehicle diagnostics.
Unit Conversion: Converts between English and metric units.

Learn more at the ProScan website…

OBD Auto Doctor

OBD Auto Doctor is a refined and feature-rich OBD2 car diagnostic tool, considered among the best OBD software for Mac OS X. It allows users to read and reset codes and communicate directly with the car’s OBD2 system.

While powerful, OBD Auto Doctor might be considered advanced for casual car owners. For a simpler yet reliable option, Movi software (reviewed below) is worth considering.

Overall, OBD Auto Doctor excels in data extraction depth, making it an excellent tool for serious car enthusiasts wanting comprehensive vehicle information.

Benefits of OBD II Auto Doctor:

DTCs, Freeze Frame, MIL: Provides comprehensive diagnostic code, freeze frame data, and MIL (Malfunction Indicator Light) information.
Fuel Emission and Consumption Data: Accesses fuel emission and fuel consumption data.
Real-time OBD2 Indicators: Displays real-time OBD2 parameter readings.
Numerical and Graphical Data Views: Offers both numerical and graphical data representations.
Data Sharing via Email: Enables data sharing via email.
VIN and ECU Calibration ID Reading: Reads Vehicle Identification Number (VIN) and ECU calibration ID.
Extensive DTC Database: Includes a built-in database of over 14,000 alarm codes.

Learn more at the OBD II Auto Doctor website…

Movi and Movi Pro

Movi/ Movi Pro is designed for simplicity and reliability on macOS. It reads information from the vehicle’s engine control module (ECM) without complex setup. For users seeking ease of use without sacrificing accurate fault code retrieval and live PID parameter reporting, Movi is an ideal OBD2 software choice. It offers a less overwhelming interface compared to OBD Auto Doctor.

The free version of Movi is suitable for basic diagnostics, but clearing DTC fault codes requires the paid Pro version.

Movi effectively extracts historical vehicle faults (DTCs) and can clear the ‘check engine light’ while providing detailed trouble code information.

Benefits of Movi and Movi Pro:

Real-time Data Viewing: Displays real-time engine data to aid in diagnosing failures.
DTC Read/Clear: Reads and clears Diagnostic Trouble Codes.
Freeze Frame Data: Views and clears freeze frame data.
Fuel Consumption and Economy Monitoring: Tracks fuel consumption and economy.
Virtual Horsepower and Torque Monitoring: Monitors virtual horsepower and torque.
Simultaneous Graphing: Graphs up to 4 engine indicators concurrently.

Learn more at the Movi website…

EOBD Facile

EOBD Facile OBD software for macOS is known for its simplicity and ease of setup with ELM327 interfaces. Available in the App Store, EOBD Facile is comparable to Movi in terms of user-friendliness. The choice between them often comes down to personal preference in user interface.

Once connected, EOBD Facile allows users to diagnose issues, view real-time results, access vehicle information, and monitor car sensor readings.

Benefits of EOBD Facile:

Check Engine Light Clearing: Clears the check engine light.
Engine Code Diagnostics: Displays engine codes and their descriptions.
Manufacturer Error Code Monitoring: Monitors manufacturer-specific error codes.
GPS Data Logging: Maintains a backlog of GPS data records.

Learn more at the EOBD Facile website…

Choosing the best car diagnostic software depends on individual needs. Some users prioritize advanced features like live data visualization, while others need only basic engine health and safety checks.

This guide provides our expert recommendations for the best OBD2 software based on years of experience with various car diagnostic tools. Consider your requirements and technical comfort level when selecting the right OBD2 scan tool software for your needs.

7 Best OBD2 Software in 2025 and Beyond: Reviewed and Tested

4.2 (83.78%) 249 votes