OBD Fusion (Car Diagnostics)

In-app purchases
3.5
2.68K reviews
50K+
Downloads
Content rating
PEGI 3
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About this app

OBD Fusion is an app that allows you to read OBD2 vehicle data directly from your Android phone or tablet. You can clear your check engine light, read diagnostic trouble codes, estimate fuel economy and much more! OBD Fusion has a ton of features that are used by professional car mechanics, do-it-yourselfers, and users who want to monitor car data during day to day driving. Some of the features include customizable dashboards, real-time graphing of vehicle sensors, emission readiness status, data logging and exporting, oxygen sensor tests, Boost readout, and a full diagnostic report.

Is your check engine light on? Do you want to monitor fuel economy and usage in your vehicle? Do you want cool looking gauges on your Android phone or tablet? If so, then OBD Fusion is the app for you!

OBD Fusion is a vehicle diagnostics tool that connects to OBD-II and EOBD vehicles. Not sure if your vehicle is OBD-2, EOBD or JOBD compliant? See this page for more information: https://www.obdsoftware.net/support/knowledge-base/how-do-i-know-whether-my-vehicle-is-obd-ii-compliant/. OBD Fusion works with some JOBD compliant vehicles and in some cases requires modifications to the connection settings in the app. Please contact us for more information.

You must have a compatible scan tool to use this software. For recommended scan tools, see our website https://www.obdsoftware.net/software/obdfusion. Please note that cheap ELM clone adapters can be unreliable. OBD Fusion can connect to any ELM 327 compatible adapter, but the cheap clone adapters tend to have slow refresh rates and might disconnect randomly.

OBD Fusion for Android is brought to you by OCTech, LLC, the developers of TouchScan and OBDwiz for Windows and OBDLink for Android. Now you can get the same great features for your phone or tablet.

OBD Fusion has the following features:

• Android Auto support. Note that Android Auto does not support dashboard gauges.
• Read and clear diagnostic trouble codes and your Check Engine Light (MIL/CEL)
• Real-time dashboard display
• Real-time graphing
• Fuel economy MPG, MPG (UK), l/100km or km/l calculation
• Create custom enhanced PIDs
• Includes some built-in enhanced PIDs for Ford and GM vehicles including engine misfires, transmission temp, and oil temp.
• Multiple trip meters for tracking fuel economy, fuel usage, EV energy economy, and distance
• Customizable dashboards with fast dashboard switching
• Log data to CSV format and export for viewing in any spreadsheet application
• Display battery voltage
• Display Engine Torque, Engine Power, Turbo Boost pressure, and air-to-fuel (A/F) ratio (vehicle must support the required PIDs)
• Read freeze frame data
• English, Imperial, and Metric units that are fully customizable
• Over 150 supported PIDs
• Displays vehicle information including VIN number and calibration ID
• Emissions readiness for each US state
• Oxygen Sensor Results (Mode $05)
• On-board Monitoring Tests (Mode $06)
• In-performance Tracking Counters (Mode $09)
• Full diagnostic report that can be stored and emailed
• Option to select the connected ECU
• Built-in database of fault code definitions
• Bluetooth, Bluetooth LE*, USB**, and Wi-Fi*** scan tool support
• Available in English, Spanish, French, Italian, German, Czech, Greek, Chinese, and Portuguese

* Your Android device must have Bluetooth LE support and be running Android 4.3 or newer.
** You must have a tablet with USB host support to connect using a USB device. Only FTDI USB devices are supported.
*** Your Android device must support ad-hoc Wi-Fi connections to use a Wi-Fi adapter.

OBD Fusion is a trademark of OCTech, LLC registered in the U.S.
Updated on
12 Sept 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Location, App activity and 2 others
This app may collect these data types
Location, App activity and 2 others
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

3.6
2.47K reviews
Jamo
10 July 2025
Overall, very much worth the $!! I paid for this app, plus the enhanced diagnostic capabilities for my '21Mazda CX30. Ive tried many other OBD2 apps, even paid for the pro version of a few others, but in comparison to OBD Fusion, none have come close to providing the level of diagnostic capabilities as FUSION. This app has given me insight to inner workings of my vehicle that I didnt think was possible. Has already paid for itself 10 fold in the 2 months ive used it! Highly recommend!
24 people found this review helpful
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private private
1 August 2025
2024 Update: Please add phone current battery, date, time as a DISPLAY. I love using this app. However I was in the middle of nowhere, app refused to connect to my OBD without validating the app. I had no internet access. This needs to be fixed asap. If there is no internet, at least allow the app to run in normal mode.(temporarily disable the enhanced diagnostics). Also my OBD adapter is WiFi, so the enhanced diagnostics randomly get enabled please fix it.
51 people found this review helpful
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Roby
7 August 2025
The BEST OBD app so far,the more complex and professional one.Torque pro is just a toy ,i'm coming from Car Scanner paid who can't connect to enhanced diag,and also tested the Motordata obd just to discover that OBD Fusion found 3 times more enhanced pids for my car...i'm still in shock.Fast connection with a simple Elm327...Can even measure m/s2 acceleration in real time just as Perfexpert dyno.I don't get so many bad reviews...App + enhanced diag for my Ford Focus, 24 euro.Highly recommended!!
22 people found this review helpful
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What's new

- Added FCA 2026 enhanced diagnostics and enhanced support for a few additional 2024/2025 vehicles.
- Added support for Alerts, which can be configured on the Settings > Preferences > Alerts page.
- Added support for vehicle-specific Android Auto configurations.
- Added a trip PID for average speed.
- Added support for specifying start/stop commands for user-defined PIDs.
- Improved the settings import/export.
- The trip map can now be expanded to full-screen.
- Bug fixes and improvements.