OBD Fusion (Car Diagnostics)

In-app purchases
4.7
1.83K reviews
50K+
Downloads
Content rating
Everyone
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

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

* 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
May 8, 2024

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

4.7
1.67K reviews
John Howey
March 18, 2024
Why in the world....once we are familiar with an app and can read it at a glance does a developer decide to completely change the interface forcing us to relearn it. No improvement, etc. Just change for change's sake. Just ridiculous... Edit 3/17/24. The response from OBD Fusion is not accurate. One simple example: the most critical feature for us users is if there is a pending code. That used to be bright green engine icon and message "No Codes". Easy to see. Now...it's a screen full of text.
19 people found this review helpful
Did you find this helpful?
OCTech, LLC
March 17, 2024
The latest update was a large development effort that added a ton of new features and improvements to the app. However, the main layout and organization of the app has not changed, so I am a bit confused by your review. Can you please email us so we can get more information about the problems you are having?
J. Wilson
June 27, 2020
Update: I have once again found a fix. I turned off mobile data. I have it connecting 3 out of 3 times. Update: I am once again unable to connect to my wifi OBD2 device. I am still able to connect with different software (Car Scanner), so I don't think it's entirely a hardware issue. Ok, so following the instructions imbedded in a different app (OBD Mary), I found that by disabling battery optimization I could get it to work every time. You may want to include this information in your app.
93 people found this review helpful
Did you find this helpful?
OCTech, LLC
May 8, 2020
I’m sorry our previous response didn’t help address the issue. Can you please reach out to our support team so that we can get more information and help you resolve the issue?
David Erdman
February 3, 2023
App works very well, though there are a few quirks. 80% of the time connection is super quick. The other 20% I have to retry 3-8 times. I would love to see the ability to show minimum and maximum read values in addition to current value. Also the ability to have a gauge tile change color based on current value would be fantastic. Current version app, toyota module, kiwi 3 Bluetooth obd adapter
16 people found this review helpful
Did you find this helpful?

What's new

- Added a new top-level trips page.
- Moved the trip statistics and trip meter pages to the new trips page.
- Added the ability to view trouble codes in AndroidAuto.
- Added the ability to customize the order of pages on the main app screen.
- Added a new clock dashboard gauge.
- Improved fuel calculations for newer vehicles.
- Various bug fixes and improvements.