OBD Fusion (Car Diagnostics)

In-app purchases
3.8
1.55K reviews
50K+
Downloads
Content rating
Everyone
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About this app

OBD Fusion (formerly TouchScan) 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:

• Read and clear diagnostic trouble codes and your Check Engine Light (MIL/CEL)
• Real-time dashboard display with heads up display (HUD) option
• 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, 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)
• GPS tracking - plot vehicle parameters on a map in real-time
• 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**, Automatic Adapter Gen 2 and Pro***, 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.
*** OBD Fusion with the Automatic adapter is currently limited to reading SAE PID data only.
**** 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
Oct 25, 2022

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
3.8
1.55K reviews
perry farmer
July 6, 2022
Works well when it connects to a paired adapter. Problem is getting it to connect. Elm 237 Not sure but may be related to having internet access. Once I drive away from the house it often works when a cell connection is made. July 6, 2022 still fails to connect most times. Used the same adapter with others and connects easily but like this interface much better, just unusable
17 people found this review helpful
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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.
50 people found this review helpful
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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?
A Google user
August 20, 2019
This is the best generic android based OBDII scanner for gathering data. I use it to correct OBDII issues on vehicles that fail their bi-annual smog inspections. Mode1 is able to display all SAE generic pids available in the PCM. When it can, Mode6 CID are translated. Mode9 shows In-use performance tracking. When Permanent Codes are displayed, it shows number of Warm up Cycles, and Miles traveled after code clear. Very useful with the current California smog inspection. If I had a wish list, it would be for better graphing of pids. I use a different application for graphing pids. All in all, this is an exceptional scanner app.
27 people found this review helpful
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What's new

Fixed a bug that prevented reading some GM user-defined PIDs and some Nissan enhanced PIDs.