OBD Fusion

OBD Fusion

By OCTech, LLC

  • Category: Travel
  • Release Date: 2013-06-02
  • Current Version: 6.1.0
  • Adult Rating: 4+
  • File Size: 110.61 MB
  • Developer: OCTech, LLC
  • Compatibility: Requires iOS 15.0 or later.
Score: 4.72879
From 16,792 Ratings


OBD Fusion is an app for your car that allows you to read OBD2 vehicle data directly from your iPhone, iPod Touch, or iPad. You can clear your check engine light, create custom dashboards, read diagnostic trouble codes, estimate fuel economy, and much more! Is your check engine light on? Do you want to monitor fuel economy and usage in your vehicle? Do you want cool looking virtual dashboards on your iPhone or iPad? If so, then OBD Fusion is the app for you! OBD Fusion is used by professional mechanics, do-it-yourself mechanics, and vehicle owners who want to monitor their vehicle and daily driving habits. Drive smarter, improve your fuel economy, and keep your engine healthy! IMPORTANT NOTE: You must have a Wi-Fi ELM327 compatible adapter or compatible Bluetooth LE adapter such as Veepeak BLE/BLE+ 4.0 adapter, Carista BLE adapter, OBDLink MX+, OBDLink CX, Tonwon BLE adapter, LELink BLE adapter, Viecar BLE adapter, Lonauto adapter, Vgate iCar Bluetooth 4.0, BAST BLE adapter, Kiwi 3/4 to use this app. OBD Fusion is not compatible with generic ELM Bluetooth scan tools. Checkout additional adapters here: https://www.obdsoftware.net/software/obdfusion OBD Fusion supports all OBD2 and EOBD vehicles sold worldwide. If you're not sure whether your vehicle is OBD2 or EOBD 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 can also connect to some JOBD vehicles that don’t support standard OBD2 protocols. Electric vehicles (EVs) are not required to have OBD2 diagnostics since they are emissions exempt. If you are interested in using OBD Fusion on an EV, contact us first to inquire about support. OBD Fusion has a ton of features including: - Read and clear emissions-related trouble codes (fault codes) and your Check Engine Light (MIL)
 - View vital driving information on your CarPlay screen. Note that real-time gauges are not supported by CarPlay, so you can't view your OBD Fusion pages such as dashboards on CarPlay. - With optional enhanced diagnostic add-ons, you can read and clear enhanced trouble codes on other modules such as ABS, SRS, etc. and read transmission temperature. An enhanced diagnostic add-on is required for this functionality. - Real-time dashboard display with fully customizable gauges. Create your own dashboards with the gauges that you want to see. - Performance calculations for 1/4 mile and 0-60 mph track times - Fuel economy MPG (US and UK), l/100km or km/l calculation - Full diagnostic report that can be stored and shared - Real-time graphing of multiple signals - Multiple trip meters
 - Log data to CSV file - Create custom enhanced PIDs - Includes some built-in enhanced PIDs for Ford and GM vehicles - Display Boost pressure in real-time - Display Engine Power and Torque - Display calculated Air-to-fuel ratio - Display battery voltage
 - Read freeze frame data
 - Fully customizable units including English, Imperial, and Metric units
 - Over 150 supported PIDs
 - Display vehicle information including VIN and calibration ID
 - Emissions readiness for each US state. Find out if your car will pass emissions inspection. - 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 - Integrated iCloud and Dropbox functionality - Available in English, Czech, French, Italian, Spanish and Greek - Manufacturer specific Enhanced Diagnostics are available for certain vehicles through In-App purchases. ** Continued use of GPS running in the background can dramatically decrease battery life. OBD Fusion is brought to you by OCTech, LLC, the makers of TouchScan and OBDwiz. OBD Fusion is a trademark of OCTech, LLC registered in the U.S.



  • Can’t read Mach-E data

    By reddit justlikeapenguin
    Please allow it to read Mach-E battery data. They show blank
  • Disappointed in CarPlay support

    By Savvy Engineer
    This review applies only to the CarPlay support in the App. While I was pleased to find the integration, I am disappointed in what can be displayed. I was hoping to see a dashboard presentation, like in the App, on CarPlay. At time of writing (28 Mar 2024) I can only see a few PIDs and cannot seem to add or change anything other than the basics of economy, engine temperature, RPM, and speed — all of which I get from the dash display of the cars I presently driver. If other PIDs can be added - such as fuel trim, manifold pressure, or ignition timing, the method to do so is not known to me. Regarding the general functionality - 5 stars. I purchased the add-in for Toyota. It provides me capability to read all the computer codes and monitor live data. Been using it for years. On one of my cars, which has an aftermarket supercharger, it is the only instrument that allows me to see the boost level (as the SC kit did not include any installable boost gauges).
  • In depth features

    By Benj N
    Thoroughly impressed with what this can do, I purchased the Enhanced Diagnostics for my specific vehicle and it covers everything I needed to monitor. Really impressed with this app!
  • my favorite part

    By jose shop
    the report of my vehicle
  • I can’t believe how much these people update this app. The update master.

    By insainlewey
    I’ve had regrets in purchasing apps in the past due to lazy developers not updating their software. That is not the case with these guys. Thanks for your outrageously long support. 🙂 And again and again. Best. Purchase. Ever.
  • Carplay for Toyota has bugs

    By 4sUserReview
    Thanks for the Carplay support, this is a gamechanger for usage. 4 stars even though Carplay needs some fixes The initial Carplay release still has some major bugs- the PIDs for Toyota (Tacoma) display on the screen initially but stop updating and the data field is displayed as a dash character. Stock PIDs keep updating on Carplay but the Toyota-specific ones don't. Thanks again for the Carplay addition.
  • Landscape Mode

    By JessHiney
    Love the app, I’ve had for a couple years now. However, is there anyway to include current Time and/or cellular service while in Landscape mode? If not, no worries. I just drive with my phone in landscape mode all the time and it feels easier to have the “Time” there. Thanks in advance!
  • CarPlay Is great

    By Andrew)685
    I’ve used this app for Multiple years with multiple vehicles. I’ve been hoping for the CarPlay for as long as I’ve had the app. It works really well and love that’s it’s finally available. Request: can the app via CarPlay auto connect to the dongle. If I open the app on the phone direct I have it set to auto connect. But would like to not touch the phone when I get in my truck.
  • Solid, and what apps actually improve over time? Suddenly CarPlay addition

    By Toto from the Chi
    After toying with every and all iOS OBD display apps available, every time I eventually went back to this workhorse. It might lack some of the shiny offerings other apps do, but by far this has been the easiest to connect, make significant edits/customizations to PIDs and troubleshoot or log issues. My last car started to be a PITA 2 years ago and this app was a godsend both in immediate warnings and long term tuning/improvements to gas efficiency. And this is all free. Now there’s a CarPlay screen. Would be nice if it wasn’t just a text list display and instead a mirror of your app dashboard, but it’s an appreciated addition. Love love love this app!
  • Outstanding

    By Darkomotorsports
    Friends of mine have used competitors apps.... some of them are hard to use ...and this one is flawless. Has saved me a ton of money. Well worth what I paid.