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Documentation
Elm327 Guide



ELM327 OBD-II Software Guide

Attention: If after reading through this guide you still need support, please feel free to email us. If your scanner has faults and you did not purchase it directly from us, we suggest to return the item and buy an Interfuse ELM327 diagnostic scanner from of our store. These scanners are free from faults.


Getting Started

There are many different software packages you can use to scan your vehicle for realtime information and error codes. Here we are collecting information and offering links to download these packages. Over time, this guide is likely to be updated and changed to become more comprehensive with full reviews and screenshots. Check back from time to time for the latest updates.

If we were to recommend a software package to get you started we suggest Torque for Android mobile phones and EasyOBD-II for Windows laptops. All of the applications are relitively light weight, meaning, they will not be heavy on system resources. When installing onto windows, take care not to over-write newer system files with older system files.

Setup Instructions


ELM327 Drivers

Windows ELM327 Drivers

If you are connected to the internet, Windows Update should install the drivers for you. If they do not install automatically first we suggest to check in the Windows Device Manager and attempt to have Windows troubleshoot the problem by right clicking on the hardwre and clicking the troublshoot setting. If this does not produce results there are two sets of drivers that may be installed depending who manufactured your equipment. The first (older set of drivers) may be downloaded here, otherwise we suggest you start with the latest CP210x VCP driver, here.

Mac OSX ELM327 Drivers

For OSX the FTDI VCP Drivers should do the trick for you, remember to restart your computer after the drivers are installed. If that driver doesn’t seem to have any effect, install the CP210x USB to UART Bridge VCP Driver.


ELM327 Software

Download the complete Elm327 Software Archive.

Freeware ELM327 Software

Demo & License Based ELM327 Software Packages

For Android (Bluetooth ELM327 users), check the Play Store for OBD-II compatible applications, we recommend Torque Free and Torque Pro.

For iPhone, iPad and iPod Touch (WiFi ELM327 users) you can run a search for OBD-II applications in the app store. Many applications are not compatible but we have tested and connected to ELM327 scanners with FuzzyCar, Rev and DashCommand. Our only recommendation here is to use DashCommand as FuzzyCar has since been de-activated and the Rev application seems very limited in comparison.


ELM327 FAQ’s

What is the Bluetooth Pairing Code?

Most adapters use ’0000′, ’1234′ or ’6789′.

What vehicles are your OBD-II adapters compatible with?

The interfaces work with OBD-II Compliant vehicles. There are two things to check for to see if your vehicle is OBD-II Compliant: 1) Look for a sticker under the hood, on the sticker it should say “OBD-II Compliant” or 2) Look under the steering column or the dash for an OBD-II Adapter. Find either of those and the interface will work.
I am not sure which COM-Port to select, how do I know which port my USB OBD-II adapter is assigned to?

You can find the COM number in the Device Manager control panel. The hardware can be found under the ‘Ports (COM & LPT)’ sub-menu. If you can’t find it, unplug the device and plug it back in. You can watch for the hardware to show up in real-time.

How do I change the COM-Port number assigned to the device?

Go to the Device Manager control panel and locate the OBD-II Adapter under the ‘Ports (COM & LPT)’ sub menu. It may be titled ‘USB Serial Port’, if you can’t locate it, unplug the adapter and plug it back in, you can watch it show up in real-time. Right click on the device and click ‘Properties’, click the ‘Port Settings’ tab and finally the click ‘Advanced’ button. Here you can change the COM-Port number, we suggest any COM Port between 2 and 5. Click ‘Ok’ to save your settings.

I have paired a Bluetooth OBD-II Adapter to my computer but when I attempt to connect to the assigned COM-Port it will not connect to the interface. What do I do?

We suggest reinstalling the device drivers. Here is a step by step:
These instructions are written specifically from Windows 7, if you are using a different Windows Operating System, the steps you need to take should be similar.

  1. Open the Device Manager control panel
  2. Find the COM & LPT menu and right click on the item titled ‘Standard Serial over Bluetooth link’ and select Uninstall. If there are two items, uninstall each of them.
  3. From the Bluetooth control panel, also remove the OBD-II adapter from there, right-click and remove the device.
  4. Start your vehicle, plug in the adapter and click to ‘Add a Device’ in the Bluetooth menu. It will come up and you can enter the pairing code.
  5. Let everything re-install from scratch, it might take a minute or two for the adapter to finally show up in the device manager under the COM & LPT menu. You can have that open during the entire installation to watch its progress.
  6. If the COM-Port was set 4 or similar before, it should install to the same COM-Port. We suggest using any COM 2-5. This can be changed from the properties menu.
  7. Open easy EasyOBD-II (this can bedownloaded from our website) and connect to the COM-Port. The device at this point will begin to identify your scanner hardware and you are ready to ‘Go Online’ with your vehicle.If you changed the COM-Port during this process and EasyOBD-II is unable to connect to your diagnostic scanner, we suggest to conduct the reinstallation a second time starting from step one.

Any other questions? Feel free to email us.


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