OBD graph for Windows and Linux

The release date of the next version of OBD Auto Doctor for Windows and Linux is coming closer. We would like to give you a short preview of the most important feature addition made to the software: OBD data graph aka oscilloscope.

With the OBD oscilloscope, you can visualize sensor value changes easily. Graphs are great tools because they communicate information visually. Even large amount of data, or fast changing data can be interpreted much better when expressed as a graph. Graphs help you to identify sudden spikes and trends in the data.


Air Flow Rate from Mass Flow Sensor Graph
Air Flow Rate from Mass Flow Sensor


In addition to visualizing the numeric OBD data, our software enables you to save the graphs to your computer as image files. You can share the images with your mechanics or friends, or you can post them to automotive forums when asking repair advice from fellow DIYers. The screenshots in this post are saved by OBD Auto Doctor.


Fuel Rail Pressure Graph
Fuel Rail Pressure


Follow us on Facebook or Google Plus and get notified when the new software version with the graphs is available for download!





Offline Trouble Code Database for Windows Phone

Detailed DTC Search screenshot

We are proud to present you OBD Trouble Codes app – Offline DTC Database in Your Pocket for Windows Phone 8 devices! The app contains over 14,000 OBD-II Diagnostic Trouble Codes including generic body, chassis, powertrain and network trouble codes. In addition manufacturer specific trouble codes are included too although those are available after in-app upgrade.

In the process of learning the new Windows Phone 8 platform, we decided to get familiar with the ecosystem using new approach. We decided to experiment a little with the platform first. This experiment turned out to be this small yet powerful trouble code search app. As you may have figured out, yes, we are planning to introduce OBD Auto Doctor for Windows Phone 8 in the near future.

If you have Windows Phone 8, please download the app and give us feedback. Based on the feedback and download volumes, we will prioritize the work on our complete diagnostic software OBD Auto Doctor for the platform.

The app can be found from https://www.obdtroublecodes.com. If you have a Windows Phone 8 device, you can download it straight to your phone from


Download OBD Trouble Codes App from Windows Phone Store!

Happy Easter time for all of you.





OBD2 software for Symbian, MeeGo gets fuel economy

Fuel economy sensor in action

It’s been a while since the last update of our Symbian and MeeGo OBD-II software versions. Yet we haven’t forgotten you. Quite the opposite, last week we rolled out a new version for these platforms including fuel economy sensor. The version for Nokia N9 was approved last week already. Today we got informed by Nokia that the Symbian update was approved and is ready for download from the Nokia Store. Some of you may have tried the new versions already. We have got some feedback and thanks for keeping it in par with the Android version.

What’s new in 1.6?

The most interesting feature here is the fuel economy. Fuel economy is not reported by majority of cars. Instead, it has to be calculated using other sensor values. For cars using gasoline, we use air flow rate from mass air flow sensor or intake manifold absolute pressure and intake air temperature plus other needed sensor values. For diesel engines, the fuel economy calculation is based on calculated engine load and air flow rate from mass flow sensor.

There are few new settings related to the fuel consumption calculation that you might want to check:

  • Fuel correction factor: general factor that is used to multiply the calculated economy. Change this only if you think the calculated economy should be fine tuned.
  • Volumetric efficiency: For modern cars the VE is about 85%, for older cars it might be little lower such as 75% or 80%. Change this only if you know what you are doing.
  • Engine displacement: This is the volume of the engine in liters. Change this to reflect your car!

If you have any questions or something to say, please leave a comment or contact us using email.





OBD2 data presented visually as a graph

The Android version of our popular OBD2 software got a new version released few days ago. In this blog post I want to demonstrate one of the most important new feature of the released 1.1 version: Sensor Graph.

With the Sensor Graph you can see the OBD2 sensor values presented visually as a graph. The benefit of a graph is that it helps you to see trends in sensor value changes. It is also easier (for the co-driver) to monitor the values while driving. Moreover, the fullscreen sensor view uses black background color to save the battery life as much as possible. It’s good to use it if you wan’t to monitor some gauge for a long period of time.

The screenshots below illustrate the graphs. They demonstrate the different views in OBD Auto Doctor that let you monitor OBD2 sensor values. The screenshots are taken with the Nexus 7 tablet. The graphs really look good on large screen but they are usable smaller screens too.

If you haven’t tried the app yet, please do yourself a favor and try it now!


OBD2 Sensor Data Graph


The red circles in the images demonstrate the places to be touched. Touching the Fuel consumption item in the list view opens up the Sensor Graph view. The Fullscreen Sensor Graph view is opened by touching anywhere in the graph within the Sensor Graph view.





How to upgrade to the Pro version of OBD Auto Doctor for Android?

Well, that’s a question we hear once in a while. As you may have noticed, there is no separate Pro version of the app in Google Play. Your observation is correct. The reason for that is because the upgrade is done using Google Play In-App Billing mechanism.

Okey, so how does the process go in practice? Let me show you how to upgrade the app with some illustration. You can click the images to view them larger.


Upgrade step 1 to Pro
Step 1
Upgrade step 2 to Pro
Step 2
Upgrade step 3 to Pro
Step 3


The steps are very easy. Let’s go thru them:

  1. Launch the app. Once started, tap Extras from the bottom menu. Then scroll down and select Upgrade.
  2. Tap the ‘Upgrade now‘ button.
  3. Check all the details and then tap ‘BUY‘ to make the purchase.

As with all Google Play purchases, this purchase is also bind to your Google Account. You can install the app to all your Android devices with a single purchase. Just download the free app from Google Play, launch it and the app should automatically upgrade to the Pro version. It is that simple.