The successor of the OTR Performance famous OTR Reset Tool, OTR Diagnostics, has been improved to include many features and improvements such as viewing fault codes, taking full advantage of the latest live data technologies, and dealer level commands.

OTR Diagnostics is developed by technicians and used by shop managers, fleet managers, technicians, owner-operators, fleet owners, drivers, and others in the industry.

The OTR Diagnostics combines years of engineering into one universal application. Equipped with the OTR Performance patent-pending algorithm, it will perform the advanced diagnostic functions at a dealer level.

View fault code numbers and names
Fault Symptoms
Repair procedures
Additional Information

Reset Soot
Reset 5mph Derates
Reset Ash Accumulators
Reset DPF Accumulators
Reset DPF Timers
Reset Learned Data
Force DPF Regen

Engine temperatures
Battery Voltage
Boost Pressure
Accelerator Pedal Position
Engine Fuel Delivery Pressure
+ many more

1999 - 2020 Volvo | D12, D11, D13, D16
1999 - 2020 Mack | Aset AC, MP7, MP8, MP10
2007-2020 Cummins | CM870, CM871, CM2150, CM2250, CM2350
2007-2020 Detroit Diesel | DD60, MBE, DD13, DD15, DD16
2011-2020 Paccar MX | MX11, MX13
2007-2020 Paccar PX | PX7, PX9
+ more coverage. 

View the website for a complete list of availability.

We are continually updating the app so you can have the best experience. Please email us at for any questions.

What’s New

Version 1.3.1

Fixed Issue with Cummins Fault Codes
Fixed sizing issue with iPad
Fixed issue with Crankcase Pressure not displaying proper value

Ratings and Reviews

4.2 out of 5
24 Ratings

24 Ratings

LFT86027 ,

Great tool!!

Is perfect! It is very detailed about what’s going on with my truck. Live data, the ability to force regen and clear fault codes!! I’d give it 5 if the basic subscription could work on 2-3 vins instead of just one.

757_ Va ,

$600 just to Sub

I was disappointed when I add the app to my phone, I will explain. So when someone spend $887 for something like this they should at least give u a free 7days trail but they wanna you to spend more money $600 or $1600…Yea its a option but if u cant really see whats up with your truck then its pointless smfh….They should have gave driver a chance to see if they wanna to subscribe or not!!!! I understand its Business but what happen to Make American Great Again smfh.

Developer Response ,

We are sorry to hear you are having trouble with the app. The first-year subscription is included in the $887. It could be that you may have an activated your account, or you are using a different email than the one you used to place your order.

If you would like to give our team a call at 586-799-4375, they can make sure your account is fully set up and that you have full access to the app and tool.

ex mechanic ,

Loren weaver o/o

Wow worked in auto industry for 12 years, and this tool does what it says. Easy to use and works. Paid for it self in a month!! Cleared ghost codes. Also saved in repairs I did my self. Thank you OTR keep bringing out new and more features on this app!! Right to repair.!!

App Privacy

The developer, OTR Performance, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Contact Info
  • Search History
  • Identifiers
  • Usage Data
  • Diagnostics

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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