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OTR Diagnostics | Volvo & Mack
OTR Diagnostics | Volvo & Mack
OTR Diagnostics | Volvo & Mack
OTR Diagnostics | Volvo & Mack
OTR Diagnostics | Volvo & Mack
OTR Diagnostics | Volvo & Mack
OTR Diagnostics | Volvo & Mack
OTR Diagnostics | Volvo & Mack
OTR Diagnostics | Volvo & Mack
9 reviews

OTR Diagnostics | Volvo & Mack

Regular price $800 USD $600 USD
Unit price  per 

Price includes:

one time purchase hardware

12-month auto renew subscription

Packages include all needed hardware and first year subscription.

Subscription automatically renews after one year unless canceled (cancel at any time).

Works on iOS and Android.

Comes with a 60-day money-back guarantee.

Coverage App Features
OTR Diagnostics redesigned layout helps you run advanced diagnostic functions, including a forced DPF regen from your mobile device easier than ever before.
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Chassis Coverage
  • Volvo Trucks — All Models
  • Mack Trucks — All Models
What comes with the package?
  • OTR Diagnostics App Download
  • OTR Diagnostics 12 Month Subscription
  • OTR Link - Mini Adapter
  • OTR Crossover Adapter
  • OTR OBD Adapter
  • Instructions Manual
volvo mack in the box
Instructions Manual
Volvo and Mack Commands
  • OBD Plug / Harness
    • EPA14/17 (2014-2023)
      • Reset Fault Codes
      • Reset Aftertreatment
      • Start Forced DPF Regen

NOTE: OTR Diagnostics is not compatible with the OTR Reset Tool.

Engines Covered
Volvo Engine (OBD) Emission
D11 EPA13, EPA17, EPA21
D13 EPA13, EPA17, EPA21
D16 EPA13
Mack Engine (OBD) Emission
MP7 EPA13, EPA17, EPA 21 *MRU/LEU Supported
MP8 EPA13, EPA17, EPA21
MP10 EPA13

How OTR Diagnostics Works

Set up in a few simple steps.


Step 1

Select diagnostics package for your engine


Step 2

Connect adapter to vehicle diagnostic port


Step 3

Download OTR Diagnostics app for your mobile device


Step 4

Begin using OTR Diagnostics app

Owner Operator

Customer Review

Voice of our customers



Enhanced Fault Code Descriptions

Read Fault Codes. You’ll be provided with enhanced detail fault code information.

For instance, you’ll see the following displayed:

SPN 5394 | FMI 3

  • Aftertreatment diesel exhaust fluid (DEF) dosing valve
  • Engine Controller

Detailed fault code information, will be provided such as description, troubleshooting, symptoms and possible fixes.


Fault Code Commands

Reset Active Fault Codes. Fault codes that determine that there is an existing issue. Certain active fault codes can be cleared, however, if the problem has not been fixed the fault code will reappear prompting you to seek service.

Reset Inactive Fault Codes. Fault codes that indicate that there was a previous issue.

Clear first-time ‘Ghost’ Codes. To get rid of ghost codes, all you have to do is reset the fault codes with OTR Diagnostics.

What’s a ghost code? Specific trucks will display fault codes on the dashboard, and most of the time you’ll have a check engine light or a check module message. After this, a screen will appear stating that the error has occurred. Many of the codes that appear on your dashboard fall into the category of “ghost” codes, meaning that the fault code was triggered by certain conditions that are nearly impossible to recreate. To get rid of ghost codes, all you have to do is clear fault codes with the OTR Diagnostics and clears the DTCs once. Note that if the fault code comes back a second time, you do need to take the matter seriously.


Aftertreatment Commands

Forced DPF regen. A forced DPF regen is performed when a diagnostic scan tool, such as the OTR Diagnostics, starts the regen process. The DPF soot load could be too high for a passive or active regen to occur, meaning you’ll need to perform a forced DPF regen.

Reset Ash Accumulators. Ash accumulators have stored values in the engine control module (ECM). Ash level includes measurement of ash in the DPF.

Reset DPF Accumulators. DPF accumulators have stored values in the engine control module (ECM). DPF level includes measurement of soot in the DPF.

Reset Aftertreament Learned Data. Measurement of learned data based on various engine components to adjust your injection timing based on characteristics of your engine sensor values.

Reset DPF Regeneration Timers. Measurement of time since the last DPF regen occurred. The calculation is based on time, miles driven, and fuel usage.


Fault code history and command history

Quickly reference recent fault codes, how often they occured and date stamp when it first occured.

View commands with status history for how long forced DPF regen lasted, clearing fault codes and reset aftertreatment status.

live data

Display Parameters

Live data is information that gets updated in real time. This includes vital information about your engine and your aftertreatment system. The live data fields will be updated in real time through the Bluetooth connection.

Why is live data important? Live data is an important feature that can help solve an intermittent issue or it can be used to get more information from your aftertreatment system during a DPF regeneration.

Some of the parameters you can track with OTR diagnostics include

  • DEF Fluid Level
  • DPF Soot Level
  • EGR Value Position
  • Aftertreatment Exhaust Temps
  • Battery Voltage
  • Boost Pressure
  • Accelerator Pedal Position
  • Engine Fuel Delivery Pressure
  • + many more

OTR Diagnostics FAQ

How does the subscription work? 

Subscriptions are based on a 12 month basis.

Does this App need to be online to be used?

OTR Diagnostics is bluetooth based and does require you to have Wifi or cellular coverage for you to be able to use the app.

I currently have a compatible Bluetooth Adapter. How can I purchase only a subscription?

Stand-alone OTR Diagnostics subscriptions are available by contacting us - Contact us today!

If I have an existing OTR Performance account, how do I link my OTR Diagnostics subscription to the account?

When purchasing a subscription, you must use the same email on your existing account when you are on the checkout page. Then it will automatically link your subscription to your existing account. If you are having problems managing your subscriptions, click here

Which platforms Is OTR Diagnostics available for?

OTR Diagnostics works on iOS and Android mobile phones and tablets.

How do I create an account?

We have a couple of different ways to create an account. You can create an account on a web browser OR by using the mobile app. Follow the details below to get started.

Create account with

  • Create an account on a web browser at OTR Performance
  • Purchase your subscription and use your email that is attached to your OTR account.
  • Download and use credentials created to use the mobile application.

Create account on the OTR Diagnostics mobile app

  • You can register by using the app
  • Purchase your subscription and use your email that is attached to your OTR account.
  • Use credentials created to login into mobile "OTR Diagnostics" Application

Now Available!

Download Today!

60-Day Guarantee

We get it, you don’t know us very well yet. That’s why OTR Diagnostics comes with a 60-day, no-hassle, money-back guarantee. If this doesn’t fit your needs for any reason, just let us know within 60 days, and we’ll refund 100% of your purchase price. We’ve got your back.

USA Support

Located in Detroit MI, (EST). A truly committed team of trained experts that are there to assist with any customer service, technical support or general questions you may have. No bots. Real help from real people, when you need us! Contact us via phone, chat, or email anytime.

  1. This product will not bypass the operation of any emission control component. This is used solely to reset the modules after replacing aftertreatment components or initiating a forced regeneration.
  2. Phone and/or tablet not included.
Customer Reviews
4.7 Based on 9 Reviews
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Filter Reviews:
Santos R.
United States United States
I recommend this product


This tool is just what I needed, it has surpass my expectations and more, for you truckers that are beginning or have no knowledge of trucks this tool is what will help you learn about your truck!!!!

Cesar A.
United States United States
I recommend this product

So far So good

It didn't clear a code for radar misalignment so I had to go to shop for that but it did allow me to run a forced Regen which was nice.

OTR Performance® Inc. OTR Diagnostics | Volvo & Mack Review
Luis M.
United States United States
I recommend this product

Life saver

i want to say that this tool does what it said to do i bought this truck not knowing that the regen button not working, i bought this tool not knowing if is was going to work but man this tool soon i plug it and wait it to start, soon i heard the engine idle raised up i was so happy men wow i impressed this is a tool that every trucker should buy thanks OTR i will send driver to check your tools, very happy customer.....

Charles W.
United States United States
I recommend this product

Worth the purchase

Works as advertised. This is a very handy and saves time and money.

Andriy T.
United States United States
I recommend this product


Best tools for owners. Save money and time. Thank you!!!!

George N.
United States United States
I recommend this product

Very happy customer

Excellent although I need the reset tool to be able Regen I still like I can see live data and still reset codes...

Stefan P.
United States United States
I recommend this product

Nice, easy to use.

Good.and easy to use because no laptop needed.

Charles S.

Great so for,

Great so for,


Driver OTR

My experience with OTR has been well worth the cost. The forced regen save me the money I spent and it cleared my codes. Must have tool for OTRDrivers and Owner-Operator's.