OTR Diagnostics redesigned layout helps you run advanced diagnostic functions, including a forced DPF regen from your mobile device easier than ever before.

Chassis Coverage
- Volvo Trucks — All Models
- Mack Trucks — All Models
- Peterbilt Trucks — All Models
- Kenworth Trucks — All Models
- Freightliner Trucks — All Models
- Western Star Trucks — All Models
- International Trucks — All Models
- Other Heavy Duty Models that use Cummins and Paccar PX engines.
- NOTE: Does not work on Light-Duty Dodge trucks.
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

Cummins Commands
9 Pin Plug
- EPA07 (2007-2010)
- Reset Cummins Fault Codes
- Reset Generic Fault Codes
- Reset Aftertreatment
- Start Forced DPF Regen
- EPA10 (2011-2013)
- Reset Cummins Fault Codes
- Reset Generic Fault Codes
- Reset Aftertreatment
- Start Forced DPF Regen
- EPA13 (2014-2016)
- Reset Cummins Fault Codes
- Reset Generic Fault Codes
- Reset Aftertreatment
- Start Forced DPF Regen
- EPA17 (2017-2021)
- Reset Cummins Fault Codes
- Reset Generic Fault Codes
- Reset Aftertreatment
- Start Forced DPF Regen
Paccar PX Commands
9 Pin Plug
- EPA07 (2007-2010)
- Reset Paccar PX Fault Codes
- Reset Generic Fault Codes
- Reset Aftertreatment
- Start Forced DPF Regen
- EPA10 (2011-2013)
- Reset Paccar PX Fault Codes
- Reset Generic Fault Codes
- Reset Aftertreatment
- Start Forced DPF Regen
- EPA13 (2014-2016)
- Reset Paccar PX Fault Codes
- Reset Generic Fault Codes
- Reset Aftertreatment
- Start Forced DPF Regen
- EPA17 (2017-2021)
- Reset Paccar PX Fault Codes
- Reset Generic Fault Codes
- Reset Aftertreatment
- Start Forced DPF Regen
NOTE: OTR Diagnostics is not compatible with the OTR Reset Tool.
Cummins Engines Covered
Engine | Model | Year(s) |
Cummins X15 | CM2450 | 2020-2021 |
Cummins X15 | CM2350 | 2013-2019 |
Cummins ISX15 | CM2350 | 2013-2019 |
Cummins ISX15 | CM2250 | 2011-2012 |
Cummins ISX15 | CM871 | 2008-2010 |
Cummins ISB6.7 | CM2350 | 2014-2021 |
Cummins ISC8.3 | CM2350 | 2014-2021 |
Cummins ISL9 | CM2350 | 2013-2021 |
Cummins X12 | CM2350A | 2013-2021 |
Cummins ISB6.7 | CM2250 | 2011-2013 |
Cummins ISC8.3 | CM2250 | 2011-2013 |
Cummins ISL9 | CM2250 | 2011-2013 |
Cummins ISB 6.7 | CM2150 | 2008-2010 |
Cummins ISC8.3 | CM2150 | 2008-2010 |
Cummins ISL9 | CM2150 | 2008-2010 |
Paccar PX Engines Covered (9pin)
Engine | Emission |
Paccar PX-6 | EPA07, EPA10, EPA13, EPA17 |
Paccar PX-7 | EPA07, EPA10, EPA13, EPA17 |
Paccar PX-8 | EPA07, EPA10, EPA13, EPA17 |
Paccar PX-9 | EPA07, EPA10, EPA13, EPA17 |
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
Meet Jack Mancini
Customer Review
Voice of our customers
APP FEATURES

Enhanced Fault Code Descriptions
Read Fault Codes. You’ll be provided with enhanced detailed 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 occurred and date stamp when they first occurred.
View commands with status history for how long forced DPF regen lasted, clearing fault codes and reset aftertreatment status.

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?
Does this App need to be online to be used?
I currently have a compatible Bluetooth Adapter. How can I purchase only a subscription?
If I have an existing OTR Performance account, how do I link my OTR Diagnostics subscription to the account?
Which platforms Is OTR Diagnostics available for?
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 otrperformance.com
- 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.
OR
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

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.
- 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.
- Phone and/or tablet not included.
- Reviews
- Questions
AAA+++++++
Exactly what a expected!!..

Otr diagnostic
Great product..Has kept me from getting towed several times

Vacation Saved
This system saved my vacation. I was in the Outter Banks of North Carolina and needed a forced regen. I had a bad outlet nox sensors that I replaced. The only way to see if I solved the problem and clear the check engine light was a regen. I could not get anyone to come to my location for service. This saved my vacation and gave me peice of mind.

So far so good
Just got it.. seems great so far..

Good tool for owner operators
This tool is a must these days with these electronic engines. Reads codes, clears codes, perform forced regens, monitor different areas of the after treatment systems and more. Highly recommend.

Great tool
Let’s me see what’s going on with my engine.

Great and useful product.

Don't be a fool - this product pays for itself!
Great product that pays for itself

Mixed feeling. It was a little frustrating setting up and connecting to the wireless module. But I was able to read and reset codes and force regen my truck, which was the main reason why I purchased the system.

Performance of OTR scan tool
I have needed it only twice but I got what I needed and was able to get it up and running.

Cummins X15
This code reader was a life saver. I had a sensor start to go out and got the 3 hour derate message. Pulled over and was able to clear the code along with the derate. It gave me time to get to a dealership so I could buy the new sensor and get the truck fixed. I was able to finish my delivery and pickup without calling for a mobile mechanic or tow truck. The code reader paid for itself the first time I had to use it!

Owner
Perfect for work


owner
good and quick service

Great so far
We are definitely using it it’s been test so far