


One step ahead with OTR Diagnostics
Be better prepared for your haul with OTR Diagnostics v2, making heavy-duty diagnostics clear and easy to understand.

OTR Diagnostics v2 is currently available for iOS only, Android is currently running v1. Android v2 coming soon.
Read/Clear Fault Codes
Fault code knowledge and enhanced fault code details allows for faster, more accurate repairs.
View Live Data
View boost pressure, DPF soot level, aftertreatment exhaust temperature and more in real time.
Dealer-Level Commands
Clear fault codes, reset aftertreatment system and perform a forced DPF regen anytime.

Pro Plan - Built for owner-operators, small-fleets, technicians, pre-owned dealers, and beyond.
An advanced diagnostic application that performs vehicle commands over-the-road anywhere, anytime.

Vehicle Fault Codes
OTR Diagnostics allows you to view fault codes directly from your mobile device. Make decisions that keeps your operation running smoothly in real time.
- Enhanced Fault Code Details
- Troubleshooting
- Description
- Fault Symptoms
- Repair procedures
- # of Times Occurred
- Additional Information

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

Send Commands
Clear fault codes simply select the reset fault codes function.
Reset engine learned data tap the Reset Aftertreatment command and three minutes later, done.
Forced DPF Regen, is now a tap away.
- Reset Soot Levels
- Reset 5mph Derates
- Reset Ash Accumulators
- Reset DPF Accumulators
- Reset DPF Timers
- Reset Engine Learned Data
- Force DPF Regen
HOW DIAGNOSTICS WORKS
Set up in a few simple steps.

Step 1
Select Subscription Plan and Diagnostic Adapter For Your Engine

Step 2
Connect Adapter To Vehicle Diagnostic Plug

Step 3
Download OTR Diagnostics App For Your Mobile Device

Step 4
Begin Using OTR Diagnostics App
Multiple Makes / Engines
Includes subscription and adapters.
OTR Diagnostics
Owner Op Review
OTR Diagnostics
2016 Peterbilt 579
OTR Diagnostics
Owner Op - Gary
OTR Diagnostics
Owner Op - Jack
What are current users saying about OTR Diagnostics App
5-Star App Reviews
Owner-operator
ex mechanic
Wow worked in the auto industry for 12 years, and this tool does what it says. Easy to use and works. Paid for itself in a month!! Cleared ghost codes. Also saved in repairs I did myself. Thank you OTR keep bringing out new and more features on this app!! Right to repair!!
5/5Awesome Tool
Trucking Inside
I have used this tool to fix all my problems on my truck. Bought it. Soon as I got it hooked it up to my Volvo and Cummins Motor. The code were easy to read and understand. Replaced parts and no more codes.
5/5OTR Does it again!
Lilbootyc
The layout of this app is easy to use and understand. I am very impressed by the functionality of this app.
5/5Download the Instructions Manual
Download ManualOTR 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