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OTR Diagnostics

Superior diagnostics for your trucks

For the dedicated owner-operator, the fleet manager, or the hands-on technician ensuring peak uptime - OTR Diagnostics is game-changing.

So much more than a diagnostic tool

With OTR Diagnostics, think of it as the difference between skimming the surface and diving deep into the ocean's depths.

7 Reasons Why You Should Switch to OTR Diagnostics

Unlike the OTR Reset Tool, OTR Diagnostics empowers you with comprehensive diagnostic insights.

1. Multiple Vehicle

Get full diagnostic access to an unlimited number of vehicles with a variety of makes and engines.

2. Read and Reset Fault Codes

View/reset active and inactive fault codes. Detailed descriptions provide troubleshooting, history, and possible fixes.

3. Fault Code & Command History

Know how often and when a fault code was reset or a forced DPF regen lasted.

4. Reset Emission Derates

When you’ve replaced aftertreatment parts to comply with a derate, you can reset the aftertreatment values and be on your way.

5. Start a Forced DPF Regen

Perform a forced regen when you’re unable to initiate a passive or active regen due to a high soot load or other variables.

6. Live Data

Viewing live data keeps you informed about your vehicle at any moment. Data includes: DEF Fluid Level, DPF Soot Level, EGR Value Position, Aftertreatment Exhaust Temps, (+more).

7. Updatable to the latest years

Automatically updates with current engine types for a seamless compatibility.

Do more with
OTR Diagnostics

You're not just addressing symptoms; you're delving deep into the root causes, ensuring a longer truck lifespan, minimized downtime, and significant savings on potential repair costs.

See what drivers are saying

“This product that I purchased has saved me money. The dealerships would always say we are 2 weeks before we can get you in not no more . I connect the diagnostic tool scan the codes find out what it is and go get the part and up and running with in a day . I love this product should have bought it earlier . I do recommend this product to all owner operators.”

Jesus V.


“ A must have tool for owner operators. Can give you an idea of what’s wrong and if in derate it will take it out and let you get to a shop instead of being towed”

Dale P.


“It proved to be amazing OTR performance. It’s so easy to use and very self explanatory. I would recommend it as a handy tool for every trucker. 5 stars ⭐️..”

Deepak R.


Why OTR Diagnostics is better

OTR Diagnostics OTR Reset Tool

Years Covered

2008 - 2024+
2004 - 2023


OBD, 9-pin
OBD, 9-pin


Reset Fault Codes

Reset Aftertreatment

Reset Soot Level

Reset Ash Accumulator

Reset SCR Accumulator

Forced DPF Regen

Reset EGR Derate

Reset 5mph DEF Derate

Install a cleaned / new DPF

 See Full List Here

Reset Fault Codes

Reset Aftertreatment

Forced DPF Regen

Command Functions

iOS or Android App
Time based

Command Prompts


View Fault Codes

Live Data

Ongoing Updates



Vin Decoding

Fault Code Details

Display (mobile device)

USA Support

Technical Support


*Commands differ based on engine and make

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 tool doesn’t fit your needs for any reason, just let us know within 60 days of receiving your order, 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. No bouncing. Real help from real people, when you need us! Contact us via phone, chat, or email anytime.

Limited Lifetime Warranty

Our OTR Diagnostics hardware is backed by a Limited Lifetime Warranty, which is a testament to our commitment to your satisfaction. We understand that your investment in our product is significant, and we want you to be confident that it will perform as designed.