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Updated 2024 Coverage!

Rest assured, OTR Diagnostics now covers ALL engine models up to 2024 including Cummins, Detroit Diesel, Paccar MX, Volvo and Mack Engines!

To ring in the new year, get ZERO cost hardware with your OTR Diagnostics subscription!

60-Day | Money-Back Guarantee

Limited Lifetime Warranty

US Based Support

300+ Reviews

OTR Diagnostics | Professional

$800 $600

$200 FREE one-time purchase hardware

$600 - 12 month PRO subscription

OTR Diagnostics - the modern scan tool & more

OTR Diagnostics gives you access to detailed fault code information, monitor real-time live data, perform commands like initiating forced DPF regeneration and track command and fault code history, all from your mobile device.

Save time and money by getting ahead of potential issues.

“This product is awesome! I didn’t need to know how to use it, it told me what to do! It’s the interface, man, if that’s the right word? It’s dumbing it down to a guy who really has no interest or clue about modern technology or trucks.”

Grant B.


5 stars

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.


OTR Diagnostics Features at a Glance

Multiple Vehicle Vin

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

Read and Reset Fault Codes

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

Fault Code & Command History

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

Reset Emission Derates

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

Start 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.

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).

Offline Mode

Use OTR Diagnostics even in locations with no service or data with up to 14-days from your last online session.

Who drives OTR Performance

They say it takes a lot of time and know-how to uncomplicate the complicated. We worked hard to simplify these advanced tools so you can get on with your haul.

We created the OTR tools for owner-operators, small fleets, technicians, and pre-owned dealers.

OTR tools are cost-effective, easy to use, and built to give you what you need to take ownership of your vehicle.

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.