Fault & command history
- Cummins
- Detroit
- Paccar
- Volvo
- International
- Mack
Know your truck — past, present and future
Every fault code and command is stored securely in the cloud, tracked by VIN — spot recurring issues, catch intermittent ghost codes, and pull up the full story from anywhere.
- 60-day money-back guarantee
- Adapter included free
- Built in Detroit, MI
With history you can
- Track recurring faults
- Catch intermittent ghost codes
- Save, print & share reports
- See your whole fleet by VIN
- Access it anywhere
All included on every plan.
Stored in the cloud
History in the cloud
- Unlock detailed explanations of each fault code.
- Understand not just the code, but the specific issue and suggested fixes.
- Empower yourself to perform your own repairs with guided diagnostics and easy-to-follow repair suggestions tailored to your truck's specific needs.
Always there
Keeping your fault codes safe
All fault codes are securely stored in the cloud, giving you access anytime and anywhere. This is helpful for tracking down recurring issues and analyzing intermittent 'ghost codes' that come and go.
OTR Cloud
Cloud based fault and command history
- Get a snapshot into your entire fleets fault codes and commands logged.
- Each vehicle is tracked by VIN, showing last active, number of active fault codes, and the last command run.
Share and print
Easy sharing and printing of fault codes
- Save, print, or share a single fault code or the entire history of fault codes for your vehicle.
- This feature is beneficial if you are planning to share the fault codes with your shop, technician, or fleet manager.
- It lets you show them exactly what’s wrong, keeping everyone honest and on the same page. This way, you can make sure your repairs are done right and on time.
OTR Diagnostics
More than history
View fault codes
You don’t just see the fault codes, you learn what they actually mean. This helps you fix problems fast and gets your truck back on the road quickly.
Real time live data
Access live data parameters from your engine and aftertreatment systems to troubleshoot.
Bi-directional commands
Perform dealer level commands, Reset Fault Codes, Reset Derates, Forced DPF Regen, & More.
OTR Diagnostics hardware
We break down the hardware that comes with your OTR Diagnostics purchase.
600+ Google reviews
Proof from the people keeping records.
I would recommend this diagnostic tool to any truck driver out there.
K O311
Google Review
One of the best apps to keep track of your aftertreatment.
Michael Erb
Google review
In my opinion this is a must have for any small operation
Manny Choate
Google Review
I recommend every truck owner / fleet / mechanic should have this device
Bill Chohan
Google Review
Get started
Your truck's whole story, in your pocket.
Each plan includes the OTR Link 2 adapter free ($299 value), full fault and command history, every dealer-level command, live data, and US-based support from Detroit.
60-day money-back guarantee · free 2-day shipping · cancel anytime