Speed change now available in OTR Remote Diagnostics for Detroit Diesel · Read more

OTR Remote Diagnostics

See every truck.
Make the next call fast.

OTR Remote Diagnostics gives you remote commands, fault codes and live data on every truck so you can decide the next step from anywhere.

Get Started

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OTR Remote Diagnostics fleet dashboard and fault code detail

Up and running in minutes.

Works with Cummins, Freightliner, Western Star, Volvo, Mack and Peterbilt

Plug in.

Install the OTR Remote Diagnostics module at each truck's 9-pin or OBD diagnostic port.

OTR Remote Diagnostics module connected over cellular

Connect.

Cellular connection activates automatically. No setup required.

Live alerts streaming from trucks

Monitor.

24/7 data streaming to your dashboard. Every truck, every parameter.

Send a forced DPF regen command

Act.

Send commands from any device, anywhere.

Dealer-level diagnostics, from anywhere.

8 active codes? You see exactly what's happening and why.

Fault codes + troubleshooting

Fault code detail with troubleshooting and repair steps
  1. OTR Remote DiagnosticsDealer-level diagnostic intelligence, 24/7.
  2. Your trucksEvery truck, every parameter.
  3. Cellular connectionActivates automatically. No setup required.
  4. Your fleet dashboardFault codes, live data and remote commands for every truck in your fleet, from any device, anywhere.

Stop waiting for the call. Start seeing everything.

A device plugs into each truck's diagnostic port and streams data over cellular to a web dashboard. You can see fault codes, monitor engine data, and send remote commands (like forced regens) from anywhere. It's the same diagnostic intelligence we've built over six years with OTR Diagnostics, but now it works 24/7 without anyone being at the truck.

What if you got the alert before your driver even noticed? That's OTR Remote Diagnostics.

From reactive to proactive

See all trucks at a glance.

Know exactly which trucks need attention before your drivers do. Your whole fleet on one screen: a fleet health score, live status and location for every truck.

Critical, warning, normal, offline. Search by truck number or VIN. No spreadsheets, no phone tag.

Get started

Remote commands

Force regens and reset derates from your desk.

Soot at 98%? Start a forced DPF regen remotely. Watch the temperatures climb in real-time. See elapsed time. Abort if needed.

Reset codes and derates remotely to get trucks back on the road, and schedule commands to execute when conditions are right. No tech dispatch. No tow. No wait.

Get started

Simple fixes shouldn't need a $150+ roadside service call. Reset codes and derates remotely.

Remote commands

Vehicle speed change

Change speed limits from your desk.

Set max road speed, max and min cruise speed, and idle shutdown on 2011+ Freightliner and Western Star trucks with Detroit DD13, DD15 and DD16 engines. Truck online, key on, engine off, and the change goes straight to the engine.

The engine reads the new value back, so your dashboard shows what the truck actually took. Every change is logged with who made it and when. No laptop in the cab, no trip to the dealer.

See how it works

Speed and idle settings are part of your plan. No per-change fee.

Vehicle speed change

Derate alerts

Know about derates before your driver. See the countdown to lockout.

Right now, you don't know there's a problem until the phone rings. By then, the truck is already in derate, or worse, stranded.

OTR Remote Diagnostics tells you why your truck is going into derate and what's actually wrong with the engine. Get derate alerts with countdown timers to take action early, then reset derates remotely.

Get started

On any device, anywhere

See fault codes before the driver calls.

Phone's ringing. Driver's stranded in Missouri. Critical, or a nuisance code? Without OTR Remote Diagnostics you can't tell from here, and you are coordinating repairs from 500 miles away, hoping it is not serious.

With it, you see active and inactive codes, warning light status and code severity from any device, plus real-time location on the map, so help goes to the right place the first time.

Get started

$400–800 in lost revenue for every hour you spend guessing instead of knowing.

Guessing costs

From reactive to proactive

Stop waiting for the call. Start seeing everything.

✕ Without OTR Remote Diagnostics

Reacting to problems

  • ✕ Driver calls about a warning light—you have no idea what's happening
  • ✕ Trucks go into derate without warning, stranding drivers
  • ✕ Simple fixes require $150+ roadside service calls
  • ✕ No visibility into aftertreatment health until it's too late
✓ With OTR Remote Diagnostics

Preventing problems

  • ✓ See fault codes the instant they trigger, before the driver even calls
  • ✓ Get derate alerts with countdown timers to take action early
  • ✓ Reset codes and derates remotely—get trucks back on the road
  • ✓ Monitor aftertreatment data 24/7 across your entire fleet
EVERYTHING YOU NEED

Manage your entire fleet from anywhere

Fleet Dashboard

See all trucks at a glance. Critical, warning, normal, offline. Instantly searchable by truck number or VIN.

Fault Codes + Troubleshooting

View active codes with full troubleshooting info. Reset codes and derates remotely to get trucks moving.

GPS Tracking

Real-time location for every truck. Current speed while driving, last-known position when offline.

Live Data Streaming

DEF level, coolant temp, oil pressure, soot level, boost, and 60+ live data parameters streaming in real-time.

Remote Regen

Start a forced DPF regen from anywhere. Schedule commands to execute when conditions are right.

Derate Alerts

Know about derates before your driver. See countdown to lockout. Reset derates remotely.

New

Vehicle Speed Change

Change max road speed, max and min cruise speed, and idle shutdown from your desk on 2011+ Freightliner and Western Star trucks with Detroit DD13, DD15 and DD16 engines. The engine confirms every change, and each one is logged with who made it and when.

COVERAGE

Works with your trucks

Full support for major diesel engines through 2026 model year.

Detroit Diesel engine
2011+
Detroit Diesel
Cummins engine
2011+
Cummins
Paccar MX engine
2011+
Paccar MX
Volvo engine
2014+
Volvo
Mack engine
2014+
Mack

Already have telematics?

Good. Keep it. Your ELD handles compliance—location tracking, hours of service. OTR Remote Diagnostics handles diagnostics—fault codes, derate alerts, remote commands. Different tools, different jobs. They work together.

Fleet compatibility

Will OTR Remote Diagnostics work with your fleet?

Check one vehicle configuration, then add additional trucks to see your fleet coverage.

THE MATH

A few prevented breakdowns pay for the subscription

$150–400
Typical roadside call
$500–1,500
Average tow cost
$800+
Per day of downtime
8.7 days
Avg downtime/truck/year

One breakdown

$400 roadside call + $1,000 tow + 2 days × $800 = $3,000 per incident

Prevent just three breakdowns a year across an 11-truck fleet and you save $9,000/year.

OTR Remote Diagnostics costs less than $6,600/year for your entire fleet.

Get a quote for your fleet

Tell us how many trucks you run. We will send your custom pricing.

Or call us at (586) 799-4375

Frequently Asked Questions

General Questions
OTR Remote Diagnostics is a fleet diagnostic monitoring system. A device plugs into each truck's diagnostic port and streams data over cellular to a web dashboard. You can see fault codes, monitor engine data, and send remote commands (like forced regens) from anywhere. It's the same diagnostic intelligence we've built over six years with OTR Diagnostics, but now it works 24/7 without anyone being at the truck.
OTR Diagnostics requires a phone plugged into the truck. It's great for owner-operators and drivers who want to diagnose their own trucks. OTR Remote Diagnostics is always connected. It's built for fleet managers who need visibility across multiple trucks without relying on drivers to plug in and check. You can see what's happening with any truck from anywhere, and send commands (like forcing a regen or resetting fault codes) remotely.
Those are telematics platforms. They're built for compliance, location tracking, and driver behavior. They tell you where your trucks are and whether drivers are following HOS rules. They're good at that. OTR Remote Diagnostics is built for diagnostics. We tell you why your truck is going into derate, what's actually wrong with the engine, and we let you fix it remotely. We're not trying to replace your ELD. We're filling the gap your ELD can't fill. Your telematics system might tell you a truck has a check engine light. OTR Remote Diagnostics tells you it's a P20EE code, SCR efficiency below threshold, you've got 100 miles until derate, and here's what you can do about it right now. Most of our customers run OTR Remote Diagnostics alongside their existing ELD because they solve different problems.
Yes, OTR Remote Diagnostics requires a 2-truck minimum. It's designed for fleets, not single-truck operations. If you're running one or two trucks, OTR Diagnostics is a better fit for your needs. That said, the real power of OTR Remote Diagnostics is seeing patterns across your fleet: which trucks keep having the same issues, where your maintenance dollars are actually going.
Compatibility
OTR Remote Diagnostics supports: Detroit Diesel DD13, DD15, DD16 (2011 and newer), Cummins ISX, X15, ISB, ISL (2011 and newer), Paccar MX-13, MX-11 (2011 and newer), Volvo D11, D13, D16 (2014 and newer), Mack MP7, MP8 (2014 and newer). If you're running Class 8 trucks from the last 10-15 years, we likely support them. If you've got a mixed fleet, we can look at your specific trucks and tell you exactly what's covered.
OTR Remote Diagnostics monitors the truck's engine and aftertreatment systems. It does not monitor trailers, reefer units, or trailer ABS systems.
Installation
It plugs into the truck's 9-pin or OBD diagnostic port. Takes about 10 minutes per truck. No shop time, no downtime. We include detailed instructions with every device.
No. OTR Remote Diagnostics is a diagnostic tool that plugs into the standard diagnostic port. It does not modify any truck systems. This is the same port dealers and shops use for diagnostics.
Yes. Contact our support team to reassign a device to a new truck. We'll update your dashboard to reflect the change.
You'll receive an immediate notification that the device was disconnected. You'll also see exactly when and where it happened.
Features & Capabilities
Depending on engine make and model, you can: Force a DPF regeneration, reset fault codes, clear certain derates, and view live engine parameters. On Detroit DD13, DD15 and DD16 trucks you can also change speed limits and idle shutdown. Not all commands are available on all engines. Check with our team for your specific trucks.
Yes, on 2011 and newer Freightliner and Western Star trucks with Detroit DD13, DD15 and DD16 engines. From the dashboard you can change Max Road Speed, Max Cruise Speed, Min Cruise Speed, Idle Shutdown and Idle Shutdown Time. The truck needs to be online with the key on and the engine off, and password-protected settings need the engine's four-character password. The engine reads the new value back to confirm it, and every change is logged with who made it and when. Support for Cummins, PACCAR, Volvo and Mack is planned.
Alerts are sent within seconds of a fault code triggering. You'll know about problems before your driver calls you.
OTR Remote Diagnostics monitors trends in your engine data (soot levels, temperatures, regen intervals) that signal developing problems. Our AI diagnostics help identify issues before they become breakdowns. We're not just reading codes. We're watching the data that leads to codes.
OTR Remote Diagnostics provides full diagnostic information, not just code numbers. You'll see what the code means, what typically causes it, whether it's likely to cause a derate, and recommended next steps.
Data & Connectivity
OTR Remote Diagnostics stores data locally on the device when cellular coverage drops. Once the truck returns to a coverage area, all stored data automatically syncs to your dashboard. You won't lose any fault codes, alerts, or diagnostic data during the outage.
OTR Remote Diagnostics uses multi-carrier cellular connectivity to ensure the best coverage across the continental US. Cellular service is included in your subscription.
OTR Remote Diagnostics only tracks location when the truck ignition is on. When the truck is parked and off, location updates stop.
No. OTR Remote Diagnostics draws minimal power and has smart sleep features when the truck is parked. It won't drain your batteries even after extended periods of sitting.
Security & Privacy
You do. OTR Performance does not sell or share your fleet data with third parties. Your diagnostic data, fault history, and truck information belong to your company.
Yes. All data transmitted from OTR Remote Diagnostics devices is encrypted. Data stored in our cloud is protected with industry-standard security measures.
OTR Remote Diagnostics monitors the truck's diagnostic systems, not driver behavior. It tracks fault codes, engine parameters, and vehicle health. It does not record audio, video, or cab activity.
Dashboard & Users
Yes. You can configure which team members receive alerts for specific trucks or groups of trucks. Send driver alerts to dispatch, critical derates to management, and maintenance codes to your shop.
OTR Remote Diagnostics currently works through a web dashboard accessible from any device with a browser. A dedicated mobile app is coming soon.
Yes. You can export fault history, maintenance reports, and fleet health summaries from the dashboard.
Integrations
OTR Remote Diagnostics works alongside your ELD but doesn't replace it. Your ELD handles compliance (HOS, logs). OTR Remote Diagnostics handles diagnostics. Different tools for different jobs.
No. OTR Remote Diagnostics works alongside your existing ELD or telematics. Most of our customers run both because they solve different problems.
Pricing & What's Included
The hardware is purchased outright. It's yours. No leasing, no equipment return requirements.
Your subscription includes: 24/7 diagnostic monitoring, cellular connectivity (no separate data plan needed), dashboard access for your team, fault code alerts, remote command capabilities, remote speed and idle settings on supported Detroit Diesel trucks, AI-powered diagnostics, GPS tracking, software updates, and customer support.

Ready to take control of your fleet?

Get dealer-level diagnostics on every truck, accessible from anywhere, at any time.

Get Started

Questions? Call us: (586) 799-4375