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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.

The problem

Right now, you're managing your fleet blind.

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

The call
5:47 AM

Phone's ringing. Driver's stranded in Missouri. Critical, or a nuisance code? You can't tell from here.

Guessing costs
$400–800

Lost revenue for every hour you spend guessing instead of knowing.

No information
500 mi

Coordinating repairs from 500 miles away, hoping it's not serious.

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

Fleet dashboard

See all trucks at a glance

Know exactly which trucks need attention before your drivers do.

Get started

Stop calling drivers for status updates

Your whole fleet on one screen: a fleet health score, live status and location for every truck.

01
04
HOW IT WORKS

Up and running in minutes

1

Plug In

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

2

Connect

Cellular connection activates automatically. No setup required.

3

Monitor

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

4

Act

Send commands from any device, anywhere

Dealer-level diagnostics, from anywhere

Fault codes, live data and remote commands for every truck in your fleet.

Fault code detail with troubleshooting and repair steps
Fault codes

Full diagnostic details, not just code numbers

See active and inactive codes with full troubleshooting info. Warning lights status. Code severity. What it means. What to do about it.

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

Get started →

Truck-003

2020 Freightliner Coronado | Detroit Diesel DD15 Engine | VIN: 3AKJHHDR2LSLR0510
Live · Just now

Engine & Vehicle Metrics

Engine RPM 605
Speed 0mph
Engine Load 13%
Coolant Temp 190°F
Fuel Level 72%
Battery 13.9V

Speed & Cruise Control

Current Speed 0mph
Cruise Control —
Max Speed 65mph
Park Brake ON

Fluid Levels

Fuel Level 72%
DEF Level 10%
Coolant 97%
DEF Quality 32.5%
DEF Temp 72°F
Idle Fuel 0.6k gal

Temperatures

Coolant 190°F
Charge Air 115°F
EGR 423°F
Ambient 67°F
Boost 3psi
Turbo 63%

Aftertreatment System

SCR Inducement Active
DEF Level Low
55 mph max Max Speed
Level 3
Diesel Exhaust Fluid tank is running low. The system requires DEF to reduce NOx emissions.
Speed: 55 mph max Torque: 75% Next level: ~2 hours to Level 4
Action: Refill DEF tank immediately. Use only API-certified DEF fluid.
Live data

60+ live data parameters streaming in real-time

Speed, RPM, fluid levels, oil pressure, soot level, boost, temperatures. All streaming 24/7. Plus aftertreatment monitoring with derate alerts and countdowns.

SCR inducement active? You see the countdown and know exactly what action to take.

Get started →
Forced DPF Regeneration In Progress
Started: 8:57:20 AM
02:15
Elapsed Time
Exhaust Temperatures
Turbo
768°F
DOC Inlet
885°F
DPF Outlet
970°F
SCR Outlet
536°F
Engine & Emissions
RPM ↕
598
NOx In
583
PPM
NOx Out
125
PPM
Coolant
180°F
Turbo Vane
62%
SCR Eff.
78.6%
DPF Soot Level
87.0%
Reduced 12.0%
0% 100%
Aftertreatment System
NOx Reduction
583
Inlet ppm
125
Outlet ppm
78.6%
SCR Eff.
DPF Health
87.0%
Soot Level
42
Pres kPa
62%
Turbo Vane
DEF System
64%
Tank Level
32.4%
Quality
75°
Tank Temp
EGR System
38%
Valve Pos
8
kg/hr
440°
EGR Temp
DEF Dosing System
Supply Valve
0%
Dosing Valve
0%
Purge Valve
0%
Regen Fuel
290kPa
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.

No tech dispatch. No tow. No wait.

Get started →

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.

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

One prevented incident pays 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

For an 11-truck fleet

11 trucks × 8.7 days × $800/day = $76,560/year in downtime

Prevent just 10% of that? You save $7,656/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. Not all commands are available on all engines. Check with our team for your specific trucks.
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, 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