OTR Diagnostics | Paccar MX
OTR Diagnostics | Paccar MX
OTR Diagnostics | Paccar MX
OTR Diagnostics | Paccar MX
OTR Diagnostics | Paccar MX
OTR Diagnostics | Paccar MX
OTR Diagnostics | Paccar MX
OTR Diagnostics | Paccar MX
OTR Diagnostics | Paccar MX
OTR Diagnostics | Paccar MX

OTR Diagnostics | Paccar MX

16 reviews
Regular price $1,800.00
You Save: $1000
Unit price  per 
$200 one-time purchase hardware
$600 - 12 month PRO subscription

Note: Pro hardware includes adapters and harnesses for all makes and models, including the selected engine.

Available Engines
60 day money back

60-Day 100% Money Back Guarantee
Includes a 60-day, no-hassle money-back guarantee. If this 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.

Diagnostics Like Never Before

The days of lugging around big equipment to perform dealer-level diagnostics are over. You don’t need complicated software or multiple programs – all you need is your vehicle, a compatible mobile device, an adapter, and a Pro level subscription.

OTR Diagnostics gives you the ability to run advanced diagnostic functions, including a forced DPF regen from your mobile device.

Chassis Coverage
  • Peterbilt Trucks— All Models
  • Kenworth Trucks — All Models
What comes with the package?
  • OTR Diagnostics App Download
  • OTR Diagnostics 12 Month Subscription
  • OTR Link - Mini Adapter
  • OTR Crossover Adapter
  • Instructions Manual
paccar mx in the box
Instructions Manual
Paccar MX Commands
  • 9-Pin Plug
    • 9-Pin Plug (Black connector on truck side) 
    • Paccar 9-Pin CAN Adapter (Green connector on truck side) (2016-2020)
  • EPA10 (2011-2013)
    • Reset Fault Codes
    • Reset EGR Derate
    • Reset 5MPH DEF Derate
    • Start Forced DPF Regen
  • EPA13 (2014-2016)
    • Reset Fault Codes
    • Reset EGR Derate
    • Reset 5MPH DEF Derate
    • Start Forced DPF Regen
  • EPA17 (2017-2019)
    • Reset Fault Codes
    • Reset EGR Derate
    • Reset 5MPH DEF Derate
    • Start Forced DPF Regen
  • EPA17 (2019-2021)
    • Reset Fault Codes
    • Reset 5MPH DEF Derate
    • Start Forced DPF Regen

NOTE: OTR Diagnostics will not work with the OTR Reset Tool.

Engines Covered (9pin)
Engine MX Emission
Paccar MX-11 EPA10
Paccar MX-11 EPA13
Paccar MX-11  EPA17
Paccar MX-13  EPA10
Paccar MX-13  EPA13
Paccar MX-13  EPA17


Set up in a few simple steps.


Step 1

Purchase Pro Plan Subscription, Diagnostic Adaptor and Harness


Step 2

Connect Adapter To Vehicle Diagnostic Plug


Step 3

Download OTR Diagnostics App For Your Mobile Device


Step 4

Begin Using OTR Diagnostics App

Owner Operator

Customer Review

Voice of our customers



Enhanced Fault Code Descriptions

Read Fault Codes. You’ll be provided with enhanced detail fault code information.

For instance, you’ll see the following displayed:

  • SPN 27 FMI 3
    EGR valve position sensor circuit
    Engine Controller

Detailed fault code information, will be provided such as description, troubleshooting, symptoms and possible fixes.


Fault Code Commands

Reset Active Fault Codes. Fault codes that determine that there is an existing issue. Certain active fault codes can be cleared, however, if the problem has not been fixed the fault code will reappear prompting you to seek service.

Reset Inactive Fault Codes. Fault codes that indicate that there was a previous issue.

Clear first-time ‘Ghost’ Codes. To get rid of ghost codes, all you have to do is reset the fault codes with OTR Diagnostics.

What’s a ghost code? Specific trucks will display fault codes on the dashboard, and most of the time you’ll have a check engine light or a check module message. After this, a screen will appear stating that the error has occurred. Many of the codes that appear on your dashboard fall into the category of “ghost” codes, meaning that the fault code was triggered by certain conditions that are nearly impossible to recreate. To get rid of ghost codes, all you have to do is clear fault codes with the OTR Diagnostics and clears the DTCs once. Note that if the fault code comes back a second time, you do need to take the matter seriously.


Aftertreatment Commands

Forced DPF regen. A forced DPF regen is performed when a diagnostic scan tool, such as the OTR Diagnostics, starts the regen process. The DPF soot load could be too high for a passive or active regen to occur, meaning you’ll need to perform a forced DPF regen.

Reset Ash Accumulators. Ash accumulators have stored values in the engine control module (ECM). Ash level includes measurement of ash in the DPF.

Reset DPF Accumulators. DPF accumulators have stored values in the engine control module (ECM). DPF level includes measurement of soot in the DPF.

Reset Aftertreament Learned Data. Measurement of learned data based on various engine components to adjust your injection timing based on characteristics of your engine sensor values.

Reset DPF Regeneration Timers. Measurement of time since the last DPF regen occurred. The calculation is based on time, miles driven, and fuel usage.


Fault code history and command history

Quickly reference recent fault codes, how often they occured and date stamp when it first occured.

View commands with status history for how long forced DPF regen lasted, clearing fault codes and reset aftertreatment status.

live data

Display Parameters

Live data is information that gets updated in real time. This includes vital information about your engine and your aftertreatment system. The live data fields will be updated in real time through the Bluetooth connection.

Why is live data important? Live data is an important feature that can help solve an intermittent issue or it can be used to get more information from your aftertreatment system during a DPF regeneration.

Some of the parameters you can track with OTR diagnostics include

  • DEF Fluid Level
  • DPF Soot Level
  • EGR Value Position
  • Aftertreatment Exhaust Temps
  • Battery Voltage
  • Boost Pressure
  • Accelerator Pedal Position
  • Engine Fuel Delivery Pressure
  • + many more

OTR Diagnostics FAQ

How does the subscription work? 

Subscriptions are based on a 12 month basis.

Does this App need to be online to be used?

OTR Diagnostics is bluetooth based and does require you to have Wifi or cellular coverage for you to be able to use the app.

I currently have a compatible Bluetooth Adapter. How can I purchase only a subscription?

Stand-alone OTR Diagnostics subscriptions are available by contacting us - Contact us today!

If I have an existing OTR Performance account, how do I link my OTR Diagnostics subscription to the account?

When purchasing a subscription, you must use the same email on your existing account when you are on the checkout page. Then it will automatically link your subscription to your existing account. If you are having problems managing your subscriptions, click here

Which platforms Is OTR Diagnostics available for?

OTR Diagnostics works on iOS and Android mobile phones and tablets.

How do I create an account?

We have a couple of different ways to create an account. You can create an account on a web browser OR by using the mobile app. Follow the details below to get started.

Create account with otrperformance.com

  • Create an account on a web browser at OTR Performance
  • Purchase your subscription and use your email that is attached to your OTR account.
  • Download and use credentials created to use the mobile application.

Create account on the OTR Diagnostics mobile app

  • You can register by using the app
  • Purchase your subscription and use your email that is attached to your OTR account.
  • Use credentials created to login into mobile "OTR Diagnostics" Application

Now Available!

Download Today!

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 doesn’t fit your needs for any reason, just let us know within 60 days, 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. Real help from real people, when you need us! Contact us via phone, chat, or email anytime.

  1. This product will not bypass the operation of any emission control component. This is used solely to reset the modules after replacing aftertreatment components or initiating a forced regeneration.
  2. Phone and/or tablet not included.
Customer Reviews
4.9 Based on 16 Reviews
Write a Review Ask a Question

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
John G.
United States United States
I recommend this product
Owner opp

Awesome does everything they claimed it would do

Henry V.
United States United States
I recommend this product
Product and price

I want to give the product 5 stars but the only reason I’m giving 4 stars it’s because when I purchase the product I clearly ask the person in the phone if I need to purchase the subscription every year he made it sound as if I didn’t. But then I got an email saying to renew the subscription I will have to pay another $600 dollars after 12 months ok he could of said it’s gonna cone out of your credit card every 12 months. Now I got to say at the moment the product has help me a few times I’m pleased about that. They could also include a digital diagram of the engine and help you to localize sensors location and all that.

Johnny F.
United States United States
I recommend this product
Happy customer

It did all it was advertised to do I would recommend this to any owner operator Make a trip to the dealer not necessarily the only option

OTR Performance® Inc. OTR Diagnostics | Paccar MX Review
Steven P.
I have to say it

I have to say it has been very useful I am very pleased

Bernard P.
Love being able to see

Love being able to see live data and checking for codes. Real easy to use

Jonathan J.
Works perfectly

Works perfectly

Fred O.
The best product on the market today

Really enjoy how much information is offered with this tool and details how to fix the problem with a expensive bill at the end besides buying the parts .. For a owner operator you can’t go wrong with this tool trust me

Jeffrey C.
2016 Peterbilt 579 - Paccar MX13

This tool is Amazing!!! My truck showed a SCR system altered or fault detected on the dash. The engine went into derate mode and I thought that I was going to spend a lot of money for repairs. Instead, I went online and did some research and came across OTR Performance. I read the reviews and since I was within an hour from them, I decided to drive over their business and purchase the OTR Diagnostic tool. I then drove to the TA in Dexter, MI, followed the instructions, read about the codes and was able to clear the codes. Then I was able to performed a DPF Forced Regen. My truck started smoking like a chimney, I figured it would since I purchased the truck in August 2020, I was not able to perform a manual or parked regen. Now I'm on my 4th forced regen and now the truck is smoke free. I'm a very satisfied customer and I highly recommend this tool to every owner operator that's having issues with the DPF system or if your not sure what your engine codes are. It sure has saved me from going to the shop and spending a lot of money. I also like the Live Data that allows you to see what the truck is doing. Lots of information. Special thanks to David and everyone at OTR Performance for a wonderful and easy to use tool.

Jeff H.
Paccar diagnostics

A great tool for the paccar owner. Tons of information. It can help diagnose problems with the MX13 engine. The only thing I would put on a wish list is a conversion list from spn / fmi codes to paccar p codes.

Glenn F.
Works like a charm!

Reads and clears the codes, so I don't ever have to drive with a light on the dash. Also needed the ability to do a parked regen and keep the system clean. Works like it should. I love the explanation of the codes, telling how to fix the root problem. Very helpful, and saves trips to the dealer almost every week!

Matthew S.
Way to see what each injectors doing

And also be able to isloate each injector to see which one ia going bad

Henry H.
Works really well. Good products.

Works really well. Good products.

John C.
Its a great tool. Only

Its a great tool. Only suggestion i would make would to add the target parameters for the sensors. Its great to know what they are doing in the live mode, but are useless if you don't know what they should be .

Mark W.
Beat Tool Ever - A Must Have!

The OTR tool has saved me money by enabling me to determining issues that would have required a shop diagnostic and has allowed me to force a regen before derate. This tool is a must have for any fleet.

Jose M.
Works as promised

Very easy to work with n no issues whatsoever. I have recommended to all my owner operator friends