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Proformance Diagnostics – Diesel Truck Diagnostic Tools. Premium heavy-duty diagnostic equipment for Cummins, Detroit Diesel, Paccar, Volvo, and Mack engines.

The Advanced Diagnostic Tool For Truck Drivers

More Than Just a Regen Tool

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NOx Sensor Tester

Advanced Diagnostics

NOx Sensor Tester + Fast Testing + Save Time

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Trusted by 500,000+ Users Worldwide

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Avoid Costly Downtime

DPF Clogged & Derated

DPF Clogged & Derated

A clogged DPF can leave your truck derated—or off the road.

Mystery Warning Lights

Mystery Warning Lights

Codes with no clue if it's safe to drive.

Broken Down on the Road

Broken Down on the Road

Hours lost to tows and downtime.

Costly Shop Bills

Costly Shop Bills

Pricey dealer diagnostics for simple answers.

Become an Authorized Dealer

Join our network to grow your business. Partner with Proformance Diagnostics and gain access to innovative diagnostic solutions, dealer-only benefits, and ongoing support designed to help you expand your reach and increase revenue.

Become a Dealer
Become an Authorized Dealer

Find Your Use Case

Owner-Operators

Owner-Operators

Know in seconds if it's safe to drive — no guessing, no waiting.

Fleet Maintenance Teams

Fleet Maintenance Teams

Cut diagnostic time from hours to minutes and catch issues early.

Mobile Diesel Mechanics

Mobile Diesel Mechanics

Run OEM-level diagnostics on-site without a laptop.

Used Truck Inspections

Used Truck Inspections

Pull fault codes and negotiate with data, not gut feel.

Featured Articles & Latest News

All Articles
Blog post: Heavy-Duty Diagnostic Tool Comparison: Proformance Link vs. OTR Diagnostics vs. Diesel Decoder

Buyer's Guide

Heavy-Duty Diagnostic Tool Comparison: Proformance Link vs. OTR Diagnostics vs. Diesel Decoder

Blog post: DPF Regeneration: Types, Process & Forced Regen Guide

Diagnostics

DPF Regeneration: Types, Process & Forced Regen Guide

Blog post: Why Your Diesel Regeneration Failed: Top Reasons and How to Fix It

Aftertreatment

Why Your Diesel Regeneration Failed: Top Reasons and How to Fix It

Blog post: How to Fix SPN 84 FMI 3 — Accelerator Pedal Position Voltage High: Causes & Solutions

Fault Codes

How to Fix SPN 84 FMI 3 — Accelerator Pedal Position Voltage High: Causes & Solutions

Blog post: DEF Quality Problems: Contamination, Crystallization, and SCR Faults

Diagnostics

DEF Quality Problems: Contamination, Crystallization, and SCR Faults

Blog post: 12V Electrical Faults on Heavy-Duty Trucks: Battery and Voltage Diagnostics

Diagnostics

12V Electrical Faults on Heavy-Duty Trucks: Battery and Voltage Diagnostics

Why Choose Proformance?

500K+ Global Users
30-Day Money-Back Guarantee
1-Year Limited Warranty
5.0 Google Rating
Lifetime Customer Support

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CONTACT INFO

(330) 791-4567
order@proformanceusa.com
1120 High Ave SW
Canton, OH 44707
Mon–Fri 9:00AM – 5:00PM (ET)

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INFORMATION+
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Heavy-Duty Truck Scanners & Diagnostic Tools

Heavy-Duty Truck Scanners & Diagnostic Tools

NOx sensor Tester

NOx sensor Tester

Accessories

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Real Diagnostics In Action

Browse Full Video Library

2017 Western Star Detroit DD13

Western Star · 47X · 2017

Proformance Link – Advanced Mobile Diesel Diagnostic Tool | More Than Just a Regen Tool

2022 Peterbilt 579 Cummins X15

Peterbilt · 579 · 2022

Proformance Link – Advanced Mobile Diesel Diagnostic Tool | More Than Just a Regen Tool

2018 Peterbilt 389 Cummins X15

Peterbilt · 389 · 2018

Proformance Link – Advanced Mobile Diesel Diagnostic Tool | More Than Just a Regen Tool

2011 FORD F-150

Ford · F-150 · 2011

Proformance Link – Advanced Mobile Diesel Diagnostic Tool | More Than Just a Regen Tool

Trusted by Professionals

5.0
Based on 5+ Google Reviews
Write a Review
James J

James J

6 months ago

“Really impressed with Proformance Diagnostics. The device is small but powerful. It easily reads and clears codes, and also supports advanced functions like DPF regen, DPF reset, and SCR efficiency checks. Fast, accurate, and very helpful for diagnostics.”

6 months ago
Ben Castellucci

Ben Castellucci

6 months ago

“I would like to start by saying that the company has amazing customer service. Which is something very difficult to find in my opinion especially with the diagnostic side of the industry. Every question I had they were quick to answer the phone and help me step by step. The Proformance link tool is easy to set up, easy to update. And even easier to use. I love how I am able to monitor my live data during a regeneration with the vehicle stopped or driving down the road. Very easy and clear information in the fault codes with significantly better troubleshooting procedures compared to some of the other tools I’ve used. The other functions they have Incorporated into the tool would make it ideal for even a shop technician to use. I Belive all around function, customer support and price point. This is a top tier tool on the market.”

6 months ago
William Smith

William Smith

6 months ago

“I’ve been using the Proformance Link scanner for a while now, and it’s worth every penny. As an over-the-road truck driver, DPF issues used to cost me time and money. This tool lets me initiate parked DPF regeneration whenever needed, reset the DPF carbon load, and diagnose trouble codes fast. It reads current faults, shows clear live data (pressure, temp,), and lets me clear codes right after repairs.”

6 months ago
Zach

Zach

6 months ago

“As a Volvo truck driver, I’ve used several diagnostic tools, and this one stands out for its speed, accuracy, and practical functions. It helps identify fault codes clearly, saves troubleshooting time, and supports key service tasks that matter on the road. The interface is straightforward, and the system feels built by people who understand real trucking needs. For owner-operators or fleet drivers working on Volvo trucks, this tool is a solid investment.”

6 months ago
Keith C.

Keith C.

6 months ago

“ProFormance Diagnostics checks all the boxes. As an owner operator of a one truck operation my Peterbilt always needs to be up and running. I don't like surprises and when something comes up I like to get it repaired where I want. The ProFormance Link gives me real time data, informing me of all the right information. Having an emissions tractor, I need what they deliver. Thanks Proformance!”

6 months ago
James J

James J

6 months ago

“Really impressed with Proformance Diagnostics. The device is small but powerful. It easily reads and clears codes, and also supports advanced functions like DPF regen, DPF reset, and SCR efficiency checks. Fast, accurate, and very helpful for diagnostics.”

6 months ago
Ben Castellucci

Ben Castellucci

6 months ago

“I would like to start by saying that the company has amazing customer service. Which is something very difficult to find in my opinion especially with the diagnostic side of the industry. Every question I had they were quick to answer the phone and help me step by step. The Proformance link tool is easy to set up, easy to update. And even easier to use. I love how I am able to monitor my live data during a regeneration with the vehicle stopped or driving down the road. Very easy and clear information in the fault codes with significantly better troubleshooting procedures compared to some of the other tools I’ve used. The other functions they have Incorporated into the tool would make it ideal for even a shop technician to use. I Belive all around function, customer support and price point. This is a top tier tool on the market.”

6 months ago
William Smith

William Smith

6 months ago

“I’ve been using the Proformance Link scanner for a while now, and it’s worth every penny. As an over-the-road truck driver, DPF issues used to cost me time and money. This tool lets me initiate parked DPF regeneration whenever needed, reset the DPF carbon load, and diagnose trouble codes fast. It reads current faults, shows clear live data (pressure, temp,), and lets me clear codes right after repairs.”

6 months ago
Zach

Zach

6 months ago

“As a Volvo truck driver, I’ve used several diagnostic tools, and this one stands out for its speed, accuracy, and practical functions. It helps identify fault codes clearly, saves troubleshooting time, and supports key service tasks that matter on the road. The interface is straightforward, and the system feels built by people who understand real trucking needs. For owner-operators or fleet drivers working on Volvo trucks, this tool is a solid investment.”

6 months ago
Keith C.

Keith C.

6 months ago

“ProFormance Diagnostics checks all the boxes. As an owner operator of a one truck operation my Peterbilt always needs to be up and running. I don't like surprises and when something comes up I like to get it repaired where I want. The ProFormance Link gives me real time data, informing me of all the right information. Having an emissions tractor, I need what they deliver. Thanks Proformance!”

6 months ago
View all reviews on Google