Fast Testing · Save Time · Smart Analysis
Proformance NOx Sensor Tester
Professional NOx diagnostics for diesel aftertreatment.
Trusted by 300,000 Drivers
Stay Ahead of Costly Breakdowns
No complicated tools, no confusing codes—just clear answers in a few taps.
Why Proformance? Because Time is Money.
In the trucking world, downtime is the enemy. The Proformance NOx Tester turns complex SCR troubleshooting into a 3-minute victory.
Eliminate "Parts Darting"
NOx sensors are expensive ($500–$1,000+). Don't replace them based on a hunch. Get definitive proof before you open a new box.
Dealer-Level Accuracy in Your Pocket
Skip the 3-week wait at the dealership. Perform deep-level diagnostics right on the roadside or in your shop.
Active-Scan™ & J1939
No manual protocol selection. Automatically identifies voltage (12V/24V) and J1939 protocols for Bosch, Continental, Cummins, or NGK.
How It Works
Three simple steps to get started with easy and efficient diesel vehicle diagnostics
Connect Device
Insert the Proformance Link device into your vehicle's OBD2 diagnostic port
Connect App
Pair and connect with the Proformance mobile app via Bluetooth
Start Diagnostics
Monitor vehicle data in real-time and enjoy worry-free driving
Connect Device
Insert the Proformance Link device into your vehicle's OBD2 diagnostic port
Connect App
Pair and connect with the Proformance mobile app via Bluetooth
Start Diagnostics
Monitor vehicle data in real-time and enjoy worry-free driving
Maximize Your Uptime with ProformanceLink. Time is money. With ProformanceLink, you fix the issue where it happens—on the road, not in a waiting room.
Universal Compatibility
Full coverage for Class 7-8 trucks (Freightliner, Kenworth, Peterbilt, Volvo, Mack) and heavy equipment.
Industrial-Grade Bluetooth
A stable connection that stays paired, even in the toughest shop environments.
Professional PDF Proof
Generate a professional PDF report. Text or email it directly to the customer to justify the repair.
Proformance vs. Traditional Testers
See how Proformance NOx stacks up against traditional testers.
Traditional Testers
30-Day Money Back Guarantee
Confirm Features
Features may vary and not all features may be supported by all vehicle makes.