Proformance NOx Sensor Tester – Advanced Diesel NOx Sensor Testing Tool for Trucks & Technicians
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Intro pricing ends soon Limited-time offer while inventory lasts Ships within 1-2 business days
All plans include:
- Fast NOx sensor testing (about 3 minutes)
- High-precision NO / NO₂ / NOx data analysis
- App-guided diagnostics & automated evaluation
- US-based tech support
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How to test NOx sensor？
Frequently Asked Questions
How does the Proformance NOx Sensor Tester work?
Simply connect the tester directly to your NOx sensor harness, and it automatically detects voltage (12V/24V) and J1939 protocol. The device runs a comprehensive diagnostic in about 3 minutes and displays a clear pass/fail result on the Proformance app — no manual setup required.
Which vehicles are compatible with the NOx Sensor Tester?
It supports Cummins, Freightliner, Kenworth, Peterbilt, Navistar, John Deere, Volvo, Mack, Hino, Isuzu, International, Western Star, Ford, Detroit, Paccar, Mercedes-Benz, and more.
Do I need to access the OBD2 port?
No. The Proformance NOx Sensor Tester connects directly to the NOx sensor harness, not the OBD2 port. This makes testing fast and accessible even in tight engine compartments.
How long does a NOx sensor test take?
The entire diagnostic takes about 3 minutes. You get a definitive pass/fail result plus a professional PDF report — no more guessing whether the sensor is faulty.
Can I generate a report to share with my customers?
Yes. The app generates a professional NOx detection PDF report that you can share directly with fleet managers or customers. It provides clear proof to justify repairs.
Does the NOx Sensor Tester work on both 12V and 24V systems?
Yes. The tester automatically detects whether your vehicle uses a 12V or 24V system — no manual switching needed. It also auto-detects the J1939 protocol.
Do I need a subscription to use the NOx Sensor Tester?
The tester integrates seamlessly with the Proformance app. No subscription needed — buy once, use forever with free lifetime updates.
Industrial Sensor Lookup
NOx Sensor Compatibility
Enter an OEM part number, a 5WK reference, or an SNX model to instantly check tester compatibility.
Customer Reviews
Based on 5 reviews
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Popular engine types
Volvo2Mack2Paccar1Cummins1
5reviews
B
BrianVerified
Helped me confirm the sensor was causing the fault code. Worth having in the toolbox.
VolvoMack
C
Chris B.Verified
Works as expected and the readings are easy to understand. A useful tool for my shop.
Paccar
J
James TVerified
Easy to connect and use. It helped me check the NOx sensor quickly.
Cummins
J
JohnsonVerified
I bought this tester because I kept getting a NOx sensor fault on my truck and didn’t want to replace parts without confirming the problem first. It was easy to connect, and I was able to see the sensor readings right away. The instructions could be a little more detailed, but overall it worked as expected and helped me find the issue.
Detroit Diesel
J
janeVerified
We purchased this tester mainly for truck NOx sensor diagnostics. It is very useful for checking sensors used in SCR systems on diesel trucks. The device responds quickly and provides stable readings. It saves a lot of time compared to replacing sensors blindly. Good tool for truck repair shops.
MackVolvo
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