NOx Sensors: The Tiny Device That Keeps Your Diesel Engine Clean
Discover how NOx sensors keep diesel engines clean & compliant. Learn symptoms, testing, troubleshooting & replacement tips. Complete 2025 guide from experts.
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Understanding Critical Data Points in Heavy-Duty Truck Diagnostics: What Every Driver and Shop Needs to Know
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Learn how to optimize oil change intervals for your fleet based on driving conditions, oil type, and engine design. Data-driven maintenance saves money and extends engine life.
Diesel Smoke Color Diagnosis Guide
Learn how to diagnose diesel engine problems by observing smoke color - black, white, or blue smoke indicators.
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Proformance Link — New Update Available September
Proformance Link app update is live: Home UI vehicle info, Workbench History, and Spanish language support. iOS v1.80 / Android v2.20B.
EGR Cooler Failure on Diesel Trucks: Symptoms, Codes, and Fix Paths
Recognize EGR cooler failure on diesel trucks—white smoke, coolant loss, related codes—and follow a practical diagnostic path before major repairs.
DEF Quality Problems: How Bad Fluid Triggers SCR Faults and Derates
Learn how poor DEF quality causes SCR faults, crystallization, sensor errors, and engine derates—plus how to diagnose and prevent downtime.
Common NOx Sensor Fault Codes Explained: Causes and Solutions
Learn the most common NOx sensor fault codes for diesel trucks, including SPN 3226, SPN 3216, P2201, and P229F. Understand causes, symptoms, and diagnostic solutions.
How to Find Your NOx Sensor Part Number
Learn how to find your NOx sensor part number fast. Check the sensor label, identify upstream vs downstream, search by VIN or ESN, and verify NOx Sensor Tester compatibility.
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