DPF Parts Direct Blog

A Practical Guide to Heavy-Duty NOx Sensors

A failed NOx sensor is more than just a check engine light; it's a threat to your uptime that can lead to costly engine derates and wasted fuel. This guide provides the expert knowledge you need to accurately diagnose failures, make smart repair decisions, and keep your trucks profitable.

Includes a Downloadable Quick Reference Guide to NOx Sensor Fault Codes!

Your Essential Guide to Particulate Matter (PM) Sensors

This visual article serves as a comprehensive guide to Particulate Matter (PM) sensors in heavy-duty diesel trucks, explaining their function, maintenance, and troubleshooting. It highlights how proper PM sensor care contributes to cleaner emissions, improved fuel efficiency, lower maintenance costs, and increased vehicle uptime.

What the F.A.Q. – All About EGT Sensors

EGT sensors track exhaust temperatures at different points in the aftertreatment process, giving the Engine Control Module (ECM) key data for best performance, cleaner emissions, and longer part life.

Part 2 of our EGT sensor series offers a deeper dive with FAQs, fault code info, and charts covering their function, types, problems, testing, and upkeep.