This course is built to give technicians a solid working knowledge of modern aftertreatment emission systems - all while earning a certification upon completion. Whether you’re just starting out or need to sharpen your understanding, this training will equip you with the fundamentals to confidently service and diagnose aftertreatment-related issues.
You’ll cover the core components and operation of aftertreatment systems, including Diesel Particulate Filters (DPF), Diesel Oxidation Catalysts (DOC), Selective Catalytic Reduction (SCR), and more. The course also focuses on the importance of emission system maintenance, fault code interpretation, and a step-by-step approach to diagnosing low-power complaints and regeneration issues.
With lessons designed to apply across multiple manufacturers and industries, this course will help you approach aftertreatment systems with confidence, accuracy, and the skills needed to reduce costly downtime and avoid unnecessary part replacements.
Diesel Emission Control Overview
Three Main Diesel Emissions
Oxides of Nitrogen (NOx)
Diesel Particulate Matter
Carbon Dioxide (CO2)
Quiz - Diesel Emissions
Exhaust Gas Recirculation (EGR) Overview
Exhaust Gas Recirculation (EGR) Theory & Operation
Exhaust Gas Recirculation (EGR) Effects
Exhaust Gas Recirculation (EGR) Cold vs Hot
Quiz - EGR Systems
Phase 1 Aftertreatment Introduction
Overview (DOC DPF)
DPF Primary Function
DPF Secondary Function
DPF Differential Pressure Sensor
DOC Function
DOC Fueling
DPF Temperature Sensors
Crankcase Breather Filter
DPF Management
DPF Operation
Soot & ASH
DPF Regen Lemp
High Exhaust System Temperature (HEST) Lamp
DOC / DPF Summary
$349.00
Cummins Aftertreatment Emission System Diagnostics Virtual Classroom Training
