DEF & Emissions Systems
Maintaining and repairing diesel exhaust fluid systems and emissions control technologies in commercial vehicles and equipment.
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Current Skill
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Future-Proof
Why It Matters
AI-based diagnostics identify emissions system faults faster, but technicians who understand SCR catalysts, DPF regeneration, and NOx sensors perform the physical repairs that keep fleets compliant.
How to Get Started
Complete an ASE diesel emissions certification program and get hands-on training with OBD-II and manufacturer-specific diagnostic tools for Cummins, Detroit, or PACCAR engines.
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