ASE offers free webinar on MD, HD aftertreatment systems

ASE’s next training webinar on Oct. 7 will discuss medium- and heavy-duty aftertreatment systems, including discussions on specific components and diagnostics.

Oct. 3, 2025

ASE offers technician training webinar aftertreatment

The National Institute for Automotive Service Excellence is hosting a free training webinar on Tuesday, Oct. 7, at 4 p.m. ET called “Medium/Heavy Duty Truck Diesel Aftertreatment Systems.”

Hosted by Automotive Video Innovations (AVI), the training webinar will cover Nox, EGR valves and coolers, temperature and pressure sensors, the hydrocarbon doser, the DEF fluid doser, NOx sensor, DOC, DPF, SCR, CAC, VGT, DEF quality, tank manifold, heater lines, and more. The training will pair a video lecture with hands-on, real-world tests and diagnosis demonstration.

The training’s topics include:

Turbo overview and diagnostics
Diesel particulate filter (DPF)
Nitrogen oxides (Nox) sensors
Diesel exhaust fluid (DEF) storage and pump
Fuel condition

Those who attend the session will receive a certificate of attendance, which will arrive about a week after the event by email. If you can’t attend the live session, ASE still encourages registering so that you can access a recording of the webinar later.