The 9 aftertreatment components you must know on your truck
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In this video, You’ll learn all about your 9 aftertreatment components that make up your afterttreatment system.
Stuck on the side of the road because of an aftertreatment derate? Or your truck wouldn’t do a regen on its own? Every trucker has been there. You lose time, money, and control because of a problem you can’t even see.
That’s why I built OTR Diagnostics. To give truckers the power to diagnose and fix their own trucks without relying on a dealer or waiting days for help.
Now, we’ve taken it one step further with OTR Assist — the first AI-powered diagnostic system built specifically for heavy-duty trucks.
OTR Assist puts OEM diagnostic fault code data directly inside OTR Diagnostics and explains everything in plain English. It provides instant explanations, repair guidance, and step-by-step troubleshooting the moment a fault appears.
It’s trained on OEM data and enhanced with real-world repair intelligence, so every answer is built on the same knowledge trusted by dealers and fleets.
Whether you drive a Peterbilt, Kenworth, Freightliner, Volvo, Mack, or International, OTR Diagnostics gives you full control of your truck’s health from your phone or tablet.
I’m Jason Chise, a former diesel technician who got tired of complicated dealer systems and watching truckers get stuck over simple problems. So I built the solution I wish I had in the shop. Simple, fast, and made for drivers who want control.
If you own a truck, this is the one tool that pays for itself the first time you use it.
Be Blessed,
Jason
Founder and CEO, OTR Performance
All product and company names are trademarks or registered trademarks of their respective holders. Use thereof does not imply any affiliation or endorsement.
Timestamp
00:00 - Intro
00:24 - 1. DOC
01:10 - 2. DPF
02:39 - 3. SCR
03:46 - 4. DEF Doser
04:35 - 5. NOx Sensors
05:51 - 6. Temperature Sensors
06:24 - 7. DPF Pressure Sensors
07:34 - 8. ECM
08:39 - 9. EGR Valve
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All product and company names are trademarks™ or registered® trademarks of their respective holders. Use thereof does not imply any affiliation or endorsement.