Derates cleared
Aftertreatment — DPF & DEF
DPF, DOC, SCR, DEF pumps, NOx sensors, and forced regens. Get out of the 5-mph derate.
A derate countdown is the fastest way to lose a load. We diagnose aftertreatment faults properly — DPF soot loading, failed NOx sensors, DEF quality and dosing, EGR and turbo issues that cause them — and get the truck back to full power without tearing out what still works.
Sound familiar?
- Derate warning or 5-mph limp
- DEF light or 'poor DEF quality' message
- Regen won't complete or happens constantly
- Loss of power and poor fuel mileage
What's included
- Forced regens and aftertreatment resets
- DPF removal for cleaning or replacement
- NOx, temperature, and pressure sensor replacement
- DEF pump, injector, and heater repair
- EGR valve and cooler service
Aftertreatment — DPF & DEF — anywhere in Johnson County.
Tell us where the truck is and what it's doing. You'll hear back from the mechanic who'll show up — real ETA, straight quote, no dispatcher in between.