Emissions & Aftertreatment
Diagnosis and repair of the whole aftertreatment system DPF, DOC, SCR, DEF, and EGR to clear derates and keep you compliant. Legal, EPA- standard work only.
Bake & Flow-Test
System Repair
Cooler & Valve
Diagnosis
Compliant Only
The Problem
Modern emissions systems are unforgiving. A clogged DPF, a bad DEF quality sensor, or a failed NOx sensor can trigger a derate that drops the truck to 5 mph and no amount of driving clears it. The system is also interconnected, so a cheap sensor fault often hides behind an expensive-looking symptom.
We diagnose the aftertreatment as a system: DOC, DPF, SCR, DEF dosing, EGR, and the sensor network that ties them together. That means we clear the actual fault instead of throwing a new DPF at a sensor problem. And to be clear we perform legal, EPA-compliant repairs only. We do not delete or tamper with emissions equipment.
What’s Included
We treat the aftertreatment as one connected system diagnosing dosing, flow, and sensors together so the derate actually clears and stays cleared.
Read active and stored codes across the engine and aftertreatment, and map the derate to its true source.
Professional bake-and-flow DPF cleaning with before/after flow testing or replacement when the substrate is spent.
DEF dosing and quality-sensor faults, NOx sensors, SCR catalyst, and EGR cooler/valve diagnosis and repair.
Forced regen, reset counters, and confirm the fix under load before the truck leaves the shop.
DPF bake-and-flow cleaning with documented flow-test results
DOC, DPF, and SCR catalyst diagnosis and replacement
DEF dosing unit, pump, and quality-sensor service
NOx and temperature sensor testing and replacement
EGR cooler, valve, and delta-pressure repair
Derate and limp-mode root-cause diagnosis
Forced/parked regeneration and counter reset
EPA/CARB-compliant repairs only — no deletes or tampering
Who We Serve
Any diesel with a modern emissions system 2010-and newer highway tractors, vocational trucks, buses, and medium-duty chassis.
Cummins, Detroit, PACCAR, Volvo, and Mack aftertreatment systems throwing derates or regen faults.
Stop-and-go duty cycles that soot up DPFs fast and need frequent regen and cleaning.
Transit and school buses plus Isuzu/Hino chassis with SCR and DEF system faults.
Freightliner / Detroit
Kenworth & Peterbilt / PACCAR
Volvo & Mack
International
Cummins-Powered
Isuzu / Hino
Facility & Capability
DPF cleaning and aftertreatment work is done in-house with
proper filter-cleaning equipment and ventilation not farmed out so turnaround stays fast and flow-tested.
In-house DPF bake oven and flow-test bench
DEF quality testing and dosing- system tooling
Loaner/rental DPF options to reduce downtime where available
OEM aftertreatment diagnostics for all major platforms
Ventilated, PPE-controlled filter- handling area
Mobile diagnosis for derated trucks stuck in the field
Certifications
Technically accurate, emissions-compliant repairs documented and warranty-backed.
Qualifying repairs carry a 12-month / unlimited-mile warranty honored at 1,300+ centers nationwide.
Diesel and medium/heavy-truck ASE credentials across our technician teams. *(confirm current cert roster)*
Manufacturer-level scan tools and repair procedures for all major OEM platforms.
Aftertreatment service performed to EPA/CARB standards — no illegal deletes or tampering.
Fleet Accounts
Fleet accounts move to the front of the bay queue and get reserved slots for scheduled PM cycles.
Every unit gets a digital service file VIN, mileage, parts, and labor tracked for warranty and resale.
We batch and stagger service to keep the maximum number of trucks earning while the rest are in the shop.
Consolidated invoicing, PO workflows, and net terms for approved accounts one statement, not a stack.
Emissions and DPF service is based at our Auburn, Fayetteville, and Lawrenceville shops, reaching about 150 miles across metro Atlanta and the I-85 / I-20 / I-16 corridors, with mobile diagnosis for derated trucks in the field. (Confirm exact radius for your locations.)
FAQ
Yes, we diagnose the underlying emissions issue, perform necessary repairs or forced regens, and clear the derate codes to restore full power.
No, we do not perform emissions deletes as they violate federal EPA regulations. We specialize in legally maintaining, cleaning, and repairing emissions systems.
DPF filters typically require professional thermal or aqueous cleaning every 150,000 to 200,000 miles, depending on driving conditions and duty cycle.
Yes, bringing your truck in as soon as the warning light appears allows us to fix minor issues early before the engine goes into forced derate.
24/7 dispatch. Five Georgia locations. Certified technicians ready now.
