DPF cleaning, DEF repair, EGR service. Avoid derate, avoid fines, stay running.
Call (631) 939-1397Every time that check engine light comes on and your truck goes into derate mode, you're losing money. Clogged DPF filters, failed regen cycles, DEF system faults, and worn EGR valves don't just slow you down — they can trigger fines exceeding $45,000 per non-compliant vehicle. We diagnose and service the full diesel aftertreatment system: DPF cleaning and forced regeneration, DEF dosing system diagnostics, SCR catalyst service, EGR valve replacement, sensor and wiring repair, and ECM resets. We get your truck out of derate and back on the road — compliant and running clean.
Call with your symptoms — derate mode, regen failures, DEF warnings, or check engine codes.
We pull codes and diagnose the aftertreatment system — DPF, DEF, EGR, SCR, and sensors.
Clean, repair, or replace the failed components and reset the ECM.
Verify the system is out of derate, running clean, and road-ready.
The Diesel Particulate Filter (DPF) traps soot from your exhaust. Over time it clogs — especially if your truck does a lot of stop-and-go or short runs that prevent full regeneration. We clean the DPF to restore exhaust flow and prevent forced regen failures. Most trucks need DPF service every 100,000-200,000 miles, but hard-working fleets often need it sooner.
Yes. Derate mode is usually triggered by a DPF, DEF, or EGR fault. We diagnose the root cause — whether it's a clogged filter, a bad DEF injector, a faulty NOx sensor, or an EGR valve issue — and fix it so your truck runs at full power again.
Yes. We diagnose and repair the full DEF (Diesel Exhaust Fluid) dosing system — DEF pump, injector, tank, lines, quality sensors, and NOx sensors. DEF system faults are one of the most common causes of derate mode in modern diesel trucks.
All major brands — Freightliner, Kenworth, Peterbilt, International, Volvo, Mack, Hino, and Isuzu. Cummins, Detroit Diesel, Paccar, and Navistar engines. The aftertreatment systems are similar across manufacturers, and we have the diagnostic tools to work on all of them.
Call now or request a quote — we respond same-day.
Call (631) 939-1397Request a QuoteEastern Long Island — Speonk, Riverhead, Hampton Bays, Patchogue, and surrounding towns.
Call now or request a quote — we'll get you running.