Truck Is in Derate
Reduced power, 5 MPH limp mode, or won't crank. Usually a high soot load, DEF quality fault, or a NOx sensor — we read the cause and clear it the right way.
Plugged DPF, failed regen, derated truck, or check-engine light? We diagnose and repair the whole aftertreatment system properly — and keep your truck legal, fuel-efficient, and running.
DPF, DOC, SCR, DEF, EGR — it's one system. We service the whole thing so the truck stays in regen and out of derate.
A note: We don't delete or disable emissions equipment. Removing or tampering with DPF, SCR, or EGR is illegal in Ontario, fails MTO inspection, and voids your engine warranty. We fix the system so it works the way it's supposed to.
Emissions faults usually start small. Caught early, most are a sensor or a cleaning — left alone, they end in a derate and a tow.
Reduced power, 5 MPH limp mode, or won't crank. Usually a high soot load, DEF quality fault, or a NOx sensor — we read the cause and clear it the right way.
Forced regen aborts, soot keeps climbing, exhaust temps won't get to target. Could be the 7th injector, sensors, intake leak, or a plugged DPF.
High back-pressure, frequent regens, lost fuel economy. We remove and bake the filter, inspect the substrate, and reinstall with new gaskets.
Sluggish power, EGR codes, or rough idle. Sticking valves, plugged coolers, and bad actuators all cause it — we service or replace.
Bad DEF quality, crystallization on the doser, or a frozen DEF line in winter. We test, clean, and repair the dosing side.
Light on but truck runs okay. Pending fault — we read it before it turns into a derate or a roadside inspection fail.
Four steps from check-engine light to clean regen.
Full aftertreatment scan with the OEM scanner — active, pending, and history codes. We look upstream, not just at the obvious code.
Clear estimate — cleaning, sensor, doser, EGR, or full DPF — before any wrench turns. You decide what's getting done.
DPF baked and blown out, parts replaced to spec, sealing surfaces cleaned. Done right, the system holds for the long haul.
Forced regen, soot-load reset, and a road test to confirm the system completes a full cycle before you leave.
"Good experienced staff of diesel mechanics. Reasonable price and fast service."
— Manjot Saini, Verified Google Review
No. Deleting or disabling emissions equipment is illegal in Ontario, fails MTO inspection, voids your engine warranty, and turns the truck into a problem if you ever try to sell it. We fix the system properly so you don't need to.
Depends on duty cycle, but most highway trucks need a proper bake-and-blow cleaning somewhere around 200,000–400,000 km. City work and short trips wear it faster. We measure the back-pressure and tell you where you stand.
Most of the time, yes. We scan, identify the root cause, and either complete a forced regen, replace the failed sensor or part, or clean the DPF — whatever it actually needs. We don't just clear codes and send you out to break down again.
Yes — all the common heavy-duty diesel platforms: Cummins ISX/X15, Detroit DD13/15, PACCAR MX-11/13, Volvo D11/D13, and Mack MP. If it has a DPF and DEF, we work on it.
Usually 1–2 days when we send the filter out for proper bake-and-blow cleaning. Sensor and EGR repairs are often same day. You'll get a firm timeline with the quote.
Call and you'll talk to a real mechanic, not a service writer. We'll tell you what we think before you bring it in.
| Mon – Sat | 9:00 AM – 7:00 PM |
| Sunday | 10:00 AM – 4:00 PM |
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