Truck down on I-75? Call dispatch. Give us your exit, we roll to you.
Call dispatch now: (386) 555-0147DPF, DEF, and SCR faults fixed before the derate strands you.
We roll to your truck stop, scale, or mile marker on the I-75 corridor. 24/7 dispatch out of Lake City, common parts on the truck, and a straight answer on roadside versus bay.
- 24/7 dispatch, day or night
- We come to the truck
- Ranges up front, confirmed on the call
Aftertreatment faults are where good money goes to die. The codes overlap, the parts are expensive, and a derate you ignore can cook a component that costs thousands to replace.
So before anybody sells you a DPF, let’s read the truck.
Why guessing on aftertreatment burns cash
Picture the bad version. A light comes on, a shop guesses “DPF,” and you pay for a filter that wasn’t the problem. The real fault was a NOx sensor or contaminated DEF, and now the new filter is throwing the same code. You’re out the part, the labor, and the road time.
The expensive failure mode is worse: ignore a derate, keep loading the filter, and you can melt a DPF or take out the SCR. A $90 sensor becomes a $3,000 lesson. The cheap move is to diagnose it correctly the first time.
Signs your aftertreatment is the problem
- DEF light, “DEF system” message, or low-DEF-quality warning
- A speed derate that steps down the longer you drive
- Frequent or failed regens, or a regen that won’t complete
- “Service exhaust filter” or high-soot messages on the dash
- NOx sensor, DEF dosing, or DEF pump fault codes
- White smoke, a raw fuel smell, or a DEF crystallization buildup at the doser
What we bring and what we do on-site
We bring the diagnostic laptop and common aftertreatment parts to the truck: NOx sensors, DEF level and quality sensors, temperature sensors, and DEF lines.
On an aftertreatment call we can:
- Read live data across the DPF, DEF, SCR, and EGR systems to find the real fault
- Test DEF quality and dosing instead of guessing
- Command a parked regen when the filter and conditions allow it
- Replace NOx and temperature sensors, DEF lines, and dosing components on-site
- Tell you straight when a DPF needs cleaning or replacement, and clear the derate once the cause is fixed
Where we run
We cover I-75 through Columbia County and the corridor: the Lake City truck stops at Exit 427 (TA and Pilot), Love’s at Exit 414, the Petro at Exit 423, and up and down toward Valdosta, Tifton, Gainesville, and Ocala. Read us your codes when you call and we roll with the likely parts.
Aftertreatment / DPF / DEF / SCR Repair: questions truckers ask
My DEF light is on and the truck is derating. Can I keep driving?
A solid aftertreatment light usually gives you a window. A flashing light and an active speed derate means the system has stepped you down and will keep stepping down. Don't push a hard derate to the next state line. Call, read us the codes, and we'll tell you how much road you've got.
Can you do a forced regen on the side of the road?
Often yes. If the DPF is loaded but not destroyed and the cause is something we can address, we can command a parked regen with the laptop once it's safe and legal where the truck sits. If the filter is plugged solid or cracked, a regen won't save it and we'll tell you that instead of wasting your time.
Is it the sensor, the DEF, or the DPF itself?
That's exactly what the diagnosis is for. NOx sensors, DEF quality and dosing, the DEF pump, EGR, and a loaded DPF all throw overlapping codes. We read live data to find the real fault instead of selling you a $1,200 DPF when a $90 NOx sensor or bad DEF was the problem.
Down now? Don't wait on the form.
Call dispatch, give us your exit or mile marker and what the truck is doing, and we roll with the right parts on the truck.