Indianapolis • Heavy-Duty Diesel
Why DPF issues show up at the worst time, and how a mobile tech can help you avoid repeat derates.
DPF problems never seem to show up on an easy day. They wait for a hot load, tight hours, or a stretch of Indy traffic. A truck derates, the regen will not complete, and everyone suddenly becomes an aftertreatment expert.
Most of the time, the aftertreatment system is not the villain. It is reacting to real issues upstream: low idle time with high soot load, leaky charge air piping, lazy sensors, or a history of short-trip duty cycles. A good mobile tech looks at data, not just lights on the dash.
The best time to talk about DPF care is not on the shoulder. It is during PM. Checking for active and inactive codes, monitoring soot load trends, and watching regen history can warn you before a truck hits a derate. That turns an emergency road call into a planned service instead of a panic.
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