Diesel Particulate Filter (Dpf) Inlet - Dirty, But Reusable - Navistar MaxxForce DT Diagnostic Manual

16.1.2. Diesel Particulate Filter (DPF) Inlet - Dirty, but Reusable

Figure 47 Diesel Particulate Filter (DPF) Inlet - Dirty, but Reusable.
Appearance
Cause
Action
Black soot or gray ash on the face of the DPF and within the channels.
The system is working properly.
The DPF can be reused.
https://www.truck-manuals.net/
DIAGNOSTIC MANUAL
161