48 SEBU8726-03 Operation Section Aftertreatment Wall Flow Aftertreatment Illustration 38 g03373851 Typical example (1) Diesel oxidation catalyst temperature sensor (2) Diesel particulate filter (DPF) temperature sensor (3) Inlet connection for the differential pressure sensor (4) Outlet connection for the differential pressure sensor (5) Oxygen sensor Through Flow Aftertreatment Illustration 39 g03373872 Typical example (1) Diesel oxidation catalyst (DOC) temperature sensor (2) Temperature sensor after DOC (3) Oxygen sensor