# Aftertreatment/Diesel Particulate Filter

- [dspttftatvrtitddtsstftatvj1939 - SPN 3712](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/aftertreatment-diesel-particulate-filter/dspttftatvrtitddtsstftatvj1939-spn-3712.md): Diesel Particulate Filter Active Regeneration Inhibited Due to System Fault Active
- [attttdspttftpssvrtsttsj1939 - SPN 3699](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/aftertreatment-diesel-particulate-filter/attttdspttftpssvrtsttsj1939-spn-3699.md): Indicates the state of diesel particulate filter passive regeneration.
- [aftrtrtmntsroprtrindmntsvrtj1939 - SPN 5246](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/aftertreatment-diesel-particulate-filter/aftrtrtmntsroprtrindmntsvrtj1939-spn-5246.md): Aftertreatment SCR Operator Inducement Severity
- [aftertreatment1outletnox1j1939 - SPN 3226](/dimo-explorer/field-descriptions-in-detail/j1939-heavy-truck/aftertreatment-diesel-particulate-filter/aftertreatment1outletnox1j1939-spn-3226.md): The raw estimate for the amount of combined NO and NO2 in the exhaust exiting the aftertreatment system measured by a NOx sensor at the aftertreatment outlet in exhaust bank 1.
