The DPF HC absorption warning document is a Detroit fault code reference that explains a Diesel Particulate Filter (DPF) hydrocarbon (HC) absorption warning, published for DD Series engines under SPN 5443 FMI 15 (GHG14). It gives workshop technicians the diagnostic sequence used to confirm the condition and return the truck to service, sourced from Detroit Power Service Literature.
Official document details
| Brand | Detroit (Detroit Diesel) |
| Model coverage | DD Series (EPA 2007-Current) and Series 60 (DDEC VI) |
| System / Group | Diagnostic Trouble Codes (DTCs) |
| Fault code | SPN 5443 / FMI 15 |
| Emissions family | GHG14 |
| Pages | 2 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- Fault code identification — SPN 5443 / FMI 15
- Reference TS letters 09TS6 and 10TS21
- Performing a parked regeneration
- Clearing fault codes after regeneration
Troubleshooting the DPF HC absorption warning code
This two-step routine has the technician perform a parked regeneration with the diesel diagnostic tool as described in the Power Service Literature, then clear the fault codes once the regeneration is complete. The document references technical service letters 09TS6 for EPA07 and 10TS21 for EPA10 for further detail on hydrocarbon absorption in the particulate filter.
Applicable truck models and engines
This diagnostic sheet applies to Detroit DD Series diesel engines built to EPA 2007 through current emissions standards, and the covered fault also appears on Series 60 (DDEC VI) applications listed in the source. Confirm the exact engine family and calibration against the vehicle before making repairs, and cross-check the specifications on the official Demand Detroit website.
Who needs this HC absorption warning manual
Heavy-duty truck technicians, fleet maintenance staff and workshop owners diagnosing SPN 5443 FMI 15 with a diesel diagnostic tool will use this sheet to follow the correct steps rather than replacing parts by guesswork.
The full PDF is available in the DiagTechPro manuals library; a free account is required to download it.
Related manuals library
