The DPF hydrocarbon absorption code document is a Detroit fault code reference that explains a very high hydrocarbon (HC) absorption level in the Diesel Particulate Filter (DPF), published for DD Series engines under SPN 5443 FMI 0 (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 0 |
| Emissions family | GHG14 |
| Pages | 2 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- Fault code identification — SPN 5443 / FMI 0
- Reference TS letters 09TS6 and 10TS21
- Connecting the diesel diagnostic tool
- Performing a parked regeneration
- Clearing fault codes and verifying repairs
Troubleshooting the DPF hydrocarbon absorption code code
The technician connects a diesel diagnostic tool, starts the engine and performs a parked regeneration using the diesel diagnostic tool as described in the Power Service Literature. When the regeneration is complete, all fault codes are cleared and repairs are verified. Technical service letters 09TS6 for EPA07 and 10TS21 for EPA10 are cited for background on hydrocarbon absorption in the Diesel 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 hydrocarbon absorption code manual
Heavy-duty truck technicians, fleet maintenance staff and workshop owners diagnosing SPN 5443 FMI 0 with a diesel diagnostic tool will use this sheet to follow the correct steps rather than replacing parts by guesswork.
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