The Detroit DPF pressure sensor fault sheet is the official Detroit DD Series diagnostic for a DPF pressure reading out of range high, stored under SPN 3251 FMI 16 for GHG14 calibrations. It records the monitored parameter DPF pressure, exactly as published by TruckFaultCodes.com (© 2017).
Official document details
| Brand | Detroit |
|---|---|
| Model coverage | Detroit DD Series diesel engines (EPA 2007-current) |
| System / Group | DD Series (EPA 2007-Current) / DTCs |
| Fault code | SPN 3251 / FMI 16 |
| Fault condition | Diesel Particulate Filter (DPF) Pressure – Out of Range High |
| Monitored parameter | DPF pressure |
| Emissions calibration | GHG14 |
| Source / Publisher | TruckFaultCodes.com |
| Year / Revision | 2017 |
| Pages | 3 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- Fault code identification: SPN 3251, FMI 16
- Description and monitored parameter
- Typical enabling conditions
- Troubleshooting steps
- Component inspection and repair verification
Detroit DPF pressure sensor troubleshooting steps
The sheet has the technician confirm the code, inspect the DPF differential pressure sensor, ports and hoses for blockage or a high-side fault, and compare the reading against the diesel diagnostic tool before replacing the sensor or repairing the wiring.
Applicable truck models
This code sheet applies to trucks powered by Detroit DD Series diesel engines built to the GHG14 emissions calibration; always match the SPN 3251 FMI 16 listing to the vehicle’s own engine family before repair. Confirm the emissions family on the vehicle emissions label, because aftertreatment and dosing hardware differs between the EPA07, EPA10 and GHG14 builds and a mismatched procedure can send you to the wrong component. For engine coverage and dealer service information, see the Detroit Diesel official website.
Who needs this Detroit DPF pressure sensor manual
Fleet technicians and independent workshops that service Detroit DD Series engines use this DPF pressure sensor reference to confirm the code, its enabling conditions and the correct repair before replacing parts. It is written for the mechanic making the repair decision, not the driver, and pairs with the wiring diagrams and component removal procedures Detroit publishes in Power Service Literature.
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