The SPN 3250 FMI 10 fault code file is a Detroit EPA07 diagnostic sheet covering a Diesel Oxidation Catalyst (DOC) outlet temperature sensor stuck fault on DD Series engines. Compiled by TruckFaultCodes.com (© 2017) from Detroit Power Service Literature, this 1-page PDF gives technicians the exact troubleshooting order for DTC 3250-10. It is a field reference, not a substitute for the full factory manuals.
Official document details
| Brand | Detroit (Detroit Diesel) |
|---|---|
| Model coverage | DD13, DD15, DD16 |
| System / group | DD Series (EPA 2007-Current) — DTCs |
| Diagnostic code | DTC 3250-10, emission level EPA07 |
| Fault name | DOC Outlet Temperature Sensor Stuck |
| Pages | 1 |
| File size | 0.2 MB |
| Format | |
| Source | TruckFaultCodes.com, from Detroit Power Service Literature |
| Language | English |
SPN 3250 FMI 10 fault summary
This single-page sheet is a quick connector check: inspect the DOC outlet temperature sensor and the wiring upstream to the Motor Control Module, then repair or replace the sensor. Every step is laid out as a Yes/No decision branch, so you can follow the same path a Detroit dealer technician would without guessing.
- Disconnecting the DOC outlet temperature sensor
- Inspecting the connector for bent, spread or corroded pins
- Checking the ATD 10-pin, VIH 31-pin and MCM 120-pin connectors
- Repairing the wiring or replacing the sensor
Applicable truck models and engines
This procedure applies to Detroit DD13, DD15 and DD16 engines in the DD Series (EPA 2007-Current) family. The EPA07 procedure is built around the Motor Control Module (MCM) and its 120-pin connector. For engine specifications and dealer support, see the official Detroit engine support site.
Who needs this SPN 3250 FMI 10 manual
Fleet technicians, mobile diesel mechanics and DD Series owners diagnosing this code with a diesel diagnostic tool such as DDDL or DDRS will find the exact step order, pin numbers and pass/fail limits they need. Keep it beside the truck during the repair.
The complete 1-page PDF is available in the DiagTechPro manuals library; a free account is required to download it.
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