The 3250 FMI 0 EPA07 fault code file is a Detroit EPA07 diagnostic sheet covering a Diesel Oxidation Catalyst (DOC) outlet temperature high condition on DD Series engines. Compiled by TruckFaultCodes.com (© 2017) from Detroit Power Service Literature, this 6-page PDF gives technicians the exact troubleshooting order for DTC 3250-0. 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, Series 60 |
| System / group | DD Series (EPA 2007-Current) — DTCs |
| Diagnostic code | DTC 3250-0, emission level EPA07 |
| Fault name | DOC Outlet Temperature High |
| Pages | 6 |
| File size | 0.4 MB |
| Format | |
| Source | TruckFaultCodes.com, from Detroit Power Service Literature |
| Language | English |
3250 FMI 0 EPA07 fault summary
It confirms a high DOC outlet temperature, runs an Automatic Cylinder Cutout or Idle Speed Balance test, inspects the DPF for contamination and, where needed, replaces the DOC and DPF. 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.
- Monitoring DOC outlet temperature against 760C / 1400F
- DOC outlet sensor and MCM harness inspection
- Automatic Cylinder Cutout Service Routine for Series 60
- Idle Speed Balance Test
- ATD removal and contamination inspection
- DOC and DPF replacement with a parked regen
Applicable truck models and engines
This procedure applies to Detroit DD13, DD15 and DD16 engines in the DD Series (EPA 2007-Current) family, and legacy Series 60 engines. 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 3250 FMI 0 EPA07 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.
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