The 3250 FMI 0 GHG14 fault code file is a Detroit GHG14 diagnostic sheet covering a Diesel Oxidation Catalyst (DOC) outlet temperature very high condition on DD Series engines. Compiled by TruckFaultCodes.com (© 2017) from Detroit Power Service Literature, this 4-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 |
| System / group | DD Series (EPA 2007-Current) — DTCs |
| Diagnostic code | DTC 3250-0, emission level GHG14 |
| Fault name | DOC Outlet Temperature Very High |
| Pages | 4 |
| File size | 0.3 MB |
| Format | |
| Source | TruckFaultCodes.com, from Detroit Power Service Literature |
| Language | English |
3250 FMI 0 GHG14 fault summary
It confirms a very-high DOC outlet temperature on GHG14 hardware, checks the sensor and ACM2.1 wiring, runs an Idle Speed Balance Test and inspects the DPF before a parked regeneration and ash reset. 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 inlet versus outlet temperature comparison
- DOC outlet sensor and ACM2.1 harness inspection
- Idle Speed Balance Test
- Removing the GHG14 1-BOX or Two-Box (2V2) device
- Contamination checks, parked regen and ash reset
Applicable truck models and engines
This procedure applies to Detroit DD13, DD15 and DD16 engines in the DD Series (EPA 2007-Current) family. The GHG14 procedure is built around the Aftertreatment Control Module (ACM2.1). For engine specifications and dealer support, see the official Detroit engine support site.
Who needs this 3250 FMI 0 GHG14 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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