The Detroit overspeed pre-warning code fault-code sheet is a Detroit DD Series (EPA 2007-Current) troubleshooting document for an engine-overspeed pre-warning shown on the instrument cluster. It reproduces the official fault identification, the monitored parameters or service notes printed on the document, and the recommended diagnostic actions a heavy-duty technician follows step by step.
Detroit overspeed pre-warning code document details
| Brand | Detroit |
| Model coverage | Detroit DD Series engines (DD13, DD15 and DD16) from EPA 2007-Current, with equivalent coverage noted for Series 60 (DDEC VI) applications. |
| System / Group | DD Series (EPA 2007-Current) / DTCs |
| Publication no. | Not printed on document; sourced from Detroit Power Service Literature |
| Year / Revision | © 2017 |
| Pages | 1 |
| File size | 0.1 MB |
| Format | |
| Language | English |
Document table of contents
- Fault code identification — SPN 190 / FMI 15
- Information code: operator warning
- Cause: engine speed during deceleration
- Recommended action and DDEC reports
Applicable truck models
Detroit DD Series engines (DD13, DD15 and DD16) from EPA 2007-Current, with equivalent coverage noted for Series 60 (DDEC VI) applications. Fault code SPN 190 / FMI 15 is diagnosed with a diesel diagnostic tool such as DDDL or DDRS. For factory procedures and the latest module software, see the Detroit Diesel official website.
Diagnostic steps and checks
This information-only code posts an instrument-cluster message warning the operator that engine speed is rising and that the service brakes should be applied to avoid engine or transmission damage, typically during a steep-grade deceleration. The code self-deletes on each ignition cycle; the technician questions the driver about operating conditions, obtains the DDEC reports, and contacts the Detroit Customer Support Center at 800-445-1980 for further instructions.
Who needs this Detroit overspeed pre-warning code manual
This troubleshooting sheet suits Detroit-certified technicians and independent heavy-duty workshops that read SPN 190/FMI 15 on a scan tool and want the factory decision tree, pin references and component checks before replacing parts.
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