SPN 3511 FMI 3 is documented in this Detroit DD Series fault code reference PDF, which covers the 3V Sensor Supply Bank 1 Circuit Failed High condition on Detroit engines. The 1-page document lists the fault description, the step-by-step troubleshooting sequence and the connector measurements a technician uses to confirm the repair.
Official document details
| Brand | Detroit |
|---|---|
| Model coverage | Detroit DD Series (EPA 2007-Current) engines on the EPA07 platform using the MCM |
| System / group | DD Series (EPA 2007-Current) / DTCs |
| Diagnostic code | FMI 3 / SPN 3511 |
| Year / revision | Source dated 2017 |
| Pages | 1 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Fault code identification: SPN 3511, FMI 3
- 3V sensor supply bank 1 failed high
- Short to power description
- Harness inspection and repair
- Repair verification
Applicable truck models and engines
This fault code applies to Detroit DD Series (EPA 2007-Current) engines on the EPA07 platform using the MCM, and the DiagTechPro library also files it under the Series 60 (DDEC VI, EPA 2007) DTC set. The diagnostic references the Motor Control Module (MCM) used on these Detroit powertrains. See the manufacturer’s Detroit official website for current engine specifications and dealer support.
SPN 3511 FMI 3 troubleshooting overview
This concise EPA07 reference states that the Motor Control Module (MCM) has detected a short to power, above 3.2 volts, on one of the MCM pins. The prescribed action is to inspect the harness and repair it as necessary, then verify the repair. By naming the failure mode and threshold, the page focuses the technician’s attention on the sensor supply wiring rather than on component replacement, which is appropriate for a circuit-level short to power fault.
Who needs this SPN 3511 FMI 3 manual
Detroit-certified technicians, independent truck repair shops and fleet maintenance teams will use this reference to follow the factory diagnostic sequence with a diesel diagnostic tool before replacing any control module or sensor.
The full PDF is available in the DiagTechPro manuals library; a free account is required to download it, alongside the related Detroit Power Service Literature.
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