The SPN 100 FMI 3 document is a Detroit DD Series diagnostic trouble code guide covering the engine oil pressure (EOP) sensor circuit failed high condition and its step-by-step troubleshooting. This 2-page PDF is compiled from the TruckFaultCodes.com Detroit fault codes reference (© 2017) for the DD Series (EPA 2007-Current) / DTCs set. It is written for workshop diagnostics rather than general reading.
Official document details
| Brand | Detroit |
| Model coverage | Detroit DD Series (EPA 2007-Current); Detroit Series 60 (DDEC VI – EPA 2007) |
| System / Group | DD Series (EPA 2007-Current) / DTCs |
| Diagnostic trouble code | SPN 100/FMI 3 — Engine Oil Pressure Sensor Circuit Failed High |
| Publication no. | Not stated (TruckFaultCodes.com DTC reference) |
| Year / Revision | © 2017 |
| Pages | 2 |
| File size | 0.3 MB |
| Format | |
| Language | English |
SPN 100 FMI 3 document sections
- Fault code identification: SPN 100/FMI 3 — EOP sensor circuit failed high
- Checking for multiple codes (SPN 94/FMI 3 and SPN 4407/FMI 3)
- Disconnecting the engine oil pressure (EOP) sensor
- Voltage measurements at the EOP sensor harness connector pins 2 and 3
- Repairing shorts and opens to the MCM 120-pin connector (pin 82, pin 105)
Applicable truck models covered
The SPN 100 FMI 3 fault applies to the models below. This procedure covers Detroit DD Series (EPA 2007-Current); Detroit Series 60 (DDEC VI – EPA 2007) engines equipped with the Motor Control Module. The steps reference the systems named in the extract only — EOP sensor components, harness connectors and, where present, the MCM 120-pin connector. Confirm engine and emissions configuration against the vehicle build before ordering parts; verify current procedures on the Detroit Diesel official site.
Who needs this 100 FMI 3 manual
This reference suits Detroit-certified technicians and fleet workshop owners diagnosing engine oil pressure and oil level faults on DD Series engines. Every troubleshooting step and decision branch from the original PDF is preserved so the on-vehicle diagnosis can be followed in sequence. Use it alongside a Detroit-compatible scan tool such as DDDL or DDRS.
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