Detroit fault code SPN 3058 FMI 9 is the TruckFaultCodes.com diagnostic sheet for the Exhaust Gas Recirculation (EGR) Actuator Slow Response condition on Detroit DD-series engines. This 3 pages reference lists the fault identification, monitored conditions where shown, and the step-by-step troubleshooting the technician follows in the shop.
Official document details
| Brand | Detroit |
|---|---|
| Model coverage | Detroit DD Series (EPA 2007-Current) |
| System / Group | DD Series (EPA 2007-Current) / DTCs |
| Publication no. | Not printed; TruckFaultCodes.com reference |
| Year / Revision | 2017 |
| Pages | 3 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- Fault code identification (SPN 3058 / FMI 9)
- Checking voltage codes
- SRA3 status monitoring
- Actuator pull rod and part-number check
- EGR butterfly travel and code clear
SPN 3058 FMI 9 troubleshooting steps
The three-page routine first troubleshoots any SPN 168 voltage codes, then monitors the SRA3 status code with the diesel diagnostic tool. The EGR valve actuator pull rod ball sockets are inspected for free movement and correct part number (A4711401646 or higher on DD13, A4721400646 or higher on DD15 and DD16). The technician sweeps the actuator through its travel to check for binding, watches for the SRA3 learn values, and moves the EGR butterfly stop to stop. After clearing codes, SRA3 status is confirmed at 0 or OK before releasing the vehicle.
Applicable truck models
This sheet applies to Detroit DD-series diesel engines (the DD13, DD15 and DD16 family) built under the EPA 2007-Current emissions platform, in its GHG14 calibration. Engine and emissions specifications should always be confirmed against the vehicle build; full engine information is published on the Detroit Diesel official site.
Who needs this SPN 3058 FMI 9 manual
Technicians diagnosing a sluggish EGR actuator use this sheet to distinguish a binding valve or worn pull rod from an actuator that only needs a relearn. It is a quick bench reference rather than a full workshop manual, so the named removal steps still route back to Power Service Literature and, where escalation is needed, to the Detroit Customer Support Center.
The full PDF is available in the DiagTechPro manuals library; a free account is required to download it.
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