DPF outlet pressure low (SPN 3610 FMI 4) is the Detroit DD Series diagnostic trouble code for a DPF outlet pressure sensor circuit failed low. This manual page sets out the official Detroit troubleshooting sequence, including the diesel diagnostic tool voltage service routine and the DPF outlet pressure signal (P_DPF_OUT), so a technician can confirm whether the fault is in the sensor, the wiring harness or the control module. It is written for workshops running the Detroit Diesel Diagnostic Link.
Official document details
| Brand | Detroit |
|---|---|
| Model coverage | DD Series (EPA 2007-Current) and Series 60 (DDEC VI – EPA 2007) |
| System / Group | DTCs / diagnostic trouble codes |
| Emission platform | EPA10 / GHG14 |
| Pages | 2 |
| File size | 0.2 MB |
| Format | |
| Language | English |
What the DPF outlet pressure low manual covers
The procedure in this manual walks through the following checks:
- Fault description for the DPF outlet pressure sensor circuit
- Checking for related codes such as SPN 3609
- Connecting the diesel diagnostic tool and the voltage service routine
- Monitoring the DPF outlet pressure signal (P_DPF_OUT)
- DPF outlet pressure sensor connector and pin inspection
- Harness continuity checks to the MCM / ACM connector
Applicable Detroit truck models
The procedure applies to Detroit DD Series engines on the EPA 2007-Current platform and to Series 60 engines with DDEC VI, as listed in the source document. Diagnosis uses the diesel diagnostic tool voltage service routine and the pin and harness checks between the DPF outlet pressure sensor and the MCM or ACM connector, referenced in Detroit Power Service Literature. For engine data and bulletins, consult the official Detroit Diesel support site.
Who needs this DPF outlet pressure low guide
Diesel technicians and aftertreatment specialists working on a Detroit DD Series engine need this outlet pressure low manual to isolate a DPF outlet pressure sensor fault to the sensor, its connector or the harness before replacing parts, using the recorded voltages as evidence.
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