The Detroit EGR sensor short fault-code sheet is a Detroit DD Series (EPA 2007-Current) troubleshooting document for an exhaust gas recirculation sensor signal that is shorted to ground. 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 EGR sensor short document details
| Brand | Detroit |
| Model coverage | Detroit DD13, DD15 and DD16 diesel engines built from EPA 2007 onward; the same DTC logic is cross-referenced on 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 | 4 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- Fault code identification — SPN 411 / FMI 4
- Troubleshooting steps
- Delivery pipe delta P port inspection
- MCM 120-pin connector resistance checks
- Pin-to-ground short isolation
- Detroit Customer Support escalation
Applicable truck models
Detroit DD13, DD15 and DD16 diesel engines built from EPA 2007 onward; the same DTC logic is cross-referenced on Series 60 DDEC VI applications. Fault code SPN 411 / FMI 4 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
The sheet isolates an EGR delta P sensor short to ground. It reads delta P voltage on pin 109, removes the sensor from the mounting pad, inspects the delivery pipe ports, then disconnects the MCM 120-pin connector and measures resistance between sensor pins 1-2 and 2-3 (greater than 5 ohms) and from pins 1 and 3 to ground (greater than 3 ohms) to find shorts on pins 103, 109 and 117. Unresolved cases direct the technician to the Detroit Customer Support Center at 800-445-1980.
Who needs this Detroit EGR sensor short manual
This troubleshooting sheet suits Detroit-certified technicians and independent heavy-duty workshops that read SPN 411/FMI 4 on a scan tool and want the factory decision tree, pin references and component checks before replacing parts.
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