The Detroit EGR pressure high fault-code sheet is a Detroit DD Series (EPA 2007-Current) troubleshooting document for an exhaust gas recirculation pressure signal that reads too high at low speeds and loads. 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 pressure high 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 | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Fault code identification — SPN 411 / FMI 0
- Troubleshooting steps
- Delivery pipe delta P port inspection
- EGR valve butterfly check
- MCM 120-pin connector resistance measurements
- Short-circuit repair and verification
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 0 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 addresses the EGR delta P sensor reading too high at low speeds and loads. It reads delta P voltage on pin 109, inspects the delivery pipe delta P ports for build-up, checks the harness connector for damage, inspects the EGR valve for a broken butterfly, then disconnects the MCM 120-pin connector to measure sensor resistances — pins 1-2 and 2-3 above 5 ohms and pins 1 and 3 to ground above 3 ohms — and repairs shorts on pins 103, 109 and 117 using Detroit Power Service Literature.
Who needs this Detroit EGR pressure high manual
This troubleshooting sheet suits Detroit-certified technicians and independent heavy-duty workshops that read SPN 411/FMI 0 on a scan tool and want the factory decision tree, pin references and component checks before replacing parts.
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