The Detroit DD EGR sensor fault-code sheet is a Detroit DD Series (EPA 2007-Current) troubleshooting document for an exhaust gas recirculation (EGR) 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 DD EGR sensor 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
- Description: monitored parameter and enabling conditions
- Dash lamps, engine reaction and verification
- Troubleshooting steps
- Venturi pipe and EGR valve inspection
- MCM2 120-pin connector resistance checks
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 description block lists the monitored parameter as the EGR delta P sensor, an idle enabling condition below 900 rpm with coolant above 65 C, a once-per-drive-cycle monitor, and a 25% derate with the MIL and CEL lit. The steps read delta P voltage on pin 109, inspect the venturi pipe ports for build-up, check the EGR valve butterfly, and measure resistance between the sensor pins and at the MCM2 120-pin connector to isolate shorts on pins 103, 109 and 117. Detroit Power Service Literature is referenced for the venturi-pipe cleaning and valve removal steps.
Who needs this Detroit DD EGR sensor 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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