SPN 4752 FMI 15 is the Detroit DD Series (EPA 2007–Current) diagnostic trouble code that Detroit documents as “Exhaust Gas Recirculation (EGR) Cooler Performance Monitor”. This 2-page GHG14 fault-code sheet documents the monitored intake-manifold-temperature parameter and enabling conditions, the dash-lamp indication and engine reaction, and the ordered troubleshooting steps used to confirm and clear the condition. The monitor watches the intake manifold temperature sensor under defined enabling conditions and illuminates the MIL, and the procedure distinguishes a temperature-sensor fault from a fouled or leaking EGR cooler on GHG14 engines.
SPN 4752 FMI 15 document details
| Brand | Detroit (Detroit Diesel) |
|---|---|
| Model coverage | Detroit DD13, DD15 and DD16 engines |
| System / group | DD Series (EPA 2007-Current) / DTCs |
| Publication / source | Detroit Power Service Literature (TruckFaultCodes reference, 2017) |
| Emissions family | GHG14 |
| Pages | 2 |
| File size | 0.23 MB |
| Format | |
| Language | English |
Document table of contents
- Fault code description and enabling conditions
- Cooling system and fan operation check
- Intake manifold air temperature monitoring
- Intake manifold temperature sensor connector inspection
- EGR system external-leak inspection
- EGR hot pipe, crossover tube and mixer pipe removal
- EGR cooler cleaning or replacement on DD13, DD15 and DD16
Applicable truck models
This fault-code procedure applies to trucks powered by the Detroit DD13, DD15 and DD16 engines on the DD Series (EPA 2007–Current) platform. The technician first checks for cooling-system or fan concerns, then reads the intake manifold air temperature against 93°C, inspects the sensor connector for pin damage, checks the EGR system for external leakage, and removes the hot pipe, crossover tube and mixer pipe to look for excessive build-up before cleaning the piping and replacing the EGR cooler. Always confirm the engine family and GHG14 emissions level against the vehicle, and cross-check the latest procedure in the Detroit Power Service Literature on the official Detroit website.
Who needs this SPN 4752 FMI 15 manual
Diesel technicians, fleet maintenance teams and workshop owners diagnosing an EGR cooler performance fault or an emissions MIL on a GHG14 DD engine on Detroit DD Series trucks use this sheet to work the fault in order instead of guessing. Separate DD13 and DD15/DD16 cooler removal references keep the repair specific to the engine being serviced.
The complete 2-page PDF is available in the DiagTechPro manuals library; a free account is required to download it.
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