SPN 2630 FMI 16 is the Detroit DD-Series diagnostic fault code document for the very high charge air and intake manifold temperatures detected by the MCM event, published on TruckFaultCodes.com (copyright 2017) and archived as a 1-page PDF in the DiagTechPro library. The document explains that the Motor Control Module (MCM) has detected very high charge air and intake manifold temperatures, and lists the operating conditions that most often trigger it.
SPN 2630 FMI 16 document details
| Brand | Detroit |
| Model coverage | Detroit DD-Series (DD13, DD15 and DD16), EPA 2007 and later |
| System / group | DD Series (EPA 2007-Current) / DTCs |
| Fault code (SPN) | 2630 |
| Failure mode (FMI) | 16 |
| Emissions calibration | EPA07 / GHG14 |
| Source | TruckFaultCodes.com (copyright 2017) |
| Pages | 1 |
| File size | 0.13 MB |
| Format | |
| Language | English |
The page records the official identifiers so a technician can confirm the exact code and calibration against the diesel diagnostic tool before starting any repair.
Document table of contents
- Fault code identification (SPN 2630 / FMI 16)
- MCM detects very high charge air and intake temperatures
- Possible causes (grade climb, fan operation, winter front)
- OEM charge air cooler leak and performance test reference
This single-page description lists the common causes rather than a numbered test sequence: low vehicle speed combined with high engine load such as a steep grade climb, cooling fan operation, and a winter front fitted in high ambient temperatures. If none of those operating conditions applied when the fault set, the document directs the technician to Original Equipment Manufacturer literature for charge air cooler leak and performance tests, so the physical cooling path is verified rather than a sensor being replaced blindly.
Applicable truck models
This document applies to Detroit DD-Series diesel engines in the EPA 2007-and-later range, typically the DD13, DD15 and DD16 as covered by the EPA07 / GHG14 calibration shown on the file. Confirm the engine calibration and connector layout for your chassis on the official Detroit engine site before ordering parts.
Who needs this SPN 2630 FMI 16 manual
Fleet and workshop technicians reviewing an over-temperature event on an EPA07 Detroit DD-Series engine will use this page to separate normal high-load operation from a genuine cooling-system fault.
The complete 1-page PDF is available in the DiagTechPro manuals library, where a free account is required to download it.
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