SPN 110 FMI 9 is a Detroit™ CAN-network diagnostic fault code, and this 1-page Detroit DD Series PDF documents the “Temperature Signal Not Available via Controller Area Network” condition in full. This code reports that a temperature signal is not available over the Controller Area Network. Diagnosis first rules out recent reprogramming, then power-cycles the modules and, if the fault stays active, follows the SPN 625/FMI 9 powertrain CAN procedure. The summary below sets out the official causes, tools and troubleshooting order so a technician can verify the code before downloading the complete manual.
Official document details
| Brand | Detroit |
| Model coverage | DD Series (EPA 2007-Current) |
| System / Group | DD Series (EPA 2007-Current) / DTCs |
| Publication no. | Not printed on sheet (Detroit™ via TruckFaultCodes.com, © 2017) |
| Year / Revision | 2017 |
| Pages | 1 |
| File size | 0.2 MB |
| Format | |
| Language | English |
SPN 110 FMI 9 document contents
- Fault code identification (SPN and FMI)
- Recent-reprogramming check
- Module power-down and restart
- PT CAN troubleshooting via SPN 625/FMI 9
Applicable truck models
The procedure applies to Detroit DD Series diesel engines across all model years communicating on the powertrain Controller Area Network. Only the diesel diagnostic tool is required. For factory service data, wiring diagrams and bulletins beyond this fault-code sheet, consult the official Detroit Diesel support site.
Who needs this SPN 110 FMI 9 manual
Technicians chasing a missing-temperature or network complaint on a Detroit engine need this sheet to decide between a reprogramming artefact and a genuine CAN fault. It points directly to the correct follow-on procedure.
The routine has you confirm whether the ACM, MCM or CPC was recently reprogrammed, power the modules down for five minutes and restart, then, if faults remain active, follow the full SPN 625/FMI 9 powertrain CAN troubleshooting procedure.
The full 1-page PDF is available in the DiagTechPro manuals library; a free account is required to download it. Every document in the library is indexed by suspect parameter number and failure mode identifier, so you can cross-reference related Detroit DD Series fault codes without leaving the page.
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