This Detroit CPC4 coolant fault reference documents fault code SPN 110/FMI 0 (Coolant Temperature Very High) for Detroit DD-series engines on the GHG14 platform. It reproduces the original TruckFaultCodes.com fault tree, from the first check through the final repair, so the code can be confirmed and worked in the exact order the factory intended. Each step lists the measured value or check and the pass or fail branch that follows, matching the layout used in the source document.
Detroit CPC4 coolant fault troubleshooting overview
This short GHG14 reference explains that the Common Powertrain Controller (CPC4) can share SPN 110 with Motor Control Module (MCM2.1) faults. It instructs the technician to use DDDL 7.08 SP2 to distinguish the two controllers and to follow the MCM2.1 SPN 110/FMI 0 procedure for the actual diagnosis. Follow the checks in sequence and verify the repair before clearing the code and releasing the vehicle.
Official document details
| Brand | Detroit |
| Model coverage | Detroit DD-series engines on the GHG14 platform |
| System / group | DTCs — coolant temperature (CPC4/MCM2.1) |
| Fault code | SPN 110/FMI 0 |
| Source publication | TruckFaultCodes.com (© 2017) |
| Pages | 1 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Fault code identification — SPN 110/FMI 0
- CPC4 versus MCM2.1 SPN overlap note
- DDDL 7.08 SP2 fault distinction
- Redirect to MCM2.1 SPN 110/FMI 0 troubleshooting
Applicable truck models
It applies to Detroit DD-series engines on the GHG14 emissions platform equipped with CPC4 and MCM2.1 controllers. Always cross-check the reading against any companion codes before condemning a component. For the official product and service literature, visit the Detroit Diesel website.
Who needs this Detroit CPC4 coolant fault manual
Technicians who pull SPN 110/FMI 0 on a GHG14 truck and must confirm whether the CPC4 or the MCM2.1 set the code before diagnosing. It is written for shop use as a quick, printable reference to keep beside a diesel diagnostic tool during the job.
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