SPN 524287 FMI 1 identifies the Detroit DD Series fault “Evobus cruise control lever position signal indicates not plausible (out of range)” for engines on the GHG14 emissions platform. This fault-code sheet documents SPN 524287 / FMI 1 together with the diagnostic steps a technician follows with a diesel diagnostic tool.
Official document details
| Brand | Detroit (Detroit Diesel) |
| Model coverage | DD Series diesel engines (EPA 2007-Current) |
| System / Group | DTCs — fault code reference |
| Publication no. | TruckFaultCodes.com reference, 2017 |
| Year / Revision | GHG14 |
| Pages | 1 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Fault code identification
- Fault description
- Identify the cruise control lever signal
- Review out-of-range condition
- Reference OEM wiring schematic
- Module and OEM references
Applicable truck models covered
This fault-code sheet applies to Detroit DD Series diesel engines on the GHG14 emissions platform. It describes the evobus cruise control lever position signal indicates not plausible (out of range) condition reported under SPN 524287 / FMI 1. Detroit documentation notes that some CPC4 digital outputs share an SPN with Motor Control Module (MCM2.1) faults, so the diesel diagnostic tool makes the distinction. For official service resources, see Detroit’s official website.
Understanding SPN 524287 FMI 1
This sheet identifies the fault as “Evobus cruise control lever position signal indicates not plausible (out of range)”. Using a diesel diagnostic tool, the procedure first checks for related Common Powertrain Controller (CPC) battery-voltage codes and other active faults, then works through the documented steps. The description states the Evobus cruise control lever position signal is out of range, and the sheet directs the technician to OEM wiring schematics, noting CPC4 outputs can share an SPN with MCM2.1 faults.
Who needs the SPN 524287 FMI 1 sheet
Detroit diesel technicians, DD Series fleet workshops and mobile repair units use this fault-code sheet to read the condition correctly, follow the right diagnostic path with a diesel diagnostic tool, and reference Original Equipment Manufacturer literature for the matching wiring schematics before making a repair.
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