This Cummins M11 code 441 sheet documents the unswitched battery supply circuit fault (PID P168, SPN 168, FMI 1, SRT 00-614) on the CELECT Plus engine. It is a 5-page yellow-lamp troubleshooting chart focused on low battery supply voltage.
Official document details
| Brand | Cummins |
|---|---|
| Model coverage | M11 CELECT Plus (1995-98) |
| System / group | Unswitched Battery Supply Circuit |
| Fault code | 441 |
| PID / SPN | P168 / SPN 168 |
| FMI | 1 |
| Diagnostic lamp | Yellow |
| SRT | 00-614 |
| Pages | 5 |
| File size | 0.3 MB |
| Format | |
| Language | English |
| Source | Cummins fault code reference (TruckFaultCodes.com, 2017) |
Document table of contents
- Circuit description
- Component location
- Shop talk diagnostic notes
- Step-by-step troubleshooting
- Fault verification and clearing codes
Cummins M11 code 441 diagnosis
The ECM receives unswitched battery input through the actuator harness, protected by two in-line 15 Amp fuses that prevent the engine harness from overheating, with the battery return wires connected directly to the negative battery post. Shop talk stresses that the ECM unswitched battery supply must come directly from the battery and not from the starter. Troubleshooting opens by inspecting the battery cable connections for corrosion and loose terminals; damaged connections are repaired, tightened, and cleaned against the OEM manual before the technician moves deeper into the harness and connector checks.
Applicable truck models
It applies to the Cummins M11 CELECT Plus (1995-98) engine and its actuator harness; battery location varies by builder. Verify wiring on the official Cummins website.
Who needs this M11 code 441 manual
Technicians tracing low ECM supply voltage, corroded battery terminals, or incorrect starter-sourced power on M11 CELECT Plus trucks use this sequence.
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Applies to these truck models
This is the manufacturer document shared across 2 model families. It applies to:
- Cummins DTCs
- Cummins M11 CELECT Plus (1995-98)
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