The Cummins fault code 2741 troubleshooting document is a 2-page factory diagnostic reference for the Cummins ISM and ISX CM871 (2007-09) engine platform, covering fuel shutoff valve 1 swapped (SPN 3482, FMI 31). This fault code sets when the aftertreatment fuel shutoff valve 1 condition exists because its engine-harness connector and the aftertreatment fuel drain valve connector are swapped. This page summarises what the manual contains so a technician can confirm it matches the code before downloading.
Official document details
| Brand | Cummins |
| Model coverage | ISM & ISX CM871 (2007-09) |
| System / group | ISM CM871 (2007-09) / DTCs |
| Circuit | ISX and ISM Aftertreatment Fuel Shutoff Valve |
| Fault identifiers | SPN 3482 · Lamp AMBER · FMI 31 |
| Source | TruckFaultCodes.com (© 2017) |
| Pages | 2 |
| File size | 0.1 MB |
| Format | |
| Language | English |
Cummins fault code 2741 overview
This fault code sets when the aftertreatment fuel shutoff valve 1 condition exists because its engine-harness connector and the aftertreatment fuel drain valve connector are swapped. The shutoff valve enables and disables fuel supply to the aftertreatment system while the drain valve relieves trapped fuel. Verify the ECM calibration is correct.
The document lists possible causes including:
- The engine-harness connectors on the fuel shutoff valve 1 and fuel drain valve are swapped
- Corrected by reversing the wiring-harness connectors on the aftertreatment fuel shutoff valves
Document table of contents
- Description
- Shop Talk
- Component Location
- Troubleshooting Steps
Applicable truck models covered
This procedure applies to Cummins ISM and ISX engines built on the CM871 (2007-09) electronic control platform, as fitted by truck makers using this Cummins driveline. The aftertreatment fuel shutoff valve 1 and the fuel drain valve are in the aftertreatment shutoff valve assembly. For wiring, connector, and CPL detail, refer to the Cummins official engine support site or the OEM service manual.
Who needs this Cummins fault code 2741 manual
Fleet technicians and workshop owners diagnosing swapped aftertreatment valve connectors on ISM or ISX CM871 engines use this reference to follow the factory step order instead of guessing at the aftertreatment fuel system circuit. The full PDF is available in the DiagTechPro manuals library, and a free account is required to download.
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