Cummins fault code 1924 is documented on this DiagTechPro library page for Cummins ISM CM871 (2007-09) engines, where it flags the Aftertreatment Fuel Shutoff Valve 1 Circuit – Voltage Below Normal, or Shorted to Low Source condition (PID S334, SPN 3482, FMI 4/4, Amber lamp). This 6-page PDF reproduces the manufacturer description, shop talk, component location and step-by-step troubleshooting so technicians can confirm and clear the code.
Cummins fault code 1924 overview
Cummins identifies this code as “Aftertreatment Fuel Shutoff Valve 1 Circuit – Voltage Below Normal, or Shorted to Low Source” on the Aftertreatment Fuel Shutoff Valve 1 Circuit. The aftertreatment fuel shutoff valve is used to disable the fuel supply to the aftertreatment system. The included troubleshooting tree guides technicians through key-on checks, wiring and connector inspection, and supply, return and signal circuit measurements taken at both the sensor and the ECM connector to isolate the failure.
Official document details
| Brand | Cummins |
| Model coverage | Cummins ISM CM871 (2007-09); Cummins ISX CM871 (2007-09) |
| System / Group | Aftertreatment Fuel Shutoff Valve 1 Circuit — ISM CM871 fault codes |
| Fault code | 1924 (SPN 3482, FMI 4/4) |
| PID | S334 |
| Warning lamp | Amber |
| Source | TruckFaultCodes.com Cummins fault code reference (© 2017) |
| Pages | 6 |
| File size | 0.4 MB |
| Format | |
| Language | English |
Document table of contents
- Fault code identification (PID, SPN, FMI, lamp)
- Description
- Shop Talk
- Component Location
- Troubleshooting Steps
Applicable truck models and engines
This document applies to Cummins ISM CM871 (2007-09); Cummins ISX CM871 (2007-09) equipped diesel engines that log Fault Code 1924. Always confirm engine calibration and use a Cummins diagnostic tool such as INSITE to read live data before replacing parts. Full specifications are published on the Cummins official website.
Who needs this Cummins fault code 1924 manual
Heavy-duty truck technicians, fleet workshops and owner-operators diagnosing an electronic control module warning on ISM CM871 engines use this sheet to verify the fault before parts are replaced.
The full PDF is available in the DiagTechPro manuals library; a free account is required to download.
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