The Cummins ISX code 3716 manual is a 8-page PDF that documents fault code 3716, the engine speed at idle fault reported as data valid but below normal operational range at a moderately severe level. It explains that the ECM continuously monitors idle speed and adjusts fuelling, and that this code is set when engine speed stays 50 rpm below governed idle for 30 seconds with PTO inactive. The procedure is credited to TruckFaultCodes.com and covers the circuit description, component location and full troubleshooting steps.
Official document details
| Brand | Cummins |
| Model coverage | Cummins ISX11.9 CM2250 and ISX12 CM2250 (2010-12) engines |
| System / group | ISX11.9 CM2250 (2010-12) / DTCs |
| Fault code | 3716 (SPN 188, FMI 18) |
| Warning lamp | Amber |
| Pages | 8 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Fault code 3716 description
- Circuit description and ECM operation
- Component location
- Shop talk and possible causes
- Step-by-step troubleshooting flow
Applicable truck models
This diagnostic applies to Cummins ISX11.9 CM2250 and ISX12 CM2250 (2010-12) engines. Engine speed is monitored by the crankshaft and camshaft position sensors. The reported condition is that the engine is not maintaining governed idle speed; there is no direct effect on performance. For engine data and authorised service, visit the Cummins official website.
Who needs this Cummins ISX code 3716 manual
Heavy-duty diesel technicians, fleet workshops and owner-operators reach for this manual when fault code 3716 is logged and the amber warning lamp is on. It helps a technician diagnose a rough or low idle complaint by pointing to fuelling, sensor and load factors that pull idle below the governed value.
Download the ISX code 3716 PDF
The complete procedure, wiring detail and step tables are available in the DiagTechPro manuals library; a free account is required to download the PDF. Keep it alongside the related ISX11.9 CM2250 fault-code sheets listed below.
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