This Cummins 3141 fault code document is a troubleshooting PDF for the engine air shutoff circuit on CM2250 engines. It explains the voltage-below-normal or short-to-low-source condition, the effect on the engine air shutoff valve, and the guided checks used with INSITE™ electronic service tool. The file is useful when Fault Code 3141 is active or when a repair needs validation after circuit work.
Official Cummins 3141 fault code document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250; also references ISX11.9 CM2250, ISC8.3 and ISL9 CM2250, ISX15 CM2250, and GX CM2250 in associated procedures |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; Engine Air Shutoff Sensor Circuit |
| Publication no. | Not shown in the extract; associated bulletin numbers include 4022254, 4022257, 4022250, and 2883445 |
| Year/Revision | Year unknown; last modified 11-Jun-2010 and 04-Jan-2011 |
| Pages | 12 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Overview
- Circuit Description
- Component Location
- Conditions for Running the Diagnostics
- Conditions for Setting the Fault Codes
- Action Taken When the Fault Code is Active
- Conditions for Clearing the Fault Code
- Shop Talk
- Associated Procedures
- Troubleshooting Steps
- Guided Step 1 – Check the fault codes.
- Guided Step 2 – Check the engine air shutoff solenoid and circuit
- Guided Step 3 – Check the ECM and engine harness.
- Guided Step 4 – Check ECM calibration and clear fault codes.
Applicable truck models
This document applies to Cummins CM2250 engine diagnostics where the OEM-installed engine air shutoff valve is used to stop airflow to the engine intake. The extract identifies ISB6.7 CM2250 coverage and also lists associated ECM and calibration procedures for ISC8.3 and ISL9 CM2250, ISX15 CM2250, GX CM2250, and ISX11.9 CM2250 engines. Component location and some connector details can vary by OEM, so the procedure repeatedly directs the technician to the OEM service manual and wiring diagrams. For manufacturer information, visit the Cummins official website.
Who needs this Cummins 3141 fault code manual
Workshop technicians, diesel mechanics, and fleet service owners need this 3141 fault code manual when diagnosing an amber CHECK ENGINE light or MIL caused by low signal voltage at the engine air shutoff circuit. It is especially relevant for testing the solenoid, OEM harness, ECM connector pins, pin-to-ground shorts, pin-to-pin shorts, calibration revision, and final fault clearing with INSITE™.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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