This Cummins 2357 troubleshooting manual covers Fault Code 2357 for the EGR Valve Control Circuit on CM2150 engines. It explains the circuit description, fault conditions, guided checks, EGR valve inspection, INSITE™ electronic service tool use, and aftertreatment follow-up after repair.
Official Cummins 2357 troubleshooting document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2150 (2007-09); extract also references ISB, ISC, and ISL CM2150 procedures |
| System/Group | DTCs; ISB, ISC, and ISL – EGR Valve Circuit |
| Publication no. | Not shown in the file extract |
| Year/Revision | Last Modified: 20-Jul-2010 |
| Pages | 9 |
| 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 EGR valve circuit.
- Guided Step 3 – Check the EGR valve operation.
- Guided Step 4 – Clear the fault code.
Applicable truck models
This file applies to Cummins ISB6.7 CM2150 (2007-09) diagnostic coverage and references related ISB, ISC, and ISL CM2150 service manual procedures. The fault described is Fault Code 2357, PID S146, SPN 2791, FMI 7/7, where the EGR motor has exceeded the duty cycle limit and indicates a stuck open EGR valve. The extract states that EGR valve location can vary by engine application, so component location should be confirmed through Procedure 100-002 (Engine Diagrams) in Section E. For manufacturer information, visit the Cummins official website.
Who needs this Cummins 2357 troubleshooting manual
Workshop owners, diesel mechanics, and diagnostic technicians need this Cummins 2357 troubleshooting manual when an amber CHECK ENGINE light is linked to EGR valve movement failure. The procedure is useful when checking connector pins, monitoring EGR valve operation, reading active fault codes with INSITE™ electronic service tool, replacing the EGR valve assembly, or inspecting the diesel particulate filter for progressive aftertreatment damage.
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