This Cummins fault code 3753 diagnostic procedure explains the DPF active regeneration timeout condition and the checks used to clear it. The document identifies Fault Code 3753, SPN 3713 FMI 31, where the ECM requests active regeneration of the aftertreatment diesel particulate filter for an extended period but cannot complete it. It is written as a Cummins troubleshooting file for use with INSITE™ electronic service tool.
Official Cummins fault code 3753 document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250; also lists ISC8.3 and ISL9 CM2250, ISX11.9 CM2250, ISX15 CM2250, and IGX CM2250 in associated procedures |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; aftertreatment diesel particulate filter active regeneration |
| Publication no. | Not stated; associated bulletin numbers shown include 4022254, 4022257, 4022250, and 2883445 |
| Year/Revision | Last Modified: 11-Jun-2010 and 13-Jan-2011 |
| Pages | 6 |
| 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 1A – Check for active fault codes.
- Guided Step 2 – Check ECM calibration and clear fault codes.
- Guided Step 2A – Check if an ECM calibration update is available.
- Guided Step 2B – Disable the fault code.
Applicable truck models
This file applies to Cummins CM2250 engine control systems listed in the procedure, including ISB6.7 CM2250 as the stated group, with related coverage for ISC8.3 and ISL9 CM2250, ISX11.9 CM2250, ISX15 CM2250, and IGX CM2250 in the associated ECM calibration table. The aftertreatment diesel particulate filter is located in the exhaust system and is installed by the original equipment manufacturer, so vehicle-specific placement must be checked in the OEM service manual. For official manufacturer information, visit Cummins official website.
Who needs this Cummins fault code 3753 manual
Mechanics and workshop owners need this file when INSITE™ shows Fault Code 3753 with an aftertreatment diesel particulate filter active regeneration inhibited due to system timeout message. It helps confirm whether related active faults such as 1921, 1922, or 2639 are present, whether an ECM calibration update is required, and when no repair is necessary because the code is information only.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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