This document is a Cummins fault 2448 troubleshooting manual for the coolant level sensor circuit on CM2250 engine families. It explains why Fault Code 2448 becomes active, what the ECM monitors, and how INSITE™ electronic service tool is used to confirm, clear, or escalate the fault. The file is a 6-page PDF named Code 2448.pdf.
Official Cummins fault 2448 document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250, plus associated CM2250 and CM2150 engine models listed in the procedure table |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; Coolant Level Sensor |
| Publication no. | 4022254 for ISB6.7 CM2250 in the associated procedure table; other bulletin numbers are listed for other engine models |
| Year/Revision | Last Modified: 11-Jun-2010; troubleshooting section Last Modified: 18-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
- FAULT CODE 2448
- 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 Fault Code 2448.
- 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
The extract covers the coolant level sensor diagnostic for ISX11.9 CM2250, ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, and ISX15 CM2250 in the fault summary. The associated procedures table also lists ISB4.5, ISB6.7, ISD4.5, ISD6.7 CM2150 SN, ISL8.9 CM2150 SN, ISM11 CM876 SN, ISZ13 CM2150, GX CM2250, QSL9 CM2250, and QSB6.7 CM2250. For OEM location details, the document directs the technician to the OEM service manual because the coolant level sensor is typically in the radiator top tank or surge tank. Manufacturer information is available at Cummins official website.
Who needs this Cummins fault 2448 manual
This manual is for diesel mechanics, fleet technicians, and workshop owners diagnosing a low engine coolant level indication with SPN 111, FMI 17, PID P2560, and an amber maintenance or check-engine lamp event. It is useful when coolant level must be checked, the cooling system procedure 008-018 must be referenced, or an ECM calibration revision must be compared through INSITE™.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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