This Cummins coolant fault code document covers Fault Code 2448 for low engine coolant level detection on ISB, ISC, and ISL electronic control module applications. It explains the coolant level sensor circuit, fault conditions, warning lamp behavior, clearing condition, and the guided troubleshooting step shown in the source PDF.
Official Cummins coolant fault code document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2150 (2007-09); extract also references ISB, ISC, and ISL |
| System/Group | DTCs; coolant level sensor; electronic control module |
| Year/Revision | Last Modified: 20-Jul-2010 |
| Pages | 4 |
| 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 Fault Code 2448.
Applicable truck models
This PDF applies to Cummins ISB6.7 CM2150 (2007-09) diagnostic information for DTCs, and the extract also names ISB, ISC, and ISL electronic control module applications. The fault data identifies Fault Code 2448, SPN 111, FMI 1/17, with a Maintenance lamp and the reason “Coolant Level – Data Valid but Below Normal Operational Range – Least Severe Level.” The sensor is described as a switch in the radiator top tank or surge tank, and the ECM monitors signal voltage to determine whether coolant is below the sensor level. For official engine and service information, visit Cummins official website.
Who needs this Cummins coolant fault code manual
Workshop owners, diesel technicians, and fleet mechanics need this coolant fault code manual when INSITE™ electronic service tool shows active or inactive counts of Fault Code 2448. The document points the repair action toward adding coolant to the engine and refers users to the applicable Cooling System procedure in the ISB Series 6.7L Engines service manual or the ISC and ISL CM2150 service manual.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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