Cummins fault code 2448 is documented on this DiagTechPro library page for Cummins ISM CM871 (2007-09) engines, where it flags a Coolant Level condition (PID SPN, SPN 111, FMI 1/17, Maintenance lamp). This 2-page PDF reproduces the manufacturer description, shop talk, component location and step-by-step troubleshooting so technicians can confirm and clear the code.
Cummins fault code 2448 overview
Cummins defines this code as “COOLANT LEVEL – DATA VALID BUT BELOW NORMAL OPERATIONAL RANGE – LEAST SEVERE LEVEL” on the Electronic Control Module. The coolant level sensor is a switch and is used to measure the level of the engine coolant in the radiator top tank. The coolant level sensor is immersed in the coolant and returns a different signal voltage when immersed in coolant versus being out of coolant. The electronic control module (ECM) monitors the change in the signal voltage to determine the level of the engine coolant.
Official document details
| Brand | Cummins |
| Model coverage | Cummins ISM CM871 (2007-09); Cummins ISX CM871 (2007-09) |
| System / Group | Electronic Control Module — ISM CM871 fault codes |
| Fault code | 2448 (SPN 111, FMI 1/17) |
| Source | TruckFaultCodes.com Cummins fault code reference (© 2017) |
| Pages | 2 |
| File size | 0.1 MB |
| Format | |
| Language | English |
Document table of contents
- Fault code identification (PID, SPN, FMI, lamp)
- Description
- Shop Talk
- Component Location
- Troubleshooting Steps
Applicable truck models and engines
This document applies to Cummins ISM CM871 (2007-09); Cummins ISX CM871 (2007-09) equipped diesel engines that log Fault Code 2448. Always confirm engine calibration and use a Cummins diagnostic tool such as INSITE to read live data before starting repairs. Full specifications are published on the Cummins official website.
Who needs this fault code 2448 manual
Heavy-duty truck technicians, fleet workshops and owner-operators diagnosing an electronic control module warning on ISM CM871 engines will use this sheet to verify the fault before parts are replaced.
The full PDF is available in the DiagTechPro manuals library; a free account is required to download.
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