Cummins fault code 2376 is documented on this DiagTechPro library page for Cummins ISM CM871 (2007-09) engines, where it flags a Exhaust Gas Recirculation Temperature Sensor Circuit condition (PID P412, SPN 412, FMI 4/4, Amber lamp). This 5-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 2376 overview
Cummins defines this code as “EXHAUST GAS RECIRCULATION TEMPERATURE SENSOR CIRCUIT – VOLTAGE BELOW NORMAL, OR SHORTED TO LOW SOURCE” on the Exhaust Gas Recirculation Temperature Sensor Circuit. The exhaust gas recirculation (EGR) temperature sensor is a variable resistor sensor and is used to measure the temperature of the EGR gas flow after it exits the EGR cooler. The electronic control module (ECM) supplies 5 volts to the EGR temperature signal circuit. The ECM monitors the change in voltage caused by changes in the resistance of the sensor to determine the EGR flow temperature. The EGR temperature value is used by the ECM for the engine protection system and engine emissions control.
According to the shop talk notes, possible causes include:
- A signal shorted to ground in the harness.
- A signal shorted to return or ground in the sensor.
Official document details
| Brand | Cummins |
| Model coverage | Cummins ISM CM871 (2007-09); Cummins ISX CM871 (2007-09) |
| System / Group | Exhaust Gas Recirculation Temperature Sensor Circuit — ISM CM871 fault codes |
| Fault code | 2376 (SPN 412, FMI 4/4) |
| Source | TruckFaultCodes.com Cummins fault code reference (© 2017) |
| Pages | 5 |
| File size | 0.2 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 2376. 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 Cummins fault code 2376 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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