Cummins fault code 2274 is documented on this DiagTechPro library page for Cummins ISM CM871 (2007-09) engines, where it flags a Exhaust Gas Recirculation Valve Delta Pressure Sensor Circuit – Voltage Below Normal, Or Shorted To Low Source condition (PID P411, SPN 411, FMI 4/4, Amber lamp). This 6-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 2274 overview
Cummins defines this code as “EXHAUST GAS RECIRCULATION VALVE DELTA PRESSURE SENSOR CIRCUIT – VOLTAGE BELOW NORMAL, OR SHORTED TO LOW SOURCE” on the EGR Differentia; Pressure Sensor Circuit. The exhaust gas recirculation (EGR) differential pressure sensor has two ports that sense exhaust gas pressure. The sensor outputs a voltage which represents the pressure difference between the two ports. The electronic control module (ECM) uses this pressure to determine how much exhaust gas is flowing through the EGR connection tube to the intake manifold.
The document’s shop talk section highlights the following:
- A signal circuit open or shorted to ground in the engine harness or sensor.
- A supply wire open or shorted to ground.
Official document details
| Brand | Cummins |
| Model coverage | Cummins ISM CM871 (2007-09); Cummins ISX CM871 (2007-09) |
| System / Group | EGR Differentia; Pressure Sensor Circuit — ISM CM871 fault codes |
| Fault code | 2274 (SPN 411, FMI 4/4) |
| Source | TruckFaultCodes.com Cummins fault code reference (© 2017) |
| Pages | 6 |
| 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 2274 on the EGR Differentia; Pressure Sensor Circuit. Always confirm engine calibration and use a Cummins diagnostic tool such as INSITE to read live data before starting repairs. Full engine specifications and service information are published on the Cummins official website.
Who needs this Cummins fault code 2274 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 SPN 411 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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