This Cummins fault 1899 document is a troubleshooting PDF for EGR differential pressure diagnostics on CM2150 engines. It explains Fault Code 1899, SPN 411, FMI 1/18, where the ECM detects low EGR gas flow or an EGR differential pressure reading that is not valid for engine operating conditions. The file is intended for service diagnosis with INSITE™ electronic service tool and Cummins service procedures.
Official Cummins fault 1899 document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2150 (2007-09); extract also references ISB, ISC, and ISL CM2150 engines |
| System/Group | DTCs; Exhaust Gas Recirculation Valve Delta Pressure; EGR differential pressure sensor |
| Publication no. | Not shown in the extract |
| Year/Revision | Last Modified: 18-Aug-2010; troubleshooting section Last Modified: 20-Jul-2010 |
| Pages | 12 |
| 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 2 – Check the EGR differential pressure sensor flow ports for debris or plugging.
- Guided Step 3 – Check the EGR delta pressure sensor and circuit.
- Guided Step 4 – Check the ECM and engine harness.
- Guided Step 5 – Clear the fault code.
Applicable truck models
This file applies to Cummins ISB6.7 CM2150 engines in the 2007-09 group and references ISB, ISC, and ISL CM2150 service procedures. It covers the EGR differential pressure sensor near the air intake, the EGR crossover tube pressure drop, ECM 5 volt supply and sensor return circuits, and the diagnostic logic that disables EGR valve actuation when the amber CHECK ENGINE light is set. See the manufacturer’s official information at Cummins.
Who needs this Cummins fault 1899 manual
Workshop owners, diesel mechanics, and fleet technicians need this file when diagnosing low EGR gas flow, plugged EGR differential pressure sensor flow ports, damaged connector pins, circuit response problems, or ECM and engine harness faults. The procedure uses INSITE™ electronic service tool to check related codes such as 1895, 1896, 2357, 1866, 2273, and 2274 before clearing inactive fault codes.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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