This Cummins 1883 troubleshooting document is a fault-code diagnostic procedure for the aftertreatment diesel particulate filter differential pressure sensor. It explains Fault Code 1883, SPN 3251 FMI 2/2, where the sensor data is erratic, intermittent, or incorrect at key-on or during engine operation. The PDF is written for service diagnosis using Cummins INSITE™ and standard circuit checks.
Official Cummins 1883 troubleshooting document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX15 CM2250, GX CM2250, ISX11.9 CM2250, QSL9 CM2250, QSB6.7 CM2250 |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; aftertreatment diesel particulate filter differential pressure sensor |
| Publication no. | 4022254 for ISB6.7 CM2250; associated bulletins also list 4022257, 4022250, 2883445, 4022256, and 4022255 |
| Year/Revision | Year unknown; last modified 11-Jun-2010 and 19-Jan-2011 in the extracted pages |
| Pages | 17 |
| 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
- Guided Step 1 – Check for sensor circuit fault codes
- Guided Step 2 – Check the aftertreatment diesel particulate filter differential pressure sensor tubes
- Guided Step 3 – Check the aftertreatment diesel particulate filter differential pressure sensor and circuit
- Guided Step 4 – Check the ECM and OEM harness
- Guided Step 5 – Check ECM calibration and clear fault codes
Applicable truck models
The procedure applies to Cummins CM2250 engine platforms listed in the document, including ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX15 CM2250, GX CM2250, ISX11.9 CM2250, QSL9 CM2250, and QSB6.7 CM2250. The component location is OEM-dependent because the aftertreatment diesel particulate filter differential pressure sensor is mounted on the diesel particulate filter, so the OEM service manual may be required for exact access and routing. For manufacturer information, visit Cummins official website.
Who needs this Cummins 1883 troubleshooting manual
This manual is useful for diesel mechanics, fleet technicians, and workshop owners diagnosing an amber CHECK ENGINE lamp, MIL, disabled regeneration, disabled diesel exhaust fluid injection, closed EGR valve, or torque reduction linked to Fault Code 1883. It supports inspection of sensor tubes, connector pins, signal and return wiring, OEM harness resistance, pin-to-ground shorts, pin-to-pin shorts, ECM connector condition, calibration revision, and fault clearing with INSITE™.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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