This EGR fault 1896 DTCs document is a troubleshooting PDF for an EGR Valve Controller – Out of Calibration fault on CM2250 engines. It explains the circuit description, fault effects, clearing conditions, associated procedures, and guided diagnostic steps for Code 1896.
Official EGR fault 1896 DTCs document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX11.9 CM2250, ISX15 CM2250, QSL9 CM2250, QSB6.7 CM2250 |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; EGR Valve Circuit |
| Publication no. | Not stated in the file extract; associated bulletin numbers include 4022254, 4022257, 4022250, 2883445, 4022256, and 4022255 |
| Year/Revision | Year unknown; last modified 11-Jun-2010 and 20-Jul-2010 |
| Pages | 8 |
| 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 valve operation
- Guided Step 3 – Check ECM calibration and clear fault codes
Applicable truck models
This file applies to Cummins CM2250 engine families listed in the procedure table: ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX11.9 CM2250, ISX15 CM2250, QSL9 CM2250, and QSB6.7 CM2250. The EGR valve location can vary by engine application, and the procedure refers users to engine-specific associated procedures for the EGR valve, ECM Calibration Code, and Aftertreatment Testing. For official manufacturer information, visit Cummins official website.
Who needs this EGR fault 1896 DTCs manual
This manual is intended for diesel mechanics, fleet technicians, and workshop owners diagnosing an active Fault Code 1896, PID S146, SPN 2791, FMI 13, with an amber CHECK ENGINE lamp or MIL. It is useful when INSITE™ electronic service tool shows the EGR Valve Controller – Out of Calibration condition after initial key ON.
The procedure describes how the ECM controls the EGR valve motor through motor A, B, and C wires, how position sensors report valve position, and why the diagnostic sets when the valve is detected open beyond a calibratible value. When active, the EGR valve actuation is disabled and the EGR valve stops responding to commands.
The guided checks cover reading active fault codes, cycling the keyswitch, identifying a stuck open EGR valve, replacing the EGR valve assembly under Procedure 011-022 when required, checking ECM calibration revision history under Procedure 019-032, and clearing the fault after the required operating conditions. The document also notes that the aftertreatment system must be inspected after repair and references the Snap-Acceleration Test to check for a malfunctioning diesel particulate filter under Procedure 014-013.
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