This Cummins 1885 NOx sensor document is a troubleshooting procedure for Fault Code 1885 on CM2250 engines. It explains the aftertreatment intake NOx sensor circuit, the fault reason, operating effects, clearing conditions, and guided diagnostic steps using INSITE™ electronic service tool.
Official Cummins 1885 NOx sensor 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 Intake NOx Sensor Circuit |
| Publication no. | Not stated; associated bulletin numbers include 4022254, 4022257, 4022250, 2883445, 4022256, and 4022255 |
| Year/Revision | Last Modified: 21-Dec-2010 and 19-Jan-2011 |
| Pages | 7 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Overview
- Circuit Description
- Component Location
- FAULT CODE 1885 — Aftertreatment Intake NOx Sensor Circuit – Voltage Below Normal, or Shorted to Low Source
- 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 ECM calibration and clear fault codes
Applicable truck models
This file applies to Cummins CM2250 engine families listed in the procedure: ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX15 CM2250, GX CM2250, ISX11.9 CM2250, QSL9 CM2250, and QSB6.7 CM2250. The extract identifies the sensor as mounted near the turbocharger turbine outlet and used to measure engine-out NOx emissions. For official engine and service information, visit Cummins official website.
Who needs this 1885 NOx sensor manual
Mechanics, fleet technicians, and workshop owners need this 1885 NOx sensor manual when an amber CHECK ENGINE lamp or MIL is linked to SPN 3216 FMI 4. The procedure helps confirm related active codes, check ECM calibration revision status, and decide whether the aftertreatment intake NOx sensor must be replaced under Procedure 019-463.
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